Results 41 to 50 of about 1,372,703 (368)
Space-time origin of gauge symmetry
Physica Scripta, 2023 Abstract In this work, by a first principles calculation, we show that quantum states describing massive relativistic free spinning particles obey kinematical conditions whose origin can be traced to parity as a good quantum number.
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Is space-time symmetry a suitable generalization of parity-time symmetry? [PDF]
Annals of Physics, 2014 We discuss space-time symmetric Hamiltonian operators of the form $% H=H_{0}+igH^{\prime}$, where $H_{0}$ is Hermitian and $g$ real. $H_{0}$ is invariant under the unitary operations of a point group $G$ while $H^{\prime}$ is invariant under transformation by elements of a subgroup $G^{\prime}$ of $G$.
Amore, Paolo +2 more
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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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Space-time Symmetries and Simple Superalgebras [PDF]
Fortschritte der Physik, 2001 8 pages, Contribution to the Proceedings of the First Workshop of the RTN Network "The Quantum structure of spacetime and the geometric nature of fundamental interactions", Berlin, Germany, 4-10 October ...
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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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Open strings in the plane wave background I: Quantization and symmetries [PDF]
, 2002 We systematically investigate open strings in the plane wave background of type IIB string theory. We carefully analyze possible boundary conditions for open strings and find static as well as time-dependent branes.
Skenderis, Kostas, Taylor, Marika
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Modular Hamiltonian for de Sitter diamonds
Journal of High Energy Physics, 2023 We determine the Tomita-Takesaki modular data for CFTs in double cone and light cone regions in conformally flat spacetimes. This includes in particular the modular Hamiltonian for diamonds in the de Sitter spacetime.
Markus B. Fröb
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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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On the Embedding of Space-Time Symmetries into Simple Superalgebras [PDF]
Letters in Mathematical Physics, 2001 We explore the embedding of Spin groups of arbitrary dimension and signature into simple superalgebras in the case of extended supersymmetry. The R-symmetry, which generically is not compact, can be chosen compact for all the cases that are congruent mod 8 to the physical conformal algebra so($D-2$,2), $D\geq 3$.
D'AURIA, RICCARDO +2 more
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Lie algebra expansions, non-relativistic matter multiplets and actions
Journal of High Energy Physics, 2022 We discuss a general methodology to provide rigid, off-shell matter multiplets and actions for recently constructed non-relativistic superalgebras. The technique is based on the Lie algebra expansion, which, in the context of supersymmetry, has so far ...
Oguzhan Kasikci, Mehmet Ozkan
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