pith. machine review for the scientific record. sign in

arxiv: 1110.0545 · v4 · submitted 2011-10-03 · ✦ hep-th · astro-ph.CO· gr-qc

Recognition: unknown

Constraints on String Cosmology

Stephen R. Green , Emil J. Martinec , Callum Quigley , Savdeep Sethi
Authors on Pith no claims yet
classification ✦ hep-th astro-ph.COgr-qc
keywords possiblestringforbiddeninteractionssittersolutionsacceleratinganti-de
0
0 comments X
read the original abstract

String theory contains sources like orientifold planes that support higher derivative interactions. These interactions make possible static flux compactifications which are forbidden in supergravity. They can also lead to violations of the strong energy condition (SEC) which is needed for an accelerating universe. We examine how large a violation is possible in the context of the heterotic string compactified to four dimensions. We find that de Sitter solutions are still not possible but that classically forbidden anti-de Sitter solutions are possible.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. de Sitter in String Theory vs. Gibbons & Hawking

    hep-th 2026-04 conditional novelty 5.0

    Perturbative string theory forbids de Sitter times closed manifold solutions under the assumption that the Euclidean sphere partition function receives a nonzero 1/G_N contribution.

  2. Dark energy from string theory: an introductory review

    hep-th 2026-03 unverdicted novelty 2.0

    String theory imposes constraints on dark energy but permits various construction attempts for de Sitter vacua and single-field exponential quintessence models despite obstructions.