84 citations · 429 across the 17 of their papers we have counts for
12 papers · 1 filter
Holographic Observables at Large
Dimitrios Giataganas, Nikolaos Pappas, Nicolaos Toumbas
We study holographically non-local observables in field theories at finite temperature and in the large limit. These include the Wilson loop, the entanglement entropy, as well…
Large and Ultra-compact Gauss-Bonnet Black Holes with a Self-interacting Scalar Field
Athanasios Bakopoulos, Panagiota Kanti, Nikolaos Pappas
We consider the Einstein-scalar-Gauss-Bonnet theory, and study the case where a negative cosmological constant is replaced by a more realistic, negative scalar-field potential. We…
Incorporating Physical Constraints in Braneworld Black-String Solutions for a Minkowski Brane in Scalar-Tensor Gravity
Theodoros Nakas, Panagiota Kanti, Nikolaos Pappas
In the framework of a general scalar-tensor theory, where the scalar field is non-minimally coupled to the five-dimensional Ricci scalar curvature, we investigate the emergence of…
On the Existence of Solutions with a Horizon in Pure Scalar-Gauss-Bonnet Theories
Athanasios Bakopoulos, Panagiota Kanti, Nikolaos Pappas
We consider the Einstein-scalar-Gauss-Bonnet theory and assume that, at regimes of large curvature, the Ricci scalar may be ignored compared to the quadratic Gauss-Bonnet term. We…
New Black-String Solutions for an Anti-de Sitter Brane in Scalar-Tensor Gravity
Theodoros Nakas, Nikolaos Pappas, Panagiota Kanti
We consider a five-dimensional theory with a scalar field non-minimally-coupled to gravity, and we look for novel black-string solutions in the bulk. By appropriately choosing the…
Hawking Radiation Spectra for Scalar Fields by a Higher-Dimensional Schwarzschild-de-Sitter Black Hole
T. Pappas, P. Kanti, N. Pappas
In this work, we study the propagation of scalar fields in the gravitational background of a higher-dimensional Schwarzschild-de-Sitter black hole as well as on the projected-on-th…
On the Localisation of 4-Dimensional Brane-World Black Holes II: the general case
P. Kanti, N. Pappas, T. Pappas
We perform a comprehensive analysis of a number of scalar field theories in a attempt to find analytically 5-dimensional, localised-on-the-brane, black-hole solutions. Extending a…
Greybody Factors for Scalar Fields emitted by a Higher-Dimensional Schwarzschild-de-Sitter Black-Hole
Panagiota Kanti, Thomas Pappas, Nikolaos Pappas
In this work, we consider the propagation of scalar particles in a higher-dimensional Schwarzschild-de-Sitter black-hole spacetime, both on the brane and in the bulk. Our analysis…
On the Localisation of 4-Dimensional Brane-World Black Holes
P. Kanti, N. Pappas, K. Zuleta
In the context of brane-world models, we pursue the question of the existence of 5-dimensional solutions describing regular black holes localised close to the brane. Employing a pe…
Angular profile of Particle Emission from a Higher-dimensional Black Hole: Analytic Results
Panagiota Kanti, Nikolaos Pappas
During the spin-down phase of the life of a higher-dimensional black hole, the emission of particles on the brane exhibits a strong angular variation with respect to the rotation a…
Emission of Massive Scalar Fields by a Higher-Dimensional Rotating Black-Hole
P. Kanti, N. Pappas
We perform a comprehensive study of the emission of massive scalar fields by a higher-dimensional, simply rotating black hole both in the bulk and on the brane. We derive approxima…
Graviton Emission in the Bulk by a Simply Rotating Black Hole
P. Kanti, Hideo Kodama, R. A. Konoplya +2
In this work, we study the emission of tensor-type gravitational degrees of freedom from a higher-dimensional, simply rotating black hole in the bulk. The decoupled radial part of…