63 citations · 153 across the 8 of their papers we have counts for
7 papers · 1 filter
Fefferman-Graham and Bondi Gauges in the Fluid/Gravity Correspondence
Luca Ciambelli, Charles Marteau, P. Marios Petropoulos +1
In three-dimensional gravity, we discuss the relation between the Fefferman--Graham gauge, the Bondi gauge and the Eddington--Finkelstein type of gauge, often referred to as the de…
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…
Geometric flows in Horava-Lifshitz gravity
Ioannis Bakas, Francois Bourliot, Dieter Lust +1
We consider instanton solutions of Euclidean Horava-Lifshitz gravity in four dimensions satisfying the detailed balance condition. They are described by geometric flows in three di…
Mixmaster universe in Horava-Lifshitz gravity
Ioannis Bakas, Francois Bourliot, Dieter Lust +1
We consider spatially homogeneous (but generally non-isotropic) cosmologies in the recently proposed Horava-Lifshitz gravity and compare them to those of general relativity using H…
Solving the Decompactification Problem in String Theory
E. Kiritsis, C. Kounnas, M. Petropoulos +1
We investigate heterotic ground states in four dimensions in which N=4 supersymmetry is spontaneously broken to N=2. N=4 supersymmetry is restored at a decompactification limit cor…
On the Heterotic Effective Action at One-Loop, Gauge Couplings and the Gravitational Sector
E. Kiritsis, C. Kounnas, M. Petropoulos +1
We present in detail the procedure for calculating the heterotic one-loop effective action. We focus on gravitational and gauge couplings. We show that the two-derivative couplings…
One loop corrections to coupling constants in String Effective Field Theory
M. Petropoulos
In the framework of a recently proposed method for computing exactly string amplitudes regularized in the infra-red, I determine the one-loop correlators for auxiliary fields in th…