期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP03(2021)007
关键词
Classical Theories of Gravity; String Duality
资金
- UBACyT
- [PIP-CONICET-11220150100559CO]
- [ANPCyT-PICT-2016-1358]
The alpha ' -complete cosmology developed by Hohm and Zwiebach categorizes O(d, d; ) invariant theories and explores the construction and properties of non-perturbative de Sitter solutions within this theoretical framework.
The alpha ' -complete cosmology developed by Hohm and Zwiebach classifies the O(d, d; ) invariant theories involving metric, b-field and dilaton that only depend on time, to all orders in alpha '. Some of these theories feature non-perturbative isotropic de Sitter vacua in the string frame, generated by the infinite number of higher-derivatives of O(d, d; ) multiplets. Extending the isotropic ansatz, we construct stable and unstable non-perturbative de Sitter solutions in the string and Einstein frames. The generalized equations of motion admit new solutions, including anisotropic d + 1-dimensional metrics and non-vanishing b-field. In particular, we find dS(n+1)x Td-n geometries with constant dilaton, and also metrics with bounded scale factors in the spatial dimensions with non-trivial b-field. We discuss the stability and non-perturbative character of the solutions, as well as possible applications.
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