Results 21 to 30 of about 235,883 (239)

Minkowski and Galilei/Newton Fluid Dynamics: A Geometric 3 + 1 Spacetime Perspective

open access: yesFluids, 2018
A kinetic theory of classical particles serves as a unified basis for developing a geometric 3 + 1 spacetime perspective on fluid dynamics capable of embracing both Minkowski and Galilei/Newton spacetimes. Parallel treatment of these cases on as common a
Christian Cardall
doaj   +1 more source

Novel features of the energy momentum tensor of a Casimir apparatus in a weak gravitational field [PDF]

open access: yes, 2008
The influence of the gravity acceleration on the regularized energy-momentum tensor of the quantized electromagnetic field between two plane parallel conducting plates is derived.
Barton G   +9 more
core   +1 more source

Vacuum polarization of scalar field on Lie groups with Bi-invariant metric [PDF]

open access: yesКомпьютерные исследования и моделирование, 2015
We consider vacuum polarization of a scalar field on the Lie groups with a bi-invariant metric of Robertson-Walker type. Using the method of orbits we found expression for the vacuum expectation values of the energy-momentum tensor of the scalar field ...
Alexander Igorevich Breev   +1 more
doaj   +1 more source

Noncommutative Sugawara Construction [PDF]

open access: yes, 2015
The noncommutative extension of the Sugawara construction for free massless fermionic fields in two dimensions is studied. We prove that the equivalence of the noncommutative Sugawara energy-momentum tensor and symmetric energy-momentum tensor persists ...
Ghasemkhani, Masoumeh
core   +2 more sources

Proposal for the proper gravitational energy-momentum tensor

open access: yes, 2016
We propose a gravitational energy-momentum tensor of the general relativity obtained using Noethers theorem. It transforms as a tensor under general coordinate transformations.
Shimizu, Katsutaro
core   +1 more source

Note on the energy-momentum tensor for general mixed tensor-spinor fields

open access: yes, 2005
This note provides an explicit proof of the equivalence of the Belinfante's energy-momentum tensor and the metric energy-momentum tensor for general mixed tensor-spinor fields.Comment: 7 pages, title changed, typos corrected, accepted for publication in
Hong-Bao Zhang   +7 more
core   +1 more source

The gauge-invariant canonical energy-momentum tensor

open access: yesEPJ 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
doaj   +1 more source

Energy-Momentum Tensor for the Electromagnetic Field in a Dielectric

open access: yes, 2015
The total momentum of a thermodynamically closed system is unique, as is the total energy. Nevertheless, there is continuing confusion concerning the correct form of the momentum and the energy-momentum tensor for an electromagnetic field interacting ...
Antoci   +23 more
core   +1 more source

N=2 Supermultiplet of Currents and Anomalous Transformations in Supersymmetric Gauge Theory [PDF]

open access: yes, 1996
We examine some properties of supermultiplet consisting of the U(1)_{J} current, extended supercurrents, energy-momentum tensor and the central charge in N=2 supersymmetric Yang-Mills theory.
H. ITOYAMA   +3 more
core   +2 more sources

Monopole and quadrupole contributions to the angular momentum density

open access: yesPhysics Letters B, 2019
The energy-momentum tensor form factors contain a wealth of information about the nucleon. It is insightful to visualize this information in terms of 3D or 2D densities related by Fourier transformations to the form factors. The densities associated with
Peter Schweitzer, Kemal Tezgin
doaj   +1 more source

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