Cited by 449Cosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsNoncommutative and Quantum Gravity Theories

Quintessence as a runaway dilaton

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Gasperini, M., Piazza, F., Veneziano, G.·2001·Physical Review D

Abstract

We consider a late-time cosmological model based on a recent proposal that the infinite-bare-coupling limit of superstring or M theory exists and has good phenomenological properties, including a vanishing cosmological constant, and a massless, decoupled dilaton. As it runs away to $+\ensuremath{\infty},$ the dilaton can play the role of the quintessence field recently advocated to drive the late-time accelerated expansion of the Universe. If, as suggested by some string theory examples, appreciable deviations from general relativity persist even today in the dark matter sector, the Universe may smoothly evolve from an initial ``focusing'' stage, lasting until radiation-matter equality, to a ``dragging'' regime, which eventually gives rise to an accelerated expansion with frozen $\ensuremath{\Omega}(\mathrm{dark}\mathrm{}\mathrm{energy})/\ensuremath{\Omega}(\mathrm{dark}\mathrm{}\mathrm{matter}).$

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Research works printed but not linked: 6

  1. ͓8͔ P. Bine `truy, in Proceedings of the LXXI Les Houches Summer School ''The Primordial Universe,'' edited by P. Bine `truy, R. Schaeffer, J. Silk, and F. David ͑Springer-Verlag, Berlin, 2000͒, p. 397.
  2. ͓17͔ M.B. Green, J. Schwartz, and E. Witten, Superstring Theory ͑Cambridge University Press, Cambridge, England, 1987͒.
  3. ͓20͔ M. Gasperini, Class. Quantum Grav. 17, R1 ͑2000͒; G. Ven- eziano, in Proceedings of the LXXI Les Houches Summer School ''The Primordial Universe,'' edited by P. Bine `truy, R. Schaeffer, J. Silk, and F. David ͑Springer-Verlag, Berlin, 2000͒, p. 581;
  4. M. Gasperini, in Proceedings of the Second SIGRAV School on ''Gravitational Waves in Astrophysics, Co- mology and String Theory,''Centre A. Volta, Como, 1999, ed- ited by I. Ciufolini et al. ͑IOP Publishing, Bristol, 2001͒, p. 280;
  5. ͓21͔ G. Veneziano, in The Geometric Universe, edited by L.J. Ma- son, K.P. Tod, S.T. Tsou and N.M.J. Woodhouse ͑Oxford Uni- versity Press, Oxford, 1998͒, p. 235;
  6. ͓43͔ T. Damour Nucl. Phys. B ͑Proc. Suppl.͒ 80, 41 ͑2000͒.

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Authors
Gasperini, M., Piazza, F., & Veneziano, G.
Affiliations
  • Istituto Nazionale di Fisica Nucleare, Sezione di Bari (IT)
  • Université Paris-Sud (FR)
Venue
Physical Review D
Published
2001-12-21
Volume
65
Issue
2
ISSN
  • 0556-2821 (ISSN-L)
  • 1089-4918
OpenAlex
W2059602932
Cited by
449
References
46
Citations by year
2026: 10 · 2025: 18 · 2024: 34 · 2023: 23 · 2022: 20 · 2021: 15 · 2020: 13 · 2019: 12 · 2018: 39 · 2017: 12 · 2016: 18 · 2015: 17 · 2014: 31 · 2013: 21 · 2012: 20
FWCI
8.13
Type
journal article
Language
en
Open access
Locations
  • Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • International Linear Collider (submittedVersion)
  • CINECA IRIS Institutional Research Information System (University of Bari Aldo Moro) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
Keywords
quintessence, dilaton, superstring theory, M-theory, dark energy, cosmic acceleration, modified gravity, dark matter, cosmological constant

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