Exact cosmological solutions of 4D string gravity in the string frame
- Title
- Exact cosmological solutions of 4D string gravity in the string frame
- Author
- 윤용성
- Keywords
- PRE-BIG-BANG
- Issue Date
- 2014-05
- Publisher
- ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
- Citation
- NUCLEAR PHYSICS B, 권: 882, 페이지: 219-228
- Abstract
- We have discussed a particular class of exact cosmological solutions of the 4-dimensional low energy string gravity in the string frame. In the vacuum without matter and the 2-form fields, the exact cosmological solutions always give monotonically shrinking universes if the dilaton field is not a constant. However, in the presence of the 2-form fields and/or the radiation-like fluid in the string frame, the exact cosmological solutions show a minimum size of the universe in the evolution, but with an initial cosmological curvature singularity in the string frame. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
- URI
- https://www.sciencedirect.com/science/article/pii/S0550321314000686?via%3Dihubhttp://hdl.handle.net/20.500.11754/45893
- ISSN
- 0550-3213; 1873-1562
- DOI
- 10.1016/j.nuclphysb.2014.03.001
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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