143 citations · 484 across the 12 of their papers we have counts for
12 papers
Massive, massless and ghost modes of gravitational waves from higher-order gravity
Charalampos Bogdanos, Salvatore Capozziello, Mariafelicia De Laurentis +1
We linearize the field equations for higher order theories that contain scalar invariants other than the Ricci scalar. We find that besides a massless spin-2 field (the standard gr…
Perturbative instabilities in Horava gravity
C. Bogdanos, Emmanuel N. Saridakis
We investigate the scalar and tensor perturbations in Horava gravity, with and without detailed balance, around a flat background. Once both types of perturbations are taken into a…
Einstein-Gauss-Bonnet metrics: black holes, black strings and a staticity theorem
C. Bogdanos, C. Charmousis, B. Gouteraux +1
We find the general solution of the 6-dimensional Einstein-Gauss-Bonnet equations in a large class of space and time-dependent warped geometries. Several distinct families of solut…
Diagrammatic Derivation of Lovelock Densities
C. Bogdanos
We discuss a method of calculating the various scalar densities encountered in Lovelock theory which relies on diagrammatic, instead of algebraic manipulations. Taking advantage of…
Pseudo-3-Branes in a Curved 6D Bulk
C. Bogdanos, A. Kehagias, K. Tamvakis
We consider a model involving a 4-brane in a 6D bulk which carries sigma model fields. An axion field on the 4-brane cancels the pressure along one direction leading to an effectiv…
Synergistic Gravity and the Role of Resonances in GRS-Inspired Braneworlds
C. Bogdanos, A. Dimitriadis, K. Tamvakis
We consider 5D braneworld models of quasi-localized gravity in which 4D gravity is reproduced at intermediate scales while the extra dimension opens up at both the very short and t…