Results 21 to 30 of about 219,185 (273)

A particle model with extra dimensions from coadjoint Poincaré symmetry

Journal of High Energy Physics, 2020
Starting from the coadjoint Poincaré algebra we construct a point particle relativistic model with an interpretation in terms of extra-dimensional variables.
Andrea Barducci, Roberto Casalbuoni, Joaquim Gomis   +2 more
doaj   +1 more source

Quantum Carroll/fracton particles

Journal of High Energy Physics, 2023
We classify and relate unitary irreducible representations (UIRs) of the Carroll and dipole groups, i.e., we define elementary quantum Carroll and fracton particles and establish a correspondence between them.
José Figueroa-O’Farrill, Alfredo Pérez, Stefan Prohazka   +2 more
doaj   +1 more source

Linearized off-shell 4+7 supergeometry of 11D supergravity

Journal of High Energy Physics, 2022
We describe the linearized supergeometry of eleven dimensional supergravity with four off-shell local supersymmetries. We start with a background Minkowski 11D, N=1 superspace, and an additional ingredient of a global, constant, G 2-structure which ...
Katrin Becker, Daniel Butter, Anindya Sengupta   +2 more
doaj   +1 more source

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
openaire   +4 more sources

Asymptotic O $$ \mathcal{O} $$ (r) gauge symmetries and gauge-invariant Poincaré generators in higher spacetime dimensions

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
doaj   +1 more source

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.
core   +3 more sources

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
doaj   +1 more source

Kinematical superspaces

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
doaj   +1 more source

Asymptotic symmetries of scalar electrodynamics and of the abelian Higgs model in Hamiltonian formulation

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
doaj   +1 more source

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.
core   +3 more sources