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Cited by 10Cosmology and Gravitation TheoriesNoncommutative and Quantum Gravity TheoriesBlack Holes and Theoretical Physics

Can backreaction prevent eternal inflation?

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Brandenberger, Robert, Costa, Renato, Franzmann, Guilherme·2015·Physical Review D
DOI 10.1103/physrevd.92.043517
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Abstract

We study the effects exerted by the backreaction of long-wavelength fluctuations on stochastic inflation. In the cases of power-law and Starobinsky inflation, these effects are too weak to terminate the stochastic growth of the inflaton field. However, in the case of the cyclic ekpyrotic scenario, the backreaction effects prevent the unlimited growth of the scalar field.

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  • The backreaction of fluctuations that have exited the Hubble radius leads to a decrease in effective energy density strong enough to prevent eternal expansion in the late-time dark-energy phase of ekpyrotic cosmology.

    “However, as Brandenberger et al. [119] show, the backreaction of fluctuations that have already exited the Hubble radius will lead to a decrease in the effective energy density, which is strong enough to prevent eternal expansion in the late-time dark-energy phase of ekpyrotic cosmology.”

    From Weyl Curvature Hypothesis in Light of Quantum Backreaction at Cosmological Singularities or Bounces (2021) · cites this paper as [119]

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Research works printed but not linked: 6

  1. [5]5. V. Mukhanov and G. Chibisov, "Quantum Fluctuation And Nonsingular Universe. (In Russian)," JETP Lett. 33, 532 (1981) [Pisma Zh. Eksp. Teor. Fiz. 33, 549 (1981)].
  2. [11]11. M. Li, X. D. Li, S. Wang and Y. Wang, "Dark Energy," Commun. Theor. Phys. 56, 525 (2011) [arXiv:1103.5870 [astro-ph.CO]]; · arXiv
  3. [13]13. N. C. Tsamis and R. P. Woodard, "Relaxing the cosmo- logical constant," Phys. Lett. B 301, 351 (1993);
  4. [17]17. V. F. Mukhanov, L. R. W. Abramo and R. H. Bran- denberger, "On the Back reaction problem for gravita- tional perturbations," Phys. Rev. Lett. 78, 1624 (1997) [gr-qc/9609026]. · arXiv
  5. [22]22. P. Martineau and R. H. Brandenberger, "The Effects of gravitational back-reaction on cosmological pertur- bations," Phys. Rev. D 72, 023507 (2005) [astro-ph/ 0505236].
  6. [23]23. J. M. Bardeen, "Gauge Invariant Cosmological Pertur- bations," Phys. Rev. D 22, 1882 (1980).

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Authors
Brandenberger, R., Costa, R., & Franzmann, G.
Affiliations
McGill University (CA)
ORCID
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
2015-08-25
Volume
92
Issue
4
ISSN
  • 0556-2821 (ISSN-L)
  • 1550-7998
  • 1550-2368
DOI
10.1103/physrevd.92.043517
OpenAlex
W1689867260
Semantic Scholar
6fb0d8b4ab77cc4194b71c094b50f26a8f1f9a61
Cited by
10
References
44
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2021: 2 · 2019: 1 · 2017: 2 · 2016: 1 · 2015: 1
FWCI
0.76
Type
journal article
Language
en
Open access
Licence
link.aps.org/licenses/aps-default-license (vor)
Locations
  • Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (publishedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
  • arXiv (Cornell University) (submittedVersion)
  • Americanae (AECID Library) (submittedVersion, other-oa)
  • arXiv (Cornell University)
Funders
  • Natural Sciences and Engineering Research Council of Canada
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (5149/2014-02)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
Keywords
backreaction, eternal inflation, stochastic inflation, long-wavelength fluctuations, power-law inflation, Starobinsky inflation, inflaton

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