23 citations · 27 across the 28 of their papers we have counts for
15 papers · 1 filter
Gravitational capture cross-section in Zipoy-Voorhees spacetimes
Serzhan Momynov, Kuantay Boshkayev, Hernando Quevedo +5
We consider geodesics of massive and massless test particles in the gravitational field of a static and axisymmetric compact object described by the quadrupolar metric (-metric)…
Event horizons under the effect of the Penrose process
Hernando Quevedo
We investigate how test particles absorbed by a black hole affect the properties of the event horizon. We consider particles that arrive from infinity with positive energy and cros…
Spherically symmetric collapse: Initial configurations
Elly Bayona, Hernando Quevedo, Miguel Alcubierre
The initial state of the spherical gravitational collapse in general relativity has been studied with different methods, especially by using {\it a priori} given equations of state…
Time is entropy: A geometric proof
Hernando Quevedo
We analyze the equilibrium space of an ideal gas using the formalism of geometrothermodynamics. We introduce the concept of thermodynamic geodesics to show that the equilibrium spa…
Smooth Functional Calculus and Spectral Theorem in Banach Spaces
Luis A. Cedeño-Pérez, Hernando Quevedo
The notion of projection families generalizes the classical notions of vector- and operator-valued measures. We show that projection families are general enough to extend the Spect…
A General Theory of Operator-Valued Measures
Luis A. Cedeño-Pérez, Hernando Quevedo
We construct a new kind of measures, called projection families, which generalize the classical notion of vector and operator-valued measures. The maximal class of reasonable funct…