113 citations · 367 across the 8 of their papers we have counts for
8 papers
Non-Abelian coset string backgrounds from asymptotic and initial data
P. M. Petropoulos, K. Sfetsos
We describe hierarchies of exact string backgrounds obtained as non-Abelian cosets of orthogonal groups and having a space--time realization in terms of gauged WZW models. For each…
PP-waves and logarithmic conformal field theories
I. Bakas, K. Sfetsos
We provide a world-sheet interpretation to the plane wave limit of a large class of exact supergravity backgrounds in terms of logarithmic conformal field theories. As an illustrat…
Non-standard compactifications with mass gaps and Newton's law
A. Brandhuber, K. Sfetsos
The four-dimensional Minkowski space-time is considered as a three-brane embedded in five dimensions, using solutions of five-dimensional supergravity. These backgrounds have a str…
Non--Abelian Duality, Parafermions and Supersymmetry
Konstadinos Sfetsos
Non--Abelian duality in relation to supersymmetry is examined. When the action of the isometry group on the complex structures is non--trivial, extended supersymmetry is realized n…
T-duality and world-sheet supersymmetry
I. Bakas, K. Sfetsos
Four-dimensional string backgrounds with local realizations of N = 4 world-sheet supersymmetry have, in the presence of a rotational Killing symmetry, only one complex structure wh…
Stochastic Tachyon Fluctuations, Marginal Deformations and Shock Waves in String Theory
Konstadinos Sfetsos
Starting with exact solutions to string theory on curved spacetimes we obtain deformations that represent gravitational shock waves. These may exist in the presence or absence of s…