3.6k citations · 46.5k across the 265 of their papers we have counts for
30 papers · 1 filter
PP-waves on Superbrane Backgrounds
Marco Cavaglia, Benjamin Harms
In this paper we discuss a method of generating supersymmetric solutions of the Einstein equations. The method involves the embedding of one supersymmetric spacetime into another.…
Gravitational Larmor formula in higher dimensions
Vitor Cardoso, Marco Cavaglia, Jun-Qi Guo
The Larmor formula for scalar and gravitational radiation from a pointlike particle is derived in any even higher-dimensional flat spacetime. General expressions for the field in t…
Gravitational diffraction radiation
Vitor Cardoso, Marco Cavaglia, Mario Pimenta
We show that if the visible universe is a membrane embedded in a higher-dimensional space, particles in uniform motion radiate gravitational waves because of spacetime lumpiness. T…
Hawking emission of gravitons in higher dimensions: non-rotating black holes
Vitor Cardoso, Marco Cavaglia, Leonardo Gualtieri
We compute the absorption cross section and the total power carried by gravitons in the evaporation process of a higher-dimensional non-rotating black hole. These results are appli…
Black hole particle emission in higher-dimensional spacetimes
Vitor Cardoso, Marco Cavaglia, Leonardo Gualtieri
In models with extra dimensions, a black hole evaporates both in the bulk and on the visible brane, where standard model fields live. The exact emissivities of each particle specie…
Relic gravitons on Kasner-like branes
M. Cavaglia', G. De Risi, M. Gasperini
We discuss the cosmological amplification of tensor perturbations in a simple example of brane-world scenario, in which massless gravitons are localized on a higher-dimensional Kas…
How classical are TeV-scale black holes?
Marco Cavaglia, Saurya Das
We show that the Hawking temperature and the entropy of black holes are subject to corrections from two sources: the generalized uncertainty principle and thermal fluctuations. Bot…
Gravitational energy loss in high energy particle collisions: ultrarelativistic plunge into a multidimensional black hole
Emanuele Berti, Marco Cavaglia, Leonardo Gualtieri
We investigate the gravitational energy emission of an ultrarelativistic particle radially falling into a D-dimensional black hole. We numerically integrate the equations describin…
Two-dimensional dS/CFT correspondence
M. Cadoni, P. Carta, M. Cavaglia' +1
We investigate de Sitter/conformal field theory (dS/CFT) correspondence in two dimensions. We define the conserved mass of de Sitter spacetime and formulate the correspondence alon…
Brane factories
Eun-Joo Ahn, Marco Cavaglia, Angela V. Olinto
We propose that higher-dimensional extended objects (p-branes) are created by super-Planckian scattering processes in theories with TeV scale gravity. As an example, we compute the…
Quantum gravitational corrections to black hole geometries
Marco Cavaglia, Alessandro Fabbri
We calculate perturbative quantum gravity corrections to eternal two-dimensional black holes. We estimate the leading corrections to the AdS_2 black hole entropy and determine the…
Conformal Dynamics of 0-Branes
M. Cadoni, P. Carta, M. Cavaglia' +1
We investigate the dynamics of dilatonic D-dimensional 0-branes in the near-horizon regime. The theory is given in a twofold form: two-dimensional dilaton gravity and nonlinear sig…
Pre-big bang in M-theory
Marco Cavaglia
We discuss a simple cosmological model derived from M-theory. Three assumptions lead naturally to a pre-big bang scenario: (a) 11-dimensional supergravity describes the low-energy…
A note on Weyl transformations in two-dimensional dilaton gravity
Marco Cavaglia
We discuss Weyl (conformal) transformations in two-dimensional matterless dilaton gravity. We argue that both classical and quantum dilaton gravity theories are invariant under Wey…
Canonical and quantum FRW cosmological solutions in M-theory
Marco Cavaglia, Paulo Vargas Moniz
We present the canonical and quantum cosmological investigation of a spatially flat, four-dimensional Friedmann-Robertson-Walker (FRW) model that is derived from the M-theory effec…
Open strings, 2D gravity and AdS/CFT correspondence
Mariano Cadoni, Marco Cavaglia'
We present a detailed discussion of the duality between dilaton gravity on AdS_2 and open strings. The correspondence between the two theories is established using their symmetries…
Two-dimensional black holes as open strings: A new realization of the ADS/CFT correspondence
Mariano Cadoni, Marco Cavaglia'
We show that weak-coupled two-dimensional dilaton gravity on Anti-de Sitter space can be described by the dynamics of an open string. Neumann and Dirichlet boundary conditions for…
Quantum gravity corrections to the Schwarzschild mass
Marco Cavaglia, Carlo Ungarelli
Vacuum spherically symmetric Einstein gravity in dimensions can be cast in a two-dimensional conformal nonlinear sigma model form by first integrating on the -dimen…
Static Quantization of Two-dimensional Dilaton Gravity and Black Holes
Marco Cavaglia, Vittorio de Alfaro
Two-dimensional matterless dilaton gravity is a topological theory and can be classically reduced to a (0+1)-dimensional theory with a finite number of degrees of freedom. If quant…
Geometrodynamical Formulation of Two-Dimensional Dilaton Gravity
Marco Cavaglia
Two-dimensional matterless dilaton gravity with arbitrary dilatonic potential can be discussed in a unitary way, both in the Lagrangian and canonical frameworks, by introducing sui…
Geometrodynamical Formulation of Two-Dimensional Dilaton Gravity and the Quantum Birkhoff Theorem
Marco Cavaglia
General two-dimensional pure dilaton-gravity can be discussed in a unitary way by introducing suitable field redefinitions. The new fields are directly related to the original spac…
Two-Dimensional Dilaton Gravity
Marco Cavaglia
I briefly summarize recent results on classical and quantum dilaton gravity in 1+1 dimensions.
Integrable Models in Two-Dimensional Dilaton Gravity
Marco Cavaglia
We briefly present two-dimensional dilaton gravity from the point of view of integrable systems.
Quantization of the String Inspired Dilaton Gravity and the Birkhoff Theorem
Marco Cavaglia, Vittorio de Alfaro, Alexandre T. Filippov
We develop a simple scheme of quantization for the dilaton CGHS model without scalar fields, that uses the Gupta-Bleuler approach for the string fields. This is possible because th…