Cosmological solutions in string theories Academic Article

abstract

• We obtain a large class of cosmological solutions in the toroidally compactified low-energy limits of string theories in [Formula presented] dimensions. We consider solutions where a [Formula presented]-dimensional subset of the spatial coordinates, parametrizing a flat space, a sphere, or a hyperboloid, describes the spatial sections of the physically observed Universe. The equations of motion reduce to Liouville or SL[Formula presented] Toda equations, which are exactly solvable. We study some of the cases in detail, and find that under suitable conditions they can describe four-dimensional expanding universes. We discuss also how the solutions in [Formula presented] dimensions behave upon oxidation back to the [Formula presented] string theory or [Formula presented] [Formula presented] theory. 1997 The American Physical Society.

authors

• Pope, Christopher

published proceedings

• PHYSICAL REVIEW D

author list (cited authors)

• Lu, H., Mukherji, S., Pope, C. N., & Xu, K. W.

citation count

• 88

complete list of authors

• Lu, H||Mukherji, S||Pope, CN||Xu, KW

publication date

• June 1997

publisher

• American Physical Society (APS)  Publisher

published in

• n0556-2821ISSN  Journal

keywords

• 49 Mathematical Sciences
• 4902 Mathematical Physics
• 51 Physical Sciences
• 5106 Nuclear And Plasma Physics
• 5107 Particle And High Energy Physics

Digital Object Identifier (DOI)

• 10.1103/PhysRevD.55.7926

start page

• 7926

end page

• 7935

volume

• 55

issue

• 12

URL

• http://dx.doi.org/10.1103/physrevd.55.7926