We obtain cosmological four dimensional solutions of the low energy effective string theory by reducing a five dimensional black hole, and black hole-de Sitter solution of Einstein gravity down to four dimensions. The appearance of a cosmological constant in the five dimensional Einstein-Hilbert action produces a special dilaton potential in the four dimensional effective string action. Cosmological scenarios implemented by our solutions are discussed.
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University of California,Center for Theoretical Physics and Department of PhysicsUniversity of California,Center for Theoretical Physics and Department of Physics
Jan Boruch
Roberto Emparan
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Institució Catalana de Recerca i Estudis Avançats (ICREA),Departament de Física Quàntica i Astrofísica and Institut de Ciències del CosmosUniversity of California,Center for Theoretical Physics and Department of Physics
Roberto Emparan
Luca V. Iliesiu
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Universitat de Barcelona,Department of MathematicsUniversity of California,Center for Theoretical Physics and Department of Physics
Luca V. Iliesiu
Sameer Murthy
论文数: 0引用数: 0
h-index: 0
机构:
University of California,Center for Theoretical Physics and Department of PhysicsUniversity of California,Center for Theoretical Physics and Department of Physics
机构:
University of California,Center for Theoretical Physics and Department of PhysicsUniversity of California,Center for Theoretical Physics and Department of Physics
Jan Boruch
Roberto Emparan
论文数: 0引用数: 0
h-index: 0
机构:
Institució Catalana de Recerca i Estudis Avançats (ICREA),Departament de Física Quàntica i Astrofísica and Institut de Ciències del CosmosUniversity of California,Center for Theoretical Physics and Department of Physics
Roberto Emparan
Luca V. Iliesiu
论文数: 0引用数: 0
h-index: 0
机构:
Universitat de Barcelona,Department of MathematicsUniversity of California,Center for Theoretical Physics and Department of Physics
Luca V. Iliesiu
Sameer Murthy
论文数: 0引用数: 0
h-index: 0
机构:
University of California,Center for Theoretical Physics and Department of PhysicsUniversity of California,Center for Theoretical Physics and Department of Physics