Results 21 to 30 of about 219,853 (288)
Journal of High Energy Physics, 2019 We classify N =1 d = 4 kinematical and aristotelian Lie superalgebras with spa- tial isotropy, but not necessarily parity nor time-reversal invariance. Employing a quater- nionic formalism which makes rotational covariance manifest and simplifies many of
José Figueroa-O’Farrill, Ross Grassie
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Discrete space-time symmetries [PDF]
Czechoslovak Journal of Physics, 1993 Symmetries have always fascinated human beings; they are found in nature, art, and architecture. Physicists, like other scientists have often used symmetries as a basis of their understanding of nature. When the dynamics is unknown, symmetries serve to delineate and define it. When the dynamics is known, symmetries are used to study structure.
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Journal of High Energy Physics, 2021 We investigate the asymptotic symmetry group of a scalar field minimally-coupled to an abelian gauge field using the Hamiltonian formulation. This extends previous work by Henneaux and Troessaert on the pure electromagnetic case.
Roberto Tanzi, Domenico Giulini
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A note on the asymptotic symmetries of electromagnetism
Journal of High Energy Physics, 2023 We extend the asymptotic symmetries of electromagnetism in order to consistently include angle-dependent u(1) gauge transformations ϵ that involve terms growing at spatial infinity linearly and logarithmically in r, ϵ ~ a(θ, φ)r + b(θ, φ) ln r + c(θ, φ).
Oscar Fuentealba +2 more
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Asymptotic symmetries of electromagnetism at spatial infinity
Journal of High Energy Physics, 2018 We analyse the asymptotic symmetries of Maxwell theory at spatial infinity through the Hamiltonian formalism. Precise, consistent boundary conditions are explicitly given and shown to be invariant under asymptotic angle-dependent u(1)-gauge ...
Marc Henneaux, Cédric Troessaert
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Residual gauge symmetry in light-cone electromagnetism
Journal of High Energy Physics, 2023 We analyze the residual gauge freedom in light-cone electromagnetism in four dimensions. The standard boundary conditions involved in the so-called lc 2 formalism, which contains only the two physical degrees of freedom, allow for a subset of residual ...
Sucheta Majumdar
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Scalar field theory in Snyder space-time: alternatives [PDF]
, 2010 We construct two types of scalar field theory on Snyder space-time. The first one is based on the natural momenta addition inherent to the coset momentum space. This construction uncovers a non-associative deformation of the Poincar\'e symmetries.
Girelli, Florian, Livine, Etera R.
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Coherent ratchets in driven Bose-Einstein condensates [PDF]
, 2009 We study the response of a Bose-Einstein condensate to an unbiased periodic driving potential. By controlling the space and time symmetries of the driving we show how a directed current can be induced, producing a coherent quantum ratchet.
Creffield, C. E., Sols, F.
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Multipole charge conservation and implications on electromagnetic radiation
Journal of High Energy Physics, 2017 It is shown that conserved charges associated with a specific subclass of gauge symmetries of Maxwell electrodynamics are proportional to the well known electric mul-tipole moments.
Ali Seraj
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't Hooft Anomaly Matching Conditions for Generalized Symmetries in 2D [PDF]
, 1997 The 't Hooft anomaly matching conditions are a standard tool to study and test non-perturbative issues in quantum field theory. We give a new, simple proof of the anomaly matching conditions in 2D Poincare` invariant theories.
't Hooft +26 more
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