Results 11 to 20 of about 219,853 (288)
Global Symmetries of Noncommutative Space-time [PDF]
Physical Review D, 2005 The global counterpart of infinitesimal symmetries of noncommutative space-time is discussed.Comment: 7 pages, no figures; minor changes in the bibliography; final version accepted for publication in Phys. Rev.
C. Gonera +6 more
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Tunable transport with broken space–time symmetries [PDF]
Physics Reports, 2014 Transport properties of particles and waves in spatially periodic structures that are driven by external time-dependent forces manifestly depend on the space-time symmetries of the corresponding equations of motion. A systematic analysis of these symmetries uncovers the conditions necessary for obtaining directed transport.
Denisov, Sergey Vadimovich +2 more
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Phonon-induced Floquet topological phases protected by space-time symmetries
Physical Review Research, 2020 For systems with spatial and nonspatial symmetries, the topological classification depends not only on these symmetries but also on the commutation/anticommutation relations between spatial and nonspatial symmetries.
Swati Chaudhary +3 more
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Duality Symmetric Actions with Manifest Space-Time Symmetries [PDF]
Physical Review D, 1995 We consider a space-time invariant duality symmetric action for a free Maxwell field and an $SL(2,{\bf R})\times SO(6,22)$ invariant effective action describing a low-energy bosonic sector of the heterotic string compactified on a six-dimensional torus ...
Pasti, Paolo +2 more
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Space-time Schrödinger symmetries of a post-Galilean particle
Journal of High Energy Physics, 2020 We study the space-time symmetries of the actions obtained by expanding the action for a massive free relativistic particle around the Galilean action [1]. We obtain all the point space-time symmetries of the post-Galilean actions by working in canonical
Carles Batlle, Joaquim Gomis
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Symmetries of Bianchi I space–times [PDF]
Journal of Mathematical Physics, 2000 All diagonal proper Bianchi I space–times are determined which admit certain important symmetries. It is shown that for Homothetic motions, Conformal motions and Kinematic Self-Similarities the resulting space–times are defined explicitly in terms of a set of parameters, whereas Affine Collineations, Ricci Collineations, and Curvature Collineations, if
Tsamparlis, M, Apostolopoulos, PS
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(Re-)Inventing the Relativistic Wheel: Gravity, Cosets, and Spinning Objects [PDF]
, 2014 Space-time symmetries are a crucial ingredient of any theoretical model in physics. Unlike internal symmetries, which may or may not be gauged and/or spontaneously broken, space-time symmetries do not admit any ambiguity: they are gauged by gravity, and ...
Delacretaz, Luca V. +4 more
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Quantum Deformations of Einstein's Relativistic Symmetries [PDF]
, 2006 We shall outline two ways of introducing the modification of Einstein's relativistic symmetries of special relativity theory - the Poincar\'{e} symmetries.
Lukierski, Jerzy
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Tensors and spinors in de Sitter space
Journal of High Energy Physics, 2022 We construct the Wightman function for symmetric traceless tensors and Dirac fermions in dS d+1 in a coordinate and index free formalism using a d + 2 dimensional ambient space. We expand the embedding space formalism to cover spinor and tensor fields in
Ben Pethybridge, Vladimir Schaub
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Simple Space-Time Symmetries: Generalizing Conformal Field Theory [PDF]
, 2006 We study simple space-time symmetry groups G which act on a space-time manifold M=G/H which admits a G-invariant global causal structure. We classify pairs (G,M) which share the following additional properties of conformal field theory: 1) The stability ...
Cornwell J. F. +14 more
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