38 citations · 155 across the 6 of their papers we have counts for
6 papers
Stabilizing moduli with thermal matter and nonperturbative effects
Rebecca J. Danos, Andrew R. Frey, Robert H. Brandenberger
Even with recent progress, it is still very much an open question to understand how all compactification moduli are stabilized, since there are several mechanisms. For example, it…
Predictions of the causal entropic principle for environmental conditions of the universe
James M. Cline, Andrew R. Frey, Gilbert Holder
The causal entropic principle has been proposed as a superior alternative to the anthropic principle for understanding the magnitude of the cosmological constant. In this approach,…
Towards A Nonsingular Tachyonic Big Crunch
Robert H. Brandenberger, Andrew R. Frey, Sugumi Kanno
We discuss an effective field theory background containing the gravitational field, the dilaton and a closed string tachyon, and couple this background to a gas of fundamental stri…
Emergence of Fluctuations from a Tachyonic Big Bang
Robert H. Brandenberger, Andrew R. Frey, Sugumi Kanno
It has recently been speculated that the end state of a collapsing universe is a tachyonic big crunch. The time reversal of this process would be the emergence of an expanding univ…
Graceful exit from a stringy landscape via MSSM inflation
Rouzbeh Allahverdi, Andrew R. Frey, Anupam Mazumdar
The cosmological evolution of the string landscape is expected to consist of multiple stages of old inflation with large cosmological constant ending by tunnelling. Old inflation h…
Warped Strings: Self-dual Flux and Contemporary Compactifications
Andrew R. Frey
I review type IIB string compactifications in which the three-form field strengths satisfy a self-duality condition on the internal manifold. I begin with an overview of the models…