177 citations · 3.1k across the 96 of their papers we have counts for
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Superstrings on Curved Spacetimes
Itzhak Bars
In this lecture I summarize recent developments on strings propagating in curved spacetime. Exact conformal field theories that describe gravitational backgrounds such as black hol…
Heterotic String Models in Curved Spacetime
Itzhak Bars
We explore the possibility of string theories in only four spacetime dimensions without any additional compactified dimensions. We show that, provided the theory is defined in curv…
Conformally Exact Metric and Dilaton in String Theory on Curved Spacetime
I. Bars, K. Sfetsos
Using a Hamiltonian approach to gauged WZW models, we present a general method for computing the conformally exact metric and dilaton, to all orders in the expansion, for any…
Global Analysis of New Gravitational Singularities in String and Particle Theories
I. Bars, K. Sfetsos
We present a global analysis of the geometries that arise in non-compact current algebra (or gauged WZW) coset models of strings and particles propagating in curved space-time. The…