Dark energy and string theory

Per Berglund

doi:10.1016/j.physletb.2019.134950

2019-11-01

Per Berglund *

Tristan Hübsch

Djordje Minić

DOI：10.1016/j.physletb.2019.134950

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摘要

En 中文

A radiatively stable de Sitter spacetime is constructed by considering an intrinsically non-commutative and generalized-geometric formulation of string theory, which is related to a family of F-theory models endowed with non-trivial anisotropic axion-dilaton backgrounds. In particular, the curvature of the canonically conjugate dual space provides for a positive cosmological constant to leading order, that satisfies a radiatively stable see-saw-like formula, which in turn induces the dark energy in the observed spacetime. We also comment on the non-commutative phase of the non-perturbative formulations of string theory/quantum gravity implied by this approach. (C) 2019 Published by Elsevier B.V.

Keyword:

COSMOLOGICAL-CONSTANT

COMPACTIFICATIONS

MODELS

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Physics Letters B

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4.5

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