86 citations · 2.6k across the 222 of their papers we have counts for
229 papers
On the nature of Bondi-Metzner-Sachs transformations
Zahra Mirzaiyan, Giampiero Esposito
This paper investigates first the four branches of BMS transformations, motivated by the classification into elliptic, parabolic, hyperbolic and loxodromic proposed a few years ago…
DeWitt boundary condition in one-loop quantum cosmology
Giampiero Esposito
DeWitt's suggestion that the wave function of the universe should vanish at the classical big-bang singularity is here considered within the framework of one-loop quantum cosmology…
Generating rotating black hole solutions by using the Cayley-Dickson construction
Zahra Mirzaiyan, Giampiero Esposito
This paper exploits the power of the Cayley-Dickson algebra to generate stationary rotating black hole solutions in one fell swoop. Specifically, we derive the nine-dimensional Mye…
Discontinuous normals in non-Euclidean geometries and two-dimensional gravity
Emmanuele Battista, Giampiero Esposito
This paper builds two detailed examples of generalized normal in non-Euclidean spaces, i.e. the hyperbolic and elliptic geometries. In the hyperbolic plane we define a n-sided hype…
Numerov and phase-integral methods for charmonium
Giampiero Esposito, Pietro Santorelli
This paper applies the Numerov and phase-integral methods to the stationary Schrodinger equation that studies bound states of charm anti-charm quarks. The former is a numerical met…
Geodesic motion in Euclidean Schwarzschild geometry
Emmanuele Battista, Giampiero Esposito
This paper performs a systematic investigation of geodesic motion in Euclidean Schwarzschild geometry, which is studied in the equatorial plane. The explicit form of geodesic motio…