59 citations · 393 across the 12 of their papers we have counts for
12 papers
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…
Three-dimensional AdS gravity and extremal CFTs at c=8m
Spyros D. Avramis, Alex Kehagias, Constantina Mattheopoulou
We note that Witten's proposed duality between extremal c=24k CFTs and three-dimensional anti-de Sitter gravity may possibly be extended to central charges that are multiples of 8,…
Stability of string configurations dual to quarkonium states in AdS/CFT
Spyros D. Avramis, Konstadinos Sfetsos, Konstadinos Siampos
We extend our earlier work, regarding the perturbative stability of string configurations used for computing the interaction potential of heavy quarks within the gauge/gravity corr…
Complex marginal deformations of D3-brane geometries, their Penrose limits and giant gravitons
Spyros D. Avramis, Konstadinos Sfetsos, Dimitrios Zoakos
We apply the Lunin--Maldacena construction of gravity duals to beta-deformed gauge theories to a class of Type IIB backgrounds with U(1)^3 global symmetry, which include the multic…
Stability of strings dual to flux tubes between static quarks in N=4 SYM
Spyros D. Avramis, Konstadinos Sfetsos, Konstadinos Siampos
Computing heavy quark-antiquark potentials within the AdS/CFT correspondence often leads to behaviors that differ from what one expects on general physical grounds and field-theory…
Anomaly-Free Supergravities in Six Dimensions
Spyros D. Avramis
This thesis reviews minimal N=2 chiral supergravities coupled to matter in six dimensions with emphasis on anomaly cancellation. In general, six-dimensional chiral supergravities s…