Results 11 to 20 of about 18,697,974 (254)

The fermionic signature operator and space-time symmetries [PDF]

open access: yesAdvances in Theoretical and Mathematical Physics, 2018
We show that and specify how space-time symmetries give rise to corresponding symmetries of the fermionic signature operator and generalized fermionic projector states.
Finster, Felix, Reintjes, Moritz
openaire   +3 more sources

Phonon-induced Floquet topological phases protected by space-time symmetries

open access: yesPhysical 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
doaj   +2 more sources

Space-time Schrödinger symmetries of a post-Galilean particle [PDF]

open access: yesJournal 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
doaj   +2 more sources

QUANTUM SPACE-TIME: DEFORMED SYMMETRIES VERSUS BROKEN SYMMETRIES [PDF]

open access: yesCPT and Lorentz Symmetry, 2002
LaTex, 7 pages, talk given at the 2nd Meeting on CPT and Lorentz Symmetry (CPT 01), Bloomington, Indiana, 15-18 Aug ...
GIOVANNI AMELINO-CAMELIA   +1 more
openaire   +4 more sources

ON THE SPACE–TIME SYMMETRIES OF NONCOMMUTATIVE GAUGE THEORIES [PDF]

open access: yesInternational Journal of Modern Physics A, 2002
We study the space–time symmetries and transformation properties of the non-commutative U(1) gauge theory, by using Noether charges. We carry out our analysis by keeping an open view on the possible ways θμν could transform. Since the theory is not invariant under the conformal transformations, with the only exception of space–time translations, we ...
Iorio, A., Sýkora, T.
openaire   +4 more sources

GHOST COHOMOLOGIES AND HIDDEN SPACE–TIME SYMMETRIES [PDF]

open access: yesInternational Journal of Modern Physics A, 2007
We observe and study new nonlinear global space–time symmetries of the full ghost + matter action of RNS superstring theory. We show that these surprising new symmetries are generated by the special worldsheet currents (physical vertex operators) of RNS superstring theory, violating the equivalence of superconformal ghost pictures.
DIMITRI POLYAKOV, Polyakov D.
openaire   +4 more sources

Plan permutation symmetries as a source of inefficiency in planning [PDF]

open access: yes, 2003
This paper briefly reviews sources of symmetry in planning and highlights one source that has not previously been tackled:plan permutation symmetry.
Long, D., Fox, M.
core   +3 more sources

Representations of sl(2,?) in category O and master symmetries [PDF]

open access: yes, 2015
We show that the indecomposable sl(2,?)-modules in the Bernstein-Gelfand-Gelfand category O naturally arise for homogeneous integrable nonlinear evolution systems. We then develop a new approach called the O scheme to construct master symmetries for such
J. P. Wang, Wang, Jing Ping
core   +1 more source

Tensors and spinors in de Sitter space

open access: yesJournal 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
doaj   +1 more source

Discrete space-time symmetries [PDF]

open access: yes, 1992
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.
Henley, Ernest M.
core   +2 more sources

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