Dynamics in nonlocal cosmological models derived from string field theory

被引：65

作者：

Joukovskaya, Liudmila ^{[1
]}

机构：

[1] Univ Cambridge, Ctr Math Sci, DAMTP, Cambridge CB3 0WA, England

来源：

PHYSICAL REVIEW D | 2007年 / 76卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.76.105007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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=-1 at large times. The possibility of obtaining a realistic value of the cosmological constant from nonlocal cosmological models is also discussed.

引用

页数：12

共 91 条

[71] Observational evidence from supernovae for an accelerating universe and a cosmological constant [J].

Riess, AG ;

Filippenko, AV ;

Challis, P ;

Clocchiatti, A ;

Diercks, A ;

Garnavich, PM ;

Gilliland, RL ;

Hogan, CJ ;

Jha, S ;

Kirshner, RP ;

Leibundgut, B ;

Phillips, MM ;

Reiss, D ;

Schmidt, BP ;

Schommer, RA ;

Smith, RC ;

Spyromilio, J ;

Stubbs, C ;

Suntzeff, NB ;

Tonry, J .

ASTRONOMICAL JOURNAL, 1998, 116 (03) :1009-1038

[72] Phantom without pathologies in the ultraviolet domain [J].

Rubakov, V. A. .

THEORETICAL AND MATHEMATICAL PHYSICS, 2006, 149 (03) :1651-1664

[73] Cosmological parameters from combining the Lyman-α forest with CMB, galaxy clustering and SN constraints [J].

Seljak, Uros ;

Slosar, Anze ;

McDonald, Patrick .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2006, (10)

[74] Tachyon dynamics in open string theory [J].

Sen, A .

INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2005, 20 (24) :5513-5656

[75] The force of gravity from a Lagrangian containing inverse powers of the Ricci scalar [J].

Soussa, ME ;

Woodard, RP .

GENERAL RELATIVITY AND GRAVITATION, 2004, 36 (04) :855-862

[76] Three-year Wilkinson Microwave Anisotropy Probe (WMAP) observations:: Implications for cosmology [J].

Spergel, D. N. ;

Bean, R. ;

Dore, O. ;

Nolta, M. R. ;

Bennett, C. L. ;

Dunkley, J. ;

Hinshaw, G. ;

Jarosik, N. ;

Komatsu, E. ;

Page, L. ;

Peiris, H. V. ;

Verde, L. ;

Halpern, M. ;

Hill, R. S. ;

Kogut, A. ;

Limon, M. ;

Meyer, S. S. ;

Odegard, N. ;

Tucker, G. S. ;

Weiland, J. L. ;

Wollack, E. ;

Wright, E. L. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2007, 170 (02) :377-408

[77] First-year Wilkinson Microwave Anisotropy Probe (WMAP) observations:: Determination of cosmological parameters [J].

Spergel, DN ;

Verde, L ;

Peiris, HV ;

Komatsu, E ;

Nolta, MR ;

Bennett, CL ;

Halpern, M ;

Hinshaw, G ;

Jarosik, N ;

Kogut, A ;

Limon, M ;

Meyer, SS ;

Page, L ;

Tucker, GS ;

Weiland, JL ;

Wollack, E ;

Wright, EL .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2003, 148 (01) :175-194

[78] The three-dimensional power spectrum of galaxies from the Sloan Digital Sky Survey [J].

Tegmark, M ;

Blanton, MR ;

Strauss, MA ;

Hoyle, F ;

Schlegel, D ;

Scoccimarro, R ;

Vogeley, MS ;

Weinberg, DH ;

Zehavi, I ;

Berlind, A ;

Budavari, TS ;

Connolly, A ;

Eisenstein, DJ ;

Finkbeiner, D ;

Frieman, JA ;

Gunn, JE ;

Hamilton, AJS ;

Hui, L ;

Jain, B ;

Johnston, D ;

Kent, S ;

Lin, H ;

Nakajima, R ;

Nichol, RC ;

Ostriker, JP ;

Pope, A ;

Scranton, R ;

Seljak, U ;

Sheth, RK ;

Stebbins, A ;

Szalay, AS ;

Szapudi, I ;

Verde, L ;

Xu, YZ ;

Annis, J ;

Bahcall, NA ;

Brinkmann, J ;

Burles, S ;

Castander, FJ ;

Csabai, I ;

Loveday, J ;

Doi, M ;

Fukugita, M ;

Gott, JR ;

Hennessy, G ;

Hogg, DW ;

Ivezic, Z ;

Knapp, GR ;

Lamb, DQ ;

Lee, BC .

ASTROPHYSICAL JOURNAL, 2004, 606 (02) :702-740

[79] Scale invariance in expanding and contracting universes from two-field models [J].

Tolley, Andrew J. ;

Wesley, Daniel H. .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2007, (05)

[80] Construction of exact solutions in two-field cosmological models [J].

Vernov, S. Yu. .

THEORETICAL AND MATHEMATICAL PHYSICS, 2008, 155 (01) :544-556

← 1 2 3 4 5 6 7 8 9 10 →