Cosmological string theories and discrete inflation
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In this article, a catalogue of string theories which can be interpreted as Robertson-Walker cosmologies is presented, which correspond to conformal field theories on group manifolds, with the sizes of the Einstein universes related to the level of the Kac-Moody algebra and Milne universes also offering a geometrical interpretation of a Goddard-Kent-Olive coset construction.About:
This article is published in Physics Letters B.The article was published on 1988-09-08 and is currently open access. It has received 236 citations till now. The article focuses on the topics: String cosmology & Non-critical string theory.read more
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Worldsheet approach to heterotic instantons and solitons
TL;DR: In this paper, instantons and soliton solutions of heterotic string theory are investigated with an emphasis on the worldsheet point of view, where instantons have the structure of a fivebrane in ten dimensions, the solitons are simply related to the instantons by Wick rotation.
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Elements of string cosmology
Arkady A. Tseytlin,Cumrun Vafa +1 more
TL;DR: In this article, a reinterpretation of the universal cover of the) recently studied two-dimensional black hole solution as a conformal realization of cosmological solutions found previously by Mueller is presented.
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Superstrings and solitons
TL;DR: In this paper, a low-energy analysis of macroscopic superstrings is presented and various analogies between these superstrings and solitons in supersymmetric theories are discussed.
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Singularity-free cosmological solutions of the superstring effective action
TL;DR: In this paper, the cosmological solutions of the one-loop corrected superstring effective action, in a Friedmann-Robertson-Walker background, and in the presence of the dilaton and modulus fields, were studied.
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A New cosmological scenario in string theory
Lorenzo Cornalba,Miguel S. Costa +1 more
TL;DR: In this paper, the modular invariant one-loop partition function is computed for a two-dimensional cosmological model with a collapsing, an intermediate and an expanding phase, where the boundary between the collapsing phase and the intermediate phase is seen by comoving observers as a cosmologically past horizon.
References
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Book
Quantum Fields in Curved Space
N. D. Birrell,Paul Davies +1 more
TL;DR: A comprehensive review of the subject of gravitational effects in quantum field theory can be found in this paper, where special emphasis is given to the Hawking black hole evaporation effect, and to particle creation processes in the early universe.
Quantum Fields in Curved Space
N. D. Birrell,Paul Davies +1 more
TL;DR: A comprehensive review of the subject of gravitational effects in quantum field theory can be found in this paper, where special emphasis is given to the Hawking black hole evaporation effect, and to particle creation processes in the early universe.
Journal ArticleDOI
Infinite Conformal Symmetry in Two-Dimensional Quantum Field Theory
TL;DR: In this paper, the authors present an investigation of the massless, two-dimentional, interacting field theories and their invariance under an infinite-dimensional group of conformal transformations.
Book
Exact Solutions of Einstein's Field Equations
TL;DR: A survey of the known solutions of Einstein's field equations for vacuum, Einstein-Maxwell, pure radiation and perfect fluid sources can be found in this paper, where the solutions are ordered by their symmetry group, their algebraic structure (Petrov type) or other invariant properties such as special subspaces or tensor fields and embedding properties.
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Current Algebra and Wess-Zumino Model in Two-Dimensions
TL;DR: In this article, the anomalous dimensions of the Wess-Zumino fields are found exactly, and the multipoint correlation functions are shown to satisfy linear differential equations, in particular, Witten's non-abelean bosonisation rules are proven.