Results 1 to 10 of about 23,553,376 (354)

Floquet group theory and its application to selection rules in harmonic generation. [PDF]

open access: yesNat Commun, 2019
Symmetry is one of the most generic and useful concepts in science, often leading to conservation laws and selection rules. Here we formulate a general group theory for dynamical symmetries (DSs) in time-periodic Floquet systems, and derive their ...
Neufeld O, Podolsky D, Cohen O.
europepmc   +3 more sources

Oxidation = group theory [PDF]

open access: yesClassical and Quantum Gravity, 2002
Dimensional reduction of theories involving (super-)gravity gives rise to sigma models on coset spaces of the form G/H, with G a non-compact group, and H its maximal compact subgroup.
Arjan Keurentjes   +10 more
core   +5 more sources

Critical Phenomena and Renormalization-Group Theory [PDF]

open access: yes, 2002
We review results concerning the critical behavior of spin systems at equilibrium. We consider the Ising and the general O($N$)-symmetric universality classes, including the $N\to 0$ limit that describes the critical behavior of self-avoiding walks.
Pelissetto, Andrea, Vicari, Ettore
core   +5 more sources

Almost group theory

open access: yesJournal of Algebra, 2015
The notion of almost centralizer and almost commutator are introduced and basic properties are established. They are used to study $\widetilde{\mathfrak M}\_c$-groups, i.
Hempel, Nadja
core   +4 more sources

Discrete symmetries and efficient counting of operators

open access: yesJournal of High Energy Physics, 2023
We present DECO (“Discrete and Efficient Counting of Operators”), an implementation of the Hilbert series to enumerate subleading operator bases for SMEFT-like EFTs with symmetry groups as typically found in flavour and BSM physics.
Simon Calò   +2 more
doaj   +1 more source

One-loop jet functions by geometric subtraction

open access: yesJournal of High Energy Physics, 2020
In factorization formulae for cross sections of scattering processes, final-state jets are described by jet functions, which are a crucial ingredient in the resummation of large logarithms.
Avanish Basdew-Sharma   +3 more
doaj   +1 more source

The Hopf algebra structure of the R∗-operation

open access: yesJournal of High Energy Physics, 2020
We give a Hopf-algebraic formulation of the R ∗ -operation, which is a canonical way to render UV and IR divergent Euclidean Feynman diagrams finite. Our analysis uncovers a close connection to Brown’s Hopf algebra of motic graphs.
Robert Beekveldt   +2 more
doaj   +1 more source

Towards double parton distributions from first principles using Large Momentum Effective Theory

open access: yesJournal of High Energy Physics, 2023
In double parton scattering (DPS), two partonic collisions take place between one pair of colliding hadrons. The effect of DPS can be significant for precision measurements due to the additional radiation from secondary partonic collisions, and ...
Max Jaarsma   +2 more
doaj   +1 more source

Testability in group theory

open access: yesIsrael Journal of Mathematics, 2023
AbstractThis paper is a journal counterpart to [5], in which we initiate the study of property testing problems concerning a finite system of relations E between permutations, generalizing the study of stability in permutations. To every such system E, a group Γ = ΓE is associated and the testability of E depends only on Γ (just like in Galois theory ...
Becker, Oren   +2 more
openaire   +2 more sources

Color Centers in Hexagonal Boron Nitride Monolayers: A Group Theory and Ab Initio Analysis [PDF]

open access: yes, 2017
We theoretically study physical properties of the most promising color center candidates for the recently observed single-photon emissions in hexagonal boron nitride (h-BN) monolayers.
M. Abdi, J. Chou, Á. Gali, M. Plenio
semanticscholar   +1 more source

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