Spikes in the relic graviton background from quintessential inflation
Open accessAbstract
The energy spectra of gravitational waves (GWs) produced in quintessential inflationary models increase in frequency and exhibit a sharp spike around 170 GHz where the associated fraction of critical energy density presently stored in relic gravitons is of the order of 10 -6 . The maximal energy density present (today) in the stochastic GW background of quintessential origin is mainly constrained by the consistency with the (homogeneous and isotropic) big-bang nucleosynthesis scenario. We contrast our findings with the spectra of ordinary inflationary models and we comment on possible detection strategies for the spike.
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In many scenarios with a stiff or ekpyrotic phase, the background dynamics can enhance high-frequency stochastic gravitational waves and tilt the tensor spectrum blue.
“Third, in many scenarios with a stiff or ekpyrotic phase, the background dynamics can enhance highfrequency stochastic gravitational waves and tilt the tensor spectrum blue [40].”
From Dynamical systems analysis of an Einstein–Cartan ekpyrotic nonsingular bounce cosmology (2026) · cites this paper as [40]
The discussion on p. 2 says that a post-inflationary stiff phase produces relic-graviton spectra that are blue and increase with frequency; the conclusion on p. 8 says the resulting signal can be much larger than after a direct transition to radiation domination. The paper addresses quintessential inflation with a stiff phase, but our copy does not address ekpyrotic phases or establish the claim across many scenarios. (LLM, conf=0.87)
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Research works printed but not linked: 5
- [3][3] P. J. E. Peebles and A. Vilenkin, Quintessential Inflation , astro-ph/9810509. - · arXiv
- [5][5] S. Perlmutter et al., Nature 391 , 51 (1998); A. G. Riess et al., astro-ph/9805201; P. M. Garnavich et al., astro-ph/9806396. - · arXiv
- [10][10] M. Giovannini, TUPT-01-99, astro-ph/9903004. - · arXiv
- [17][17] B. Allen, in Proceedings of the Les Houches School on Astrophysical Sources of Gravitational Waves, edited by J. Marck and J.P. Lasota (Cambridge University Press, Cambridge England, 1996); B. Allen and J. Romano, Detecting a stochastic background of gravitational radiation: signal processing strategies and sensitivities , WISC-MILW-97TH-14, gr-qc/9710117. - · arXiv
- [20][20] K. S. Thorne, in 300 Years of Gravitation ,edited by S. W. Hawking and W. Israel (Cambridge University Press, Cambridge, England, 1987).
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Quintessence and gravitational waves
Riazuelo, A., & Uzan, J.-P. (2000) · Physical Review D · doi:10.1103/physrevd.62.083506 · Cited by 134 · see citing works
Dynamical systems analysis of an Einstein–Cartan ekpyrotic nonsingular bounce cosmology
Stingley, J. (2026) · General Relativity and Gravitation · doi:10.1007/s10714-026-03547-w
- Authors
- Giovannini, M.
- Venue
- Classical and Quantum Gravity
- Publisher
- IOP Publishing
- Published
- 1999-08-06
- Volume
- 16
- Issue
- 9
- Pages
- 2905-2913
- ISSN
- 0264-9381 (ISSN-L)
- 1361-6382
- OpenAlex
- W2062807144
- Cited by
- 116
- References
- 0
- Citations by year
- 2025: 8 · 2024: 9 · 2023: 6 · 2022: 4 · 2021: 6 · 2020: 6 · 2019: 4 · 2018: 6 · 2017: 6 · 2016: 3 · 2015: 2 · 2014: 6 · 2013: 1
- FWCI
- 3.00
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Classical and Quantum Gravity (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Pulsars and Gravitational Waves Research
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Keywords
- quintessential inflation, relic gravitons, gravitational wave background, stochastic gravitational waves, gravitational wave energy spectrum, big bang nucleosynthesis constraints, inflationary models, gravitational wave detection
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