COSMOLOGICAL ROLLING SOLUTIONS OF NONLOCAL THEORIES.

Authors :: CALCAGNI, GIANLUCA
NARDELLI, GIUSEPPE
Gregory, R.
Source :: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology. Mar2010, Vol. 19 Issue 3, p329-338. 10p. 3 Graphs.
Publication Year :: 2010
Abstract: We find nonperturbative solutions of a nonlocal scalar field equation, with cubic or exponential potential on a cosmological background. The former case corresponds to the lowest level effective tachyon action of cubic string field theory. While the well known Minkowski solution is wildly oscillating, due to Hubble friction its cosmological counterpart describes smooth rolling toward the local minimum of the potential. [ABSTRACT FROM AUTHOR]

Subjects :: *SCALAR field theory
*CUBIC equations
*EXPONENTIAL functions
*EXPONENTIAL sums
*METAPHYSICAL cosmology

Language :: English
ISSN :: 02182718
Volume :: 19
Issue :: 3
Database :: Academic Search Index
Journal :: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology
Publication Type :: Academic Journal
Accession number :: 49505268
Full Text :: https://doi.org/10.1142/S0218271810016440