97 citations · 810 across the 20 of their papers we have counts for
20 papers
Pomerons and BCFW recursion relations for strings on D-branes
Angelos Fotopoulos, Nikolaos Prezas
We derive pomeron vertex operators for bosonic strings and superstrings in the presence of D-branes. We demonstrate how they can be used in order to compute the Regge behavior of s…
NS5-branes, holography and CFT deformations
A. Fotopoulos, P. M. Petropoulos, N. Prezas +1
A few supergravity solutions representing configurations of NS5-branes admit exact conformal field theory (CFT) description. Deformations of these solutions should be described by…
Conformal chiral boson models on twisted doubled tori and non-geometric string vacua
Spyros D. Avramis, Jean-Pierre Derendinger, Nikolaos Prezas
We derive and analyze the conditions for quantum conformal and Lorentz invariance of the duality symmetric interacting chiral boson sigma-models, which are conjectured to describe…
Supersymmetric deformations of F1-NS5-branes and their exact CFT description
P. Marios Petropoulos, Nikolaos Prezas, Konstadinos Sfetsos
We consider certain classes of operators in the exact conformal field theory SL(2,R) x SU(2) x U(1)^4 describing strings in an AdS(3) x S(3) x T4 geometry supported by Neveu--Schwa…
Worldsheet theories for non-geometric string backgrounds
Gianguido Dall'Agata, Nikolaos Prezas
We show that twisted doubled tori can be used to construct a general class of worldsheet models describing non-geometric string backgrounds. By employing a first order formulation…
Supersymmetric moduli of the SU(2) x R linear dilaton background and NS5-branes
Nikolaos Prezas, Konstadinos Sfetsos
We study several classes of marginal deformations of the conformal field theory SU(2) x R. This theory describes the near-horizon region of a stack of parallel and coincident NS5-b…