Results 11 to 20 of about 5,915,931 (293)
On the energy–momentum tensor [PDF]
Journal of Physics A: Mathematical and General, 2004 We clarify the relation among canonical, metric and Belinfante's energy-momentum tensors for general tensor field theories. For any tensor field T, we define a new tensor field $\til {\bm T}$, in terms of which the Belinfante tensor is readily computed.
Gamboa Saravi, Ricardo Enrique
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The electromagnetic energy momentum tensor [PDF]
Journal of Physics A: Mathematical and General, 2002 We clarify the relation between canonical and metric energy-momentum tensors. In particular, we show that a natural definition arises from Noether's Theorem which directly leads to a symmetric and gauge invariant tensor for electromagnetic field theories on an arbitrary space-time of any dimension.
Gamboa Saraví, Ricardo Enrique
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The energy–momentum tensor(s) in classical gauge theories [PDF]
Nuclear Physics B, 2016 We give an introduction to, and review of, the energy–momentum tensors in classical gauge field theories in Minkowski space, and to some extent also in curved space–time.
Daniel N. Blaschke +3 more
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The gauge-invariant canonical energy-momentum tensor
EPJ Web of Conferences, 2016 The canonical energy-momentum tensor is often considered as a purely academic object because of its gauge dependence. However, it has recently been realized that canonical quantities can in fact be defined in a gauge-invariant way provided that strict ...
Lorcé Cédric
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Energy-Momentum Tensor Form Factors in QED [PDF]
SciPost Physics Proceedings, 2022 We present the results for the Energy-Momentum Tensor (EMT) form factor D(t) at oneloop accuracy in quantum electrodynamics for an electron state. We report the the results in the case of both zero and nonzero photon mass.
Simone Rodini, Andreas Metz, Barbara Pasquini
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The enigma of optical momentum in a medium [PDF]
, 2010 It is 100 years since Minkowski and Abraham first gave rival expressions for the momentum of light in a material medium. At the single-photon level, these correspond, respectively, either to multiplying or dividing the free-space value () by the ...
Loudon, Rodney, Barnett, Stephen M.
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Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2023 Creating a modified Belinfante/Rosenfeld procedure, Mathisson-Papapetrou-like equations are derived by which a comparison of General-Covariant Continuum Physics (GCCP) with General Relativity Theory (GRT) becomes possible.
Wolfgang Muschik
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On Sugawara construction on celestial sphere
Journal of High Energy Physics, 2020 Conformally soft gluons are conserved currents of the Celestial Conformal Field Theory (CCFT) and generate a Kac-Moody algebra. We study celestial amplitudes of Yang-Mills theory, which are Mellin transforms of gluon amplitudes and take the double soft ...
Wei Fan +3 more
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Covariant Derivative of Fermions and All That
Universe, 2022 We present detailed pedagogical derivation of covariant derivative of fermions and some related expressions, including commutator of covariant derivatives and energy-momentum tensor of a free Dirac field.
Ilya L. Shapiro
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Energy-momentum tensor from Wilson flow in lattice φ4-theory [PDF]
, 2017 The energy-momentum tensor (EMT) is the Noether current associated with translations. It is of interest because, first of all, it has physical meaning as it contains the energy density and the momentum density.
Ehret, Susanne
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