63 citations · 153 across the 8 of their papers we have counts for
8 papers
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…
Comment on superluminality in general relativity
Dieter Lust, Marios Petropoulos
General relativity provides an appropriate framework for addressing the issue of sub- or superluminality as an apparent effect. Even though a massless particle travels on the light…
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…