Results 21 to 30 of about 1,372,703 (368)
Floquet Second-Order Topological Insulators from Nonsymmorphic Space-Time Symmetries. [PDF]
Physical Review Letters, 2018 We propose a systematic way of constructing Floquet second-order topological insulators (SOTIs) based on time-glide symmetry, a nonsymmorphic space-time symmetry that is unique in Floquet systems.
Yang Peng, G. Refael
semanticscholar +1 more source
Floquet higher-order topological insulators and superconductors with space-time symmetries [PDF]
Physical Review Research, 2019 Floquet higher-order topological insulators and superconductors (HOTI/SCs) with an order-two space-time symmetry or antisymmetry are classified. This is achieved by considering unitary loops, whose nontrivial topology leads to the anomalous Floquet ...
Yang Peng
semanticscholar +1 more source
Colourful Poincaré symmetry, gravity and particle actions
Journal of High Energy Physics, 2021 We construct a generalisation of the three-dimensional Poincaré algebra that also includes a colour symmetry factor. This algebra can be used to define coloured Poincaré gravity in three space-time dimensions as well as to study generalisations of ...
Joaquim Gomis +3 more
doaj +1 more source
Supersymmetric space-time symmetry breaking sources [PDF]
Journal of High Energy Physics, 2021 Abstract We construct new families of deformed supersymmetric field theories which break space-time symmetries but preserve half of the original supersymmetry. We do this by writing deformations as couplings to background multiplets.
Anderson, Louise, Roberts, Matthew
openaire +3 more sources
Dyson’s classification and real division superalgebras
Journal of High Energy Physics, 2021 It is well-known that unitary irreducible representations of groups can be usefully classified in a 3-fold classification scheme: Real, Complex, Quaternionic.
Roman Geiko, Gregory W. Moore
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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
Michael Tsamparlis +1 more
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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 +2 more
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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 +2 more
doaj +1 more source
Violations of discrete space-time symmetries in chiral effective field theory [PDF]
, 2015 We review recent progress in the theoretical description of the violation of discrete space-time symmetries in hadronic and nuclear systems. We focus on parity-violating and time-reversal-conserving interactions which are induced by the Standard Model ...
J. Vries, U. Meissner
semanticscholar +1 more source
Data‐driven performance metrics for neural network learning
International Journal of Adaptive Control and Signal Processing, EarlyView., 2023 Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri +2 more
wiley +1 more source