Results 31 to 40 of about 1,372,703 (368)
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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Space-time symmetries and the Yang-Mills gradient flow [PDF]
Journal of High Energy Physics, 2013 The recent introduction of the gradient flow has provided a new tool to probe the dynamics of quantum field theories. The latest developments have shown how to use the gradient flow for the exploration of symmetries, and the definition of the ...
L. Debbio, A. Patella, A. Rago
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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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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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Asymptotic symmetries of Yang-Mills fields in Hamiltonian formulation
Journal of High Energy Physics, 2020 We investigate the asymptotic symmetry group of the free SU(N )-Yang-Mills theory using the Hamiltonian formalism. We closely follow the strategy of Henneaux and Troessaert who successfully applied the Hamiltonian formalism to the case of gravity and ...
Roberto Tanzi, Domenico Giulini
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International Journal of Modern Physics D, 2016 The equations of Hamiltonian gravity are often considered ugly cousins of the elegant and manifestly covariant versions found in the Lagrangian theory. However, both formulations are fundamental in their own rights because they make different statements about the nature of spacetime and its symmetries.
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Journal of High Energy Physics, 2023 The asymptotic symmetries of electromagnetism in all higher spacetime dimensions d > 4 are extended, by incorporating consistently angle-dependent u(1) gauge transformations with a linear growth in the radial coordinate at spatial infinity. Finiteness of
Oscar Fuentealba
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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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Conformal symmetry and quantum localization in space-time [PDF]
AIP Conference Proceedings, 2007 The classical procedures which define the relativistic notion of space-time can be implemented in the framework of Quantum Field Theory. Only relying on the conformal symmetries of field propagation, time-frequency transfer and localization lead to the definition of time-frequency references and positions in space-time as quantum observables.
Marc-Thierry Jaekel +5 more
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Gauss’ Law and string-localized quantum field theory
Journal of High Energy Physics, 2020 The quantum Gauss Law as an interacting field equation is a prominent feature of QED with eminent impact on its algebraic and superselection structure. It forces charged particles to be accompanied by “photon clouds” that cannot be realized in the Fock ...
Jens Mund +2 more
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