10 papers
Cosmic Gravitational Wave Background in String Cosmology
Ram Brustein
String cosmology models predict a stochastic cosmic background of gravitational waves with a characteristic spectrum. I describe the background, present astrophysical and cosmologi…
Towards Evaluation of Stringy Non-Perturbative Effects
R. Brustein, B. A. Ovrut
We report on progress towards evaluation of stringy non-perturbative effects, using a two dimensional effective field theory for matrix models. We briefly discuss the relevance of…
Gravitational Radiation from String Cosmology
R. Brustein, M. Gasperini, M. Giovannini +1
A spectrum of relic stochastic gravitational radiation, strongly tilted towards high frequencies, and characterized by two basic parameters is shown to emerge in a class of string…
DILATON-DRIVEN INFLATION IN STRING COSMOLOGY
Ram Brustein
I present an outline for cosmological evolution in the framework of string theory with emphasis on a phase of dilaton-driven kinetic inflation. It is shown that a typical backgroun…
Supersymmetric Field Theory from Supermatrix Models
R. Brustein, M. Faux, B. Ovrut
We show that the continuum limit of one-dimensional N=2 supersymmetric matrix models can be described by a two-dimensional interacting field theory of a massless boson and two chir…
The Strength of Non-Perturbative Effects in Matrix Models and String Effective Lagrangians
R. Brustein, M. Faux, B. Ovrut
We present a summary of the results of an explicit calculation of the strength of non-perturbative interactions in matrix models and string effective Lagrangians. These interaction…