368 citations · 2.3k across the 134 of their papers we have counts for
10 papers · 1 filter
The Step-Harmonic Potential
Luca Rizzi, Oliver F. Piattella, Sergio L. Cacciatori +1
We analyze the behavior of a quantum system described by a one-dimensional asymmetric potential consisting of a step plus a harmonic barrier. We solve the eigenvalue equation by th…
Supersymmetric AdS_4 black holes and attractors
Sergio L. Cacciatori, Dietmar Klemm
Using the general recipe given in arXiv:0804.0009, where all timelike supersymmetric solutions of N=2, D=4 gauged supergravity coupled to abelian vector multiplets were classified,…
Quantum radiation from superluminal refractive index perturbations
F. Belgiorno, S. L. Cacciatori, G. Ortenzi +2
We analyze in detail photon production induced by a superluminal refractive index perturbation in realistic experimental operating conditions. The interaction between the refractiv…
Quantum instability for charged scalar particles on charged Nariai and ultracold black hole manifolds
F. Belgiorno, S. L. Cacciatori, F. Dalla Piazza
We analyze in detail the quantum instability which characterizes charged scalar field on three special de Sitter charged black hole backgrounds. In particular, we compute exactly t…
Conserved quantities for the Sitter particles
Sergio L. Cacciatori
Recent observations of the luminosity-red shift relation of distant type Ia supernovae established the fact that the expansion of the universe is accelerated. This is interpreted b…
Pair-production of charged Dirac particles on charged Nariai and ultracold black hole manifolds
F. Belgiorno, S. L. Cacciatori, F. Dalla Piazza
Spontaneous loss of charge by charged black holes by means of pair-creation of charged Dirac particles is considered. We provide three examples of exact calculations for the sponta…
Exceptional groups, symmetric spaces and applications
Sergio L. Cacciatori, Bianca L. Cerchiai
In this article we provide a detailed description of a technique to obtain a simple parametrization for different exceptional Lie groups, such as G2, F4 and E6, based on their fibr…
Analogue Gravity and ultrashort laser pulse filamentation
D. Faccio, S. Cacciatori, V. Gorini +5
Ultrashort laser pulse filaments in dispersive nonlinear Kerr media induce a moving refractive index perturbation which modifies the space-time geometry as seen by co-propagating l…
Discrete Matter, Far Fields, and Dark Matter
A. Carati, S. L. Cacciatori, L. Galgani
We show that in cosmology the gravitational action of the far away matter has quite relevant effects, if retardation of the forces and discreteness of matter (with its spatial corr…
On a polynomial zeta function
Sergio L. Cacciatori
We introduce a polynomial zeta function , related to certain problems of mathematical physics, and compute its value and the value of its first derivative at the ori…