Dynamics in nonlocal cosmological models derived from string field theory

2007/07/31 by Liudmila V Joukovskaya, Liudmila Joukovskaya · 85 citations
Mathematics · Medicine · Physics and Astronomy · #Biofield Effects and Biophysics #Classical mechanics #Cosmological constant #Cosmological model #Cosmology #Cosmology and Gravitation Theories #Dark energy #Field (mathematics) #Friedmann equations #Mathematical physics #Mathematics #Operator (biology) #Physics #Pure mathematics #Quantum mechanics #String (physics) #Tachyon #Theoretical physics #advanced mathematical theories #astro-ph #gr-qc #hep-th

paper · pdf · doi:10.1103/physrevd.76.105007

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 76(10) (American Physical Society) · 21 pages, 7 figures, v3: updated to match PRD version

openalex publication_date 2007/11/09 · arxiv created 2007/11/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

A general class of nonlocal cosmological models is considered. A new method for solving nonlocal Friedmann equations is proposed, and solutions of the Friedmann equations with nonlocal operator are presented. The cosmological properties of these solutions are discussed. Especially indicated is the p-adic cosmological model in which we have obtained a nonsingular bouncing solution and string field theory tachyon model in which we have obtained full solution of nonlocal Friedmann equations with w=\ensuremath-1 at large times. The possibility of obtaining a realistic value of the cosmological constant from nonlocal cosmological models is also discussed.

Citations

• On Some Nonlinear Integral Equation in the (Super)String Theory
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• Dilatonic ghost condensate as dark energy
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• Dynamics of dark energy
• Is cosmic speed-up due to new gravitational physics?
• Three‐YearWilkinson Microwave Anisotropy Probe(WMAP) Observations: Implications for Cosmology
• Time lumps in nonlocal stringy models and cosmological applications
• The pre-big bang scenario in string cosmology
• Spontaneous breaking of Lorentz symmetry in string theory
• Comparison of Approaches to Quantum Correction of Black Hole Thermodynamics
• Phantom without pathologies in the ultraviolet domain

Cited by

• Phase space description of nonlocal teleparallel gravity
• Localization of nonlocal theories
• Nonlocal star as a blackhole mimicker
• Pure gauge configurations and tachyon solutions to string field theories equations of motion
• Super-accelerating bouncing cosmology in asymptotically free non-local gravity
• Inflation in string field theory