Time‐dependent orbifolds and string cosmology
By L. Cornalba, Miguel S. Costa. 2003
190 citations recorded by the source corpus.
In these lectures, we review the physics of time-dependent orbifolds of string theory, with particular attention to orbifolds of three-dimensional Minkowski space. We discuss the propagation of free particles in the orbifold geometries, together with their interactions. We address the issue of stability of these string vacua and the difficulties in defining a consistent perturbation theory, pointing to possible solutions. In particular, it is shown that resumming part of the perturbative expansion gives finite amplitudes. Finally we discuss the duality of some orbifold models with the physics of orientifold planes, and we describe cosmological models based on the dynamics of these orientifolds.
Subfields: Applied Mathematics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/16d30b6fc7bd50e167649eea917dd88e40ab46c7
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In Applied Mathematics
In Nuclear and High Energy Physics
In Statistical and Nonlinear Physics
Citations in the corpus
- Flat holography: aspects of the dual field theory (2016, methodology): “The formula reproduces the BekensteinHawking entropy of the so-called Flat space cosmologies (FSCs) which are (shiftedboost) orbifolds of flat-space and are time dependent solutions of Einstein’s equations in asymptotically flat spacetimes with cosmological horizons [36].”
- Bouncing Cosmologies: Progress and Problems (2016, background): “Orbifold models have also been studied as a means for obtaining nonsingular cosmological solutions in [117].”
- Searching for slow-roll moduli inflation in massive type IIA supergravity with metric fluxes (2008, methodology): “After the ground breaking work of KKLT provided a mechanism to stabilize all moduli in the context of type IIB string theory [3], a lot of work has been done toward understanding inflation in string theory setups that are under control [4], [5], [6], [7], [8], [9], [2].”