11 citations · 45 across the 7 of their papers we have counts for
7 papers
Characterising exotic matter driving wormhole
Marco Chianese, Elisabetta Di Grezia, Mattia Manfredonia +1
In this paper, we develop an iterative approach to span the whole set of exotic matter models able to drive a traversable wormhole. The method, based on a Taylor expansion of metri…
Self-dual road to noncommutative gravity with twist: a new analysis
Elisabetta Di Grezia, Giampiero Esposito, Patrizia Vitale
The field equations of noncommutative gravity can be obtained by replacing all exterior products by twist-deformed exterior products in the action functional of general relativity,…
Non-linear constitutive equations for gravitoelectromagnetism
Steven Duplij, Elisabetta Di Grezia, Giampiero Esposito +1
This paper studies non-linear constitutive equations for gravitoelectromagnetism. Eventually, the problem is solved of finding, for a given particular solution of the gravity-Maxwe…
Non-commutative Einstein equations and Seiberg-Witten map
Paolo Aschieri, Elisabetta Di Grezia, Giampiero Esposito
The Seiberg--Witten map is a powerful tool in non-commutative field theory, and it has been recently obtained in the literature for gravity itself, to first order in non-commutativ…
Describing Sr2RuO4 superconductivity in a generalized Ginzburg--Landau theory
E. Di Grezia, S. Esposito, G. Salesi
We propose a simple explanation of unconventional thermodynamical and magnetic properties observed for Sr2RuO4. Actually, our two-phase model of superconductivity, based on a strai…
Nonlocal field theory driven by a deformed product. Generalization of Kalb-Ramond duality
Elisabetta Di Grezia, Giampiero Esposito, Gennaro Miele
A modification of the standard product used in local field theory by means of an associative deformed product is proposed. We present a class of deformed products, one for every sp…
Quantum phase excitations in Ginzburg-Landau superconductors
E. Di Grezia, S. Esposito, A. Naddeo
We give a straightforward generalization of the Ginzburg-Landau theory for superconductors where the scalar phase field is replaced by an antisymmetric Kalb-Ramond field. We predic…