On scalar and vector fields coupled to the energy-momentum tensor
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep05(2018)100
Abstract: A bstractWe consider theories for scalar and vector fields coupled to the energy-momentum tensor. Since these fields also carry a non-trivial energy-momentum tensor, the coupling prescription generates self-interactions. In analogy with gravity theories, we build… read more here.
Keywords: energy momentum; momentum tensor; vector fields; energy ... See more keywords
Energy-momentum tensor of a ferromagnet
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.224401
Abstract: The energy-momentum tensor of a ferromagnet derived according to the standard prescription of Noether's theorem has a major flaw: the term originating from the spin Berry phase is gauge-dependent. As a consequence, some physical quantities… read more here.
Keywords: energy; energy momentum; momentum tensor; tensor ... See more keywords
Second-order effective energy-momentum tensor of gravitational scalar perturbations with perfect fluid
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.043531
Abstract: We investigate the second-order gravitational scalar perturbations for a barotropic fluid. We derive the effective energy-momentum tensor described by the quadratic terms of the gravitational and the matter perturbations. We show that the second-order effective… read more here.
Keywords: effective energy; momentum tensor; energy; energy momentum ... See more keywords
Two-loop renormalization and mixing of gluon and quark energy-momentum tensor operators
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.103.014515
Abstract: In this paper, we present one- and two-loop results for the renormalization of the gluon and quark gauge-invariant operators which appear in the definition of the QCD energy-momentum tensor, in dimensional regularization. To this end,… read more here.
Keywords: gluon quark; renormalization; two loop; momentum tensor ... See more keywords
Induced energy-momentum tensor in de Sitter scalar QED and its implication for induced currents
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review D"
DOI: 10.1103/physrevd.107.125001
Abstract: The aim of this research is to investigate the vacuum energy-momentum tensor of a quantized, massive, nonminimally coupled scalar field induced by a uniform electric field background in a four-dimensional de Sitter spacetime ($\dsf$). We… read more here.
Keywords: energy momentum; momentum tensor; induced energy;
Trace of the energy-momentum tensor and macroscopic properties of neutron stars
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.064057
Abstract: A generic feature of scalar extensions of general relativity is the coupling of the scalar degrees of freedom to the trace $T$ of the energy-momentum tensor of matter fields. Interesting phenomenology arises when the trace… read more here.
Keywords: energy; energy momentum; momentum tensor; tensor ... See more keywords
Energy-momentum tensor and metric near the Schwarzschild sphere
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.124014
Abstract: Regularity of the horizon radius ${r}_{g}$ of a collapsing body constrains a limiting form of a spherically symmetric energy-momentum tensor near it. Its nonzero limit belongs to one of four classes that are distinguished only… read more here.
Keywords: tensor metric; momentum tensor; energy momentum; energy ... See more keywords
Energy–Momentum Tensor in the Relativistic Theory of Gravity
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Particles and Nuclei Letters"
DOI: 10.1134/s1547477118060067
Abstract: It has been shown that the following modification of the symmetric (Gilbert) total energy–momentum tensor (EMT) density $${t^{\mu v}} \to {t^{\mu v}} - \frac{{{m^2}}}{{16\pi G}}{\tilde \varphi ^{\mu v}}$$ leads to incorrect results in basic energetic… read more here.
Keywords: energy momentum; momentum tensor; tensor relativistic;
Theory of Spinors in Curved Space-Time
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DOI: 10.3390/sym13101931
Abstract: By means of Clifford Algebra, a unified language and tool to describe the rules of nature, this paper systematically discusses the dynamics and properties of spinor fields in curved space-time, such as the decomposition of… read more here.
Keywords: energy momentum; momentum tensor; space time; connection ... See more keywords