Absorption and radiation of nonminimally coupled scalar field from charged BTZ black hole
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DOI: 10.1007/s10714-018-2396-y
Abstract: In this paper we investigate the absorption and radiation of nonminimally coupled scalar field from the charged BTZ black hole. We find the analytical expressions for the reflection coefficient, the absorption cross section and the… read more here.
Keywords: absorption; coupled scalar; nonminimally coupled; scalar field ... See more keywords
Entropy of black holes coupled to a scalar field
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DOI: 10.1103/physrevd.107.104022
Abstract: The Hamiltonian approach to black hole entropy, recently proposed in the framework of Poincar\'e gauge theory, is extended by including the scalar matter. The improved approach is used to analyse asymptotic charges and entropy of… read more here.
Keywords: scalar field; coupled scalar; holes coupled; entropy black ... See more keywords
Classes of nonminimally coupled scalar fields in spatially curved FRW spacetimes
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DOI: 10.1103/physrevd.99.123516
Abstract: In this work we perform a dynamical analysis of a broad class of non-minimally coupled real scalar fields in the Friedmann-Robertson-Walker (FRW) spacetime framework. The first part of our study concerns the dynamics of an… read more here.
Keywords: nonminimally coupled; coupled scalar; scalar fields; classes nonminimally ... See more keywords
Scalar charges and pulsar-timing observables in the presence of nonminimally coupled scalar fields
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DOI: 10.1103/physrevd.99.124003
Abstract: Pulsar-timing has become a celebrated tool for probing modifications to General Relativity in the strong-field surroundings of neutron stars. Here we investigate whether scalar-tensor theories that incorporate a nonminimally coupled scalar degree of freedom may… read more here.
Keywords: nonminimally coupled; presence; coupled scalar; charges pulsar ... See more keywords
Displacement Convexity in Spatially Coupled Scalar Recursions
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DOI: 10.1109/tit.2018.2864728
Abstract: We introduce a technique for the analysis of general spatially coupled systems that are governed by scalar recursions. Such systems can be expressed in variational form in terms of a potential function. We show, under… read more here.
Keywords: spatially coupled; coupled scalar; convexity spatially; displacement convexity ... See more keywords