Dynamics in Nonlocal Cosmological Models Derived from String Field Theory

Details Dynamics in Nonlocal Cosmological Models Derived from String Field Theory Dynamics in Nonlocal Cosmological Models Derived from String Field Theory

2007-07-11

arxiv.org/abs/0707.1545v3

Phys.Rev.D76:105007,2007

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, 7 figures, v3: updated to match PRD version

Scientific paper

10.1103/PhysRevD.76.105007

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 $p$-adic cosmological model in which we have obtained nonsingular bouncing solution and string field theory tachyon model in which we have obtained full solution of nonlocal Friedmann equations with $w=-1$ at large times. The possibility of obtaining realistic value of cosmological constant from nonlocal cosmological models is also discussed.

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