Coupled variations of fundamental couplings and primordial nucleosynthesis
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The effect of variations of the fundamental nuclear parameters on big-bang nucleosynthesis are modeled and discussed in detail taking into account the interrelations between the fundamental parameters arising in unified theories. Considering only $^{4}\mathrm{He}$, strong constraints on the variation of the neutron lifetime, neutron-proton mass difference are set. These constraints are then translated into constraints on the time variation of the Yukawa couplings and the fine structure constant. Furthermore, we show that a variation of the deuterium binding energy is able to reconcile the $^{7}\mathrm{Li}$ abundance deduced from the WMAP analysis with its spectroscopically determined value while maintaining concordance with D and $^{4}\mathrm{He}$. The analysis is strongly based on the potential model of Flambaum and Shuryak that relates the binding energy of the deuteron with the nucleon and $\ensuremath{\sigma}$ and $\ensuremath{\omega}$ mesons masses; however, we show that an alternative approach that consists of a pion mass dependence necessarily leads to equivalent conclusions.
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The variations of mu and alpha_EM are correlated, still in a very model-dependent way, typically d mu/mu = -0.8 R d alpha_EM/alpha_EM + 0.6(S+1) dh/h, with S approximately 160.
“This would also imply that the variations of l and a EM are correlated, still in a very model-dependent way, typically one can conclude (Coc et al. 2007) that dl l ¼ À0:8R da EM a EM þ 0:6ðS þ 1Þ dh h ;”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Coc et al. 2007
The BBN parameters behave as DQ_np/Q_np = [0.1 + 0.7S - 0.6R] Da_EM/a_EM, Ds_n/s_n = [-0.2 - 2.0S + 3.8R] Da_EM/a_EM, and DB_D/B_D = [-6.5(1+S) + 18R] Da_EM/a_EM.
“DQ np =Q np ¼½0:1 þ 0:7S À 0:6RDa EM =a EM ;ð122Þ Ds n =s n ¼½À0:2 À 2:0S þ 3:8RDa EM =a EM ;ð123Þ DB D =B D ¼½À6:5ð1 þ SÞ þ 18RDa EM =a EM ;ð124Þ”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Coc et al. 2007
Typical values in unification scenarios are (R,S) = (26,160) and (109.4,0) in dilaton type models.
“Their typical value in unification scenarios are thought to be ðR; SÞ ¼ ð26; 160Þ (Langacker et al. 2002;Coc et al. 2007) and (109.4,0) in dilaton type models (Nakashima et al. 2010).”
From Fundamental constants: from measurement to the universe, a window on gravitation and cosmology (2025) · cites this paper as Coc et al. 2007
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“In the literature, many studies have been devoted to this lithium problem (Angulo et al. 2005; Coc et al. 2007; Cyburt et al. 2008; Chakraborty et al. 2011, and references therein).”
BackgroundSelf-citationStandard big bang nucleosynthesis and primordial CNO abundances after Planck
Coc, A., Uzan, J., & Vangioni–Flam, E. (2014) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2014/10/050 · Cited by 160 · see citing works
“GF (Fermi constant), me (electron mass) and Qnp (neutron-pronton mass difference), essential in our investigations concerning variations of constants in BBN [14, 18].”
Self-citationBarnaby, N., Namba, R., & Peloso, M. (2012) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.85.123523 · Cited by 159 · see citing works
“Secondly, one may try to arrange for a time evolution of I during reheating in such a way that ephysical is brought from a very tiny value at the end of inflation (so to avoid the strong coupling problem during inflation) to the present value before the onset of Big-Bang Nucleosynthesis (given that only a fractional d…”
BackgroundThe status of varying constants: a review of the physics, searches and implications
Martins, C. J. A. P. (2017) · Reports on Progress in Physics · doi:10.1088/1361-6633/aa860e · Cited by 179 · see citing works
Probing physics beyond the standard model: limits from BBN and the CMB independently and combined
Yeh, T., Shelton, J., Olive, K. A., & Fields, B. D. (2022) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2022/10/046 · Cited by 136 · see citing works
Self-citation<i>Planck</i>intermediate results: XXIV. Constraints on variations in fundamental constants⋆
Planck Collaboration:, Ade, P. A. R., Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Battaner, E., et al. (2015) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201424496 · Cited by 125 · see citing works
“…Fundamental constants 2013), population III stars (Livio et al. 1989; Ekström et al. 2010; Coc et al. 2009), cosmic microwave background (CMB) anisotropies (see below for details), and big bang nucleosynthesis at z ∼ 108 (Bergström et al. 1999; Müller et al. 2004; Coc et al. 2007, 2012).”
BackgroundSelf-citationA new tension in the cosmological model from primordial deuterium?
Pitrou, C., Coc, A., Uzan, J., & Vangioni–Flam, E. (2021) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stab135 · Cited by 103 · see citing works
Self-citationDependence of nuclear binding on hadronic mass variation
Flambaum, V. V., & Wiringa, R. B. (2007) · Physical Review C · doi:10.1103/physrevc.76.054002 · Cited by 90 · see citing works
Varying the light quark mass: Impact on the nuclear force and big bang nucleosynthesis
Berengut, J. C., Epelbaum, E., Flambaum, V. V., Hanhart, C., Meißner, U.-G., Nebreda, J., & Peláez, J. R. (2013) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.87.085018 · Cited by 85 · see citing works
Primordial nucleosynthesis as a probe of fundamental physics parameters
Dent, T., Stern, S., & WETTERICH, C. (2007) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.76.063513 · Cited by 83 · see citing works
Lithium abundances of halo dwarfs based on excitation temperature
Hosford, A., Ryan, S. G., Pérez, A. E. G., Norris, J. E., & Olive, K. A. (2008) · Astronomy and Astrophysics · doi:10.1051/0004-6361:200810240 · Cited by 80 · see citing works
Self-citationThe primordial deuterium abundance: subDLA system at z abs = 2.437 towards the QSO J 1444+2919
Balashev, S. A., Zavarygin, E. O., Ivanchik, A. V., Telikova, K., & Varshalovich, D. A. (2016) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stw356 · Cited by 75 · see citing works
“…& Moroi 2005; Pospelov & Pradler 2010; Zavarygin & Ivanchik 2015) and the Standard Model of physics (e.g. additional neutrino species, Steigman 2012, or variation of fundamental constants, Ivanchik, E-mail: s.balashev@gmail.com Orlov & Varshalovich 2001; Coc et al. 2007; Stadnik & Flambaum 2015).”
BackgroundResonant destruction as a possible solution to the cosmological lithium problem
Chakraborty, N., Fields, B. D., & Olive, K. A. (2011) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.83.063006 · Cited by 74 · see citing works
Self-citationBounds on the fine structure constantvariability from Fe ii absorption lines in QSO spectra
Molaro, P. P., Reimers, D., Agafonova, I. I., & Levshakov, S. A. (2008) · The European Physical Journal Special Topics · doi:10.1140/epjst/e2008-00818-4 · Cited by 73 · see citing works
“…probed at very high redshift (z ∼ 1010) through the dependence of primordial light element abundances on fundamental parameters (e.g., Dent et al. 2007, Coc et al 2007) and at lower redshifts (z <∼ 6) through the measurements of the relative radial velocity shifts between different metal…”
BackgroundNuclear astrophysics: the unfinished quest for the origin of the elements
José, J., & Iliadis, C. (2011) · Reports on Progress in Physics · doi:10.1088/0034-4885/74/9/096901 · Cited by 73 · see citing works
Big-Bang nucleosynthesis with updated nuclear data
Coc, A., & Vangioni–Flam, E. (2010) · Journal of Physics Conference Series · doi:10.1088/1742-6596/202/1/012001 · Cited by 67 · see citing works
Self-citationQuark mass variation constraints from Big Bang nucleosynthesis
Bedaque, P. F., Luu, T., & Platter, L. (2011) · Physical Review C · doi:10.1103/physrevc.83.045803 · Cited by 63 · see citing works
“A number of authors have previously considered the effect of a changing quark masses in the BBN predicted abundances [3][4] [5] [6][7][8][9] [10][11][12][13][14] [15][16][17].”
BackgroundThe degree of fine-tuning in our universe — and others
Adams, F. C. (2019) · Physics Reports · doi:10.1016/j.physrep.2019.02.001 · Cited by 62 · see citing works
“Although stellar evolution is modified in universes with stable 8Be, the epoch of Big Bang Nucleosynthesis will continue to produce light nuclei with the usual abundances [149, 150, 468].”
BackgroundHigher D or Li: probes of physics beyond the standard model
Olive, K. A., Petitjean, P., Vangioni–Flam, E., & Silk, J. I. (2012) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2012.21703.x · Cited by 55 · see citing works
“…price of an increased D/H abundance: photon cooling (Erken et al. 2012; Kusakabe et al. 2012), variable fundamental constants (Dmitriev et al. 2004; Coc et al. 2007; Berengut et al. 2010) and particle decays during or after BBN (Jedamzik 2004; Kawasaki et al. 2005; Feng et al. 2004; Ellis et al.…”
BackgroundSelf-citationVariation of fundamental constants and the role of A=5 and A=8 nuclei on primordial nucleosynthesis
Coc, A., Descouvemont, P., Olive, K. A., Uzan, J., & Vangioni–Flam, E. (2012) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.86.043529 · Cited by 51 · see citing works
Self-citationPrimordial nucleosynthesis with varying fundamental constants
Clara, M. T., & Martins, C. J. A. P. (2020) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201937211 · Cited by 1 · see citing works
“We follow Coc et al. (2007) in considering a broad class of grand unification models (in which unification is assumed to occur at some unspecified high energy), where the weak scale is determined by dimensional transmutation, and in further assuming that the relative variation of all the Yukawa…”
InfluentialNonuniversal scalar-tensor theories and big bang nucleosynthesis
Coc, A., Olive, K. A., Uzan, J., & Vangioni–Flam, E. (2009) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.79.103512 · Cited by 48 · see citing works
Self-citationAxion Dark Matter and Cosmological Parameters
Erken, O., Sikivie, P., Tam, H., & Yang, Q. (2012) · Physical Review Letters · doi:10.1103/physrevlett.108.061304 · Cited by 47 · see citing works
RESONANT ENHANCEMENT OF NUCLEAR REACTIONS AS A POSSIBLE SOLUTION TO THE COSMOLOGICAL LITHIUM PROBLEM
CYBURT, R. H., & POSPELOV, M. (2012) · International Journal of Modern Physics E · doi:10.1142/s0218301312500048 · Cited by 47 · see citing works
Relic neutrino freeze-out: Dependence on natural constants
Birrell, J., Yang, C. T., & Johann Rafelski, A. (2014) · Nuclear Physics B · doi:10.1016/j.nuclphysb.2014.11.020 · Cited by 47 · see citing works
“Variation of natural constants that impact the nuclear reaction rates or exansion of the Universe during the BBN era have been investigated, including in particular the time dependence of the neutron to proton mass ratio [28, 29, 30], the fine structure constant and deuteron binding energy [30], or Newton’s constant (…”
BackgroundEffects of the variation of fundamental constants on Population III stellar evolution
Ekström, S., Coc, A., Descouvemont, P., Meynet, G., Olive, K., Uzan, J., & Vangioni, E. (2010) · Astronomy and Astrophysics · doi:10.1051/0004-6361/200913684 · Cited by 39 · see citing works
“…and from big bang nucleosynthesis (BBN) (z ∼ 1010) (e.g. Kolb et al. 1986; Campbell & Olive 1995; Bergström et al. 1999; Nollett & Lopez 2002; Ichikawa & Kawasaki 2002; Flambaum & Shuryak 2002; Müller et al. 2004; Ichikawa & Kawasaki 2004; Landau et al. 2006; Coc et al. 2007; Dent et al. 2007).”
BackgroundMethodInfluentialSelf-citationOlive, K. A., Peloso, M., & Uzan, J.-P. (2011) · Physical Review D · doi:10.1103/physrevd.83.043509 · Cited by 44 · see citing works
Self-citationKawabata, T., Fujikawa, Y., Furuno, T., Goto, T., Hashimoto, T., Ichikawa, M., Itoh, M., Iwasa, N., Kanada-En’yo, Y., Koshikawa, A. S., et al. (2017) · Physical Review Letters · doi:10.1103/physrevlett.118.052701 · Cited by 43 · see citing works
Electroweak baryogenesis from temperature-varying couplings
Ellis, S., Ipek, S., & White, G. (2019) · Journal of High Energy Physics · doi:10.1007/jhep08(2019)002 · Cited by 49 · see citing works
“There are also constraints on the variation of αEM from Big Bang Nucleosynthesis (BBN), which can be of similar strength if the variation is coupled to variations of other fundamental parameters [50].”
BackgroundFung, L. W. H., Li, L., Liu, T., Luu, H. N., Qiu, Y.-C., & Tye, S.-H. H. (2021) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2021/08/057 · Cited by 41 · see citing works
Early universe constraints on time variation of fundamental constants
Landau, S. J., MOSQUERA, M. E., Scóccola, C. G., & Vucetich, H. (2008) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.78.083527 · Cited by 38 · see citing works
Abdalla, E., Abellán, G. F., Aboubrahim, A., Agnello, A., Akarsu, Ö., Akrami, Y., Alestas, G., Aloni, D., Amendola, L., Anchordoqui, L. A., et al. (2022) · Journal of High Energy Astrophysics · doi:10.1016/j.jheap.2022.04.002 · Cited by 37 · see citing works
The minimally extended Varying Speed of Light (meVSL)
Lee, S. (2020) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2021/08/054 · Cited by 33 · see citing works
Implications of the non-observation of 6 Li in halo stars for the primordial 7 Li problem
Fields, B. D., & Olive, K. A. (2022) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2022/10/078 · Cited by 34 · see citing works
Self-citationStability of fundamental couplings: A global analysis
Martins, C. J. A. P., & Pinho, A. M. M. (2017) · Physical Review D · doi:10.1103/physrevd.95.023008 · Cited by 32 · see citing works
Gyromagnetic factors and atomic clock constraints on the variation of fundamental constants
Luo, F., Olive, K. A., & Uzan, J.-P. (2011) · Physical Review D · doi:10.1103/physrevd.84.096004 · Cited by 31 · see citing works
Self-citationFundamental constants: from measurement to the universe, a window on gravitation and cosmology
Uzan, J.-P. (2025) · Living Reviews in Relativity · doi:10.1007/s41114-025-00059-y · Cited by 36 · see citing works
Self-citationNeutron injection during primordial nucleosynthesis alleviates the primordial Li7 problem
Vásquez, D. A., Belikov, A., Coc, A., Silk, J. I., & Vangioni–Flam, E. (2012) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.86.063501 · Cited by 30 · see citing works
Self-citationMartins, C. J. A. P. (2014) · General Relativity and Gravitation · doi:10.1007/s10714-014-1843-7 · Cited by 30 · see citing works
BBN constraints on universally-coupled ultralight scalar dark matter
Sibiryakov, S. M., Sørensen, P., & Yu, T. (2020) · Journal of High Energy Physics · doi:10.1007/jhep12(2020)075 · Cited by 30 · see citing works
“Following [17], we take ∆BD BD ' 18 ∆ΛQCD ΛQCD − 17q mq ' α(φ) , (A.”
BackgroundMethodInfluentialConsistency tests of the stability of fundamental couplings and unification scenarios
Ferreira, M. C., Frigola, O., Martins, C. J. A. P., Monteiro, A. M. R. V. L., & Solà, J. (2014) · Physical Review D · doi:10.1103/physrevd.89.083011 · Cited by 29 · see citing works
Ultracold neutron accumulation in a superfluid-helium converter with magnetic multipole reflector
Zimmer, O., & Golub, R. (2015) · Physical Review C · doi:10.1103/physrevc.92.015501 · Cited by 29 · see citing works
Primordial nucleosynthesis with varying fundamental constants
Deal, M., & Martins, C. J. A. P. (2021) · Astronomy and Astrophysics · doi:10.1051/0004-6361/202140725 · Cited by 29 · see citing works
Stadnik, Y. V. (2017) · Springer theses · doi:10.1007/978-3-319-63417-3 · Cited by 29 · see citing works
Time variation of fundamental couplings and dynamical dark energy
Dent, T., Stern, S., & WETTERICH, C. (2009) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2009/01/038 · Cited by 29 · see citing works
Time-dependent quark masses and big bang nucleosynthesis revisited
Cheoun, M.-K., Kajino, T., Kusakabe, M., & Mathews, G. J. (2011) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.84.043001 · Cited by 28 · see citing works
Coc, A. (2016) · Journal of Physics Conference Series · doi:10.1088/1742-6596/665/1/012001 · Cited by 27 · see citing works
Self-citationElectroweak baryogenesis from temperature-varying couplings
Ellis, S. A. R. (2023) · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · doi:10.1007/jhep08%282019%29002 · Cited by 27 · see citing works
Unifying cosmological and recent time variations of fundamental couplings
Dent, T., Stern, S., & WETTERICH, C. (2008) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.78.103518 · Cited by 26 · see citing works
Lee, D., Meißner, U.-G., Olive, K. A., Shifman, M., & Vonk, T. (2020) · Physical Review Research · doi:10.1103/physrevresearch.2.033392 · Cited by 29 · see citing works
“Furthermore, if the variation of quark masses is due to an overall variation in the Yukawa couplings, it will feed into variations of a host of fundamental observables including the gauge couplings, and affect Big Bang Nucleosynthesis (BBN) [26–30], the lifetime of long-lived nuclei [31], and atomic clocks [32].”
BackgroundSelf-citationConstraints on ultralight scalar dark matter with quadratic couplings
Bouley, T., Sørensen, P., & Yu, T. (2023) · Journal of High Energy Physics · doi:10.1007/jhep03(2023)104 · Cited by 25 · see citing works
“The shift in mnp and BD can be estimated using a combination of lattice and analytic methods as discussed in [44]; we summarize the relevant parts below.”
BackgroundMethodInfluentialMirror matter can alleviate the cosmological lithium problem
Coc, A., Uzan, J., & Vangioni–Flam, E. (2013) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.87.123530 · Cited by 25 · see citing works
Self-citationUltracold neutrons extracted from a superfluid-helium converter coated with fluorinated grease
Zimmer, O., Schmidt-Wellenburg, P., Fertl, M., Wirth, H.-F., Aßmann, M., Klenke, J., & van den Brandt, B. (2010) · The European Physical Journal C · doi:10.1140/epjc/s10052-010-1327-1 · Cited by 25 · see citing works
The mass effect — variations of the electron mass and their impact on cosmology
Schöneberg, N., & Vacher, L. (2024) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2025/03/004 · Cited by 21 · see citing works
“…the final level of constraint as As an illustration, considering the two cases studied in [124], GUTs models with S ∼ 160 as the ones studied in [102] would still leave a lot of room for electron mass variations to solve the Hubble tension, while strongly coupled string dilaton models discussed…”
Fundamental Constants and Tests of General Relativity—Theoretical and Cosmological Considerations
Uzan, J. (2009) · Space Science Reviews · doi:10.1007/s11214-009-9503-z · Cited by 23 · see citing works
Self-citationAvelino, P. P. (2008) · Physical Review D · doi:10.1103/physrevd.78.043516 · Cited by 22 · see citing works
Probing unification scenarios with atomic clocks
Ferreira, M., Julião, M., Martins, C. J. A. P., & Monteiro, A. M. R. V. L. (2012) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.86.125025 · Cited by 22 · see citing works
Proposed neutron lifetime measurement using a hybrid magnetic trap for ultra-cold neutrons
Leung, K. K. H., & Zimmer, O. (2009) · Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · doi:10.1016/j.nima.2009.07.087 · Cited by 21 · see citing works
Quadratic coupling of the axion to photons
Beadle, C., Ellis, S. A. R., Quevillon, J., & Vuong, P. N. H. (2024) · Physical review. D/Physical review. D. · doi:10.1103/physrevd.110.035019 · Cited by 20 · see citing works
“— Variations of the fine-structure constant would impact the predictions of standard BBN, as has been discussed previously [10, 11, 30, 77].”
BackgroundSolution to Big-Bang nucleosynthesis in hybrid axion dark matter model
Kusakabe, M., Balantekin, A. B., Kajino, T., & Pehlivan, Y. (2012) · Physics Letters B · doi:10.1016/j.physletb.2012.11.007 · Cited by 20 · see citing works
Non-Gaussian error distribution of 7Li abundance measurements
Crandall, S., Houston, S., & Ratra, B. (2015) · Modern Physics Letters A · doi:10.1142/s0217732315501230 · Cited by 19 · see citing works
“See, for instance Jedamzik et al. (2006), Coc et al. (2007), Chakraborty et al. (2011), Fields (2011), Erkem et al. (2012), Cyburt et al. (2012), Ouyed (2013), and Kusakabe & Kawasaki (2014).”
BackgroundTime variation of the fine structure constant in the early universe and the Bekenstein model
MOSQUERA, M. E., Scóccola, C. G., Landau, S. J., & Vucetich, H. (2007) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20078605 · Cited by 19 · see citing works
“Coc et al. (2007) set constraints on the variation in the neutron lifetime and neutronproton mass difference using the primordial abundance of 4He.”
BackgroundRecent results in nuclear astrophysics
Coc, A., Hammache, F., & Kiener, J. (2015) · The European Physical Journal A · doi:10.1140/epja/i2015-15034-y · Cited by 18 · see citing works
Self-citationHosford, A., Pérez, A. E. G., Collet, R., Ryan, S. G., Norris, J. E., & Olive, K. A. (2010) · University of Hertfordshire Research Archive (University of Hertfordshire) · doi:10.1051/0004-6361/200913693 · Cited by 18 · see citing works
Self-citationThe stability of fundamental constants
Uzan, J. (2015) · Comptes Rendus Physique · doi:10.1016/j.crhy.2015.03.007 · Cited by 17 · see citing works
Self-citationDark energy, gravitation and the Copernican principle
Uzan, J. (2010) · Cambridge University Press eBooks · doi:10.1017/cbo9781139193627.002 · Cited by 17 · see citing works
Self-citationMagano, D., Boas, J. V., & Martins, C. J. A. P. (2017) · Physical review. D/Physical review. D. · doi:10.1103/physrevd.96.083012 · Cited by 17 · see citing works
Constraining cosmologies with fundamental constants – I. Quintessence and K-essence
Thompson, R. I., Martins, C. J. A. P., & Vielzeuf, P. (2012) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/sts187 · Cited by 16 · see citing works
“The R parameter can have a different value, which points to a unification scenario that differs from the ones currently considered to be best motivated (Avelino et al. 2006; Coc et al. 2007).”
BackgroundMOSQUERA, M. E., & Civitarese, O. (2013) · Astronomy and Astrophysics · doi:10.1051/0004-6361/201220615 · Cited by 16 · see citing works
“Cyburt et al. (2005) have studied the variation of the fine structure constant and the variation of Newton’s GN. Coc et al. (2007) have set constraints on the variation in the neutron lifetime and the neutronproton mass difference.”
BackgroundLe, T. D. (2021) · Chinese Journal of Physics · doi:10.1016/j.cjph.2021.07.004 · Cited by 10 · see citing works
Competing bounds on the present-day time variation of fundamental constants
Dent, T., Stern, S., & WETTERICH, C. (2009) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.79.083533 · Cited by 16 · see citing works
Le, T. D. (2019) · Chinese Journal of Physics · doi:10.1016/j.cjph.2019.10.007 · Cited by 16 · see citing works
The electromagnetic fine-structure constant in primordial nucleosynthesis revisited
Meißner, U.-G., Metsch, B. C., & Meyer, H. (2023) · The European Physical Journal A · doi:10.1140/epja/s10050-023-01131-3 · Cited by 15 · see citing works
Fundamental constant observational bounds on the variability of the QCD scale
Thompson, R. I. (2017) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stx433 · Cited by 15 · see citing works
“For the well known model of Coc et al. (2007) where R = 36 and a = 0.76 the limit on the fractional change of the QCD scale and the sum of the fractional changes of the Higgs VEV and the Yukawa couplings is 6 5 × 10−5 at the 1σ level for the last half of the age of the universe.”
BackgroundMethodInfluentialConsistency of local and astrophysical tests of the stability of fundamental constants
Martins, C. J. A. P., & Vila Miñana, M. (2019) · Physics of the Dark Universe · doi:10.1016/j.dark.2019.100301 · Cited by 15 · see citing works
“Finally, in order to relate the variations of the three couplings in specific models we will rely on the phenomenological formalism developed in [17, 18], for which we will consider three specific examples.”
BackgroundMethodInfluentialThomson scattering: one rate to rule them all
Greene, K., & Cyr-Racine, F. (2023) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2023/10/065 · Cited by 13 · see citing works
Ratio-preserving approach to cosmological concordance
Greene, K., & Cyr-Racine, F. (2024) · Physical Review D · doi:10.1103/physrevd.110.043524 · Cited by 5 · see citing works
Precision Big Bang Nucleosynthesis with the New Code PRIMAT
Pitrou, C., Coc, A., Uzan, J., & Vangioni–Flam, E. (2020) · International Symposium on Origin of Matter and Evolution of Galaxies (OMEG) · doi:10.7566/jpscp.31.011034 · Cited by 14 · see citing works
Self-citationLe, T. D. (2021) · Journal of High Energy Astrophysics · doi:10.1016/j.jheap.2021.01.001 · Cited by 10 · see citing works
Varying physical constants and the lithium problem
Gupta, R. P. (2021) · Astroparticle Physics · doi:10.1016/j.astropartphys.2021.102578 · Cited by 14 · see citing works
Reappraisal of the limit on the variation in α implied by the Oklo natural fission reactors
Davis, E. D. D., & Hamdan, L. (2015) · Physical Review C · doi:10.1103/physrevc.92.014319 · Cited by 14 · see citing works
Hubble constant in the axi-Higgs universe
Fung, L. W. H., Li, L., Liu, T., Luu, H. N., Qiu, Y.-C., & Tye, S.-H. H. (2023) · Physical Review Research · doi:10.1103/physrevresearch.5.l022059 · Cited by 19 · see citing works
Possible observation of the dineutron in the 159 Tb (n, 2 n) 158g Tb nuclear reaction
Каденко, І. (2016) · Europhysics Letters (EPL) · doi:10.1209/0295-5075/114/42001 · Cited by 13 · see citing works
Constraints on the electron-to-proton mass ratio variation at the epoch of reionization
Levshakov, S. A., Kozlov, M. G., & Agafonova, I. I. (2020) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/staa2635 · Cited by 13 · see citing works
“We note that the fractional changes in me of ∼ 1-2% do not contradict the results of primordial nucleosynthesis (z ∼ 108) which show that abundances of the light nuclei are not sensitive to the changes in me within ±10% (e.g., Coc et al. 2007; Uzan 2011).”
ResultStellar test of the physics of unification
Vieira, J. P. P., Martins, C. J. A. P., & Monteiro, M. J. P. F. G. (2012) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.86.043003 · Cited by 12 · see citing works
Further consistency tests of the stability of fundamental couplings
Ferreira, M., & Martins, C. J. A. P. (2015) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.91.124032 · Cited by 12 · see citing works
The Quantum Gravity Connection between Inflation and Quintessence
Wetterich, C. (2022) · Galaxies · doi:10.3390/galaxies10020050 · Cited by 13 · see citing works
King, J. A. (2012) · arXiv (Cornell University) · doi:10.26190/unsworks/23723 · Cited by 12 · see citing works
Variation of the fine structure constant in light of recent helium abundance measurement
Seto, O., Takahashi, T., & Toda, Y. (2023) · Physical Review D · doi:10.1103/physrevd.108.023525 · Cited by 8 · see citing works
Quantum Gravity and Scale Symmetry in Cosmology
WETTERICH, C. (2023) · Springer eBooks · doi:10.1007/978-981-19-3079-9_26-1 · Cited by 11 · see citing works
- Authors
- Coc, A., Nunes, N. J., Olive, K. A., Uzan, J.-P., & Vangioni, E.
- Affiliations
- Centre National de la Recherche Scientifique (FR)
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 2007-07-20
- Volume
- 76
- Issue
- 2
- Pages
- 023511
- ISSN
- 0556-2821 (ISSN-L)
- 1550-7998
- 1550-2368
- OpenAlex
- W1998229943
- Cited by
- 178
- References
- 141
- Citations by year
- 2026: 1 · 2025: 14 · 2024: 10 · 2023: 14 · 2022: 10 · 2021: 7 · 2020: 8 · 2019: 8 · 2018: 2 · 2017: 14 · 2016: 6 · 2015: 11 · 2014: 6 · 2013: 8 · 2012: 16
- FWCI
- 6.19
- Type
- journal article
- Language
- en
- Open access
- green
- in2p3.hal.science
- Locations
- Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (publishedVersion)
- HAL (submittedVersion)
- arXiv (Cornell University) (submittedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- arXiv (Cornell University)
- Funders
- U.S. Department of Energy (DE‐FG02‐)
- Centre National de la Recherche Scientifique
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Nuclear physics research studies
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Particle physics theoretical and experimental studies
- Keywords
- big bang nucleosynthesis, neutron lifetime, neutron-proton mass difference, Yukawa couplings, fine-structure constant variation, helium-4 abundance, deuterium abundance, pion mass dependence, variation of fundamental constants
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