Results 41 to 50 of about 955,385 (170)

Jet veto resummation with jet rapidity cuts

open access: yesJournal of High Energy Physics, 2019
Jet vetoes are widely used in experimental analyses at the LHC to distinguish different hard-interaction processes. Experimental jet selections require a cut on the (pseudo)rapidity of reconstructed jets, |η jet| ≤ η cut.
Johannes K. L. Michel   +2 more
doaj   +1 more source

Bootstrapping line defects in N $$ \mathcal{N} $$ = 2 theories

open access: yesJournal of High Energy Physics, 2020
We study half-BPS line defects in N $$ \mathcal{N} $$ = 2 superconformal theories using the bootstrap approach. We concentrate on local excitations constrained to the defect, which means the system is a 1d defect CFT with osp(4∗ |2) symmetry. In order to
Aleix Gimenez-Grau, Pedro Liendo
doaj   +1 more source

Singularities of eight- and nine-particle amplitudes from cluster algebras and tropical geometry

open access: yesJournal of High Energy Physics, 2021
We further exploit the relation between tropical Grassmannians and Gr(4, n) cluster algebras in order to make and refine predictions for the singularities of scattering amplitudes in planar N $$ \mathcal{N} $$ = 4 super Yang-Mills theory at higher ...
Niklas Henke, Georgios Papathanasiou
doaj   +1 more source

Groups in Simple Theories

open access: yes, 2005
Groups definable in simple theories retain the chain conditions and decomposition properties known from stable groups, up to commensurability. In the small case, if a generic type of G is not foreign to some type q, there is a q-internal quotient. In the supersimple case, the Berline-Lascar decomposition works.
openaire   +2 more sources

A theory of group selection. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1975
In organisms possessing a dispersal phase the processes of mating, competition, feeding, and predation are often carried out within "trait-groups," defined as populations enclosed in areas smaller than the boundaries of the deme. A simple model shows that this can lead to the selection of "altruistic" traits that favor the fitness of the group over ...
openaire   +3 more sources

Bootstrapping monodromy defects in the Wess-Zumino model

open access: yesJournal of High Energy Physics, 2022
We use analytical bootstrap techniques to study supersymmetric monodromy defects in the critical Wess-Zumino model. In preparation for this result we first study two related systems which are interesting on their own: general monodromy defects (no susy),
Aleix Gimenez-Grau, Pedro Liendo
doaj   +1 more source

Natural Isomorphisms in Group Theory [PDF]

open access: yesProceedings of the National Academy of Sciences, 1942
The idea of a functor is introduced, in the context of group theory. By this means the notions of covariance and contravariance in group theory, topology, etc., are made precise.
Eilenberg, Samuel, MacLane, Saunders
openaire   +4 more sources

The R *-operation for Feynman graphs with generic numerators

open access: yesJournal of High Energy Physics, 2017
The R *-operation by Chetyrkin, Tkachov, and Smirnov is a generalisation of the BPHZ R-operation, which subtracts both ultraviolet and infrared divergences of euclidean Feynman graphs with non-exceptional external momenta.
Franz Herzog, Ben Ruijl
doaj   +1 more source

Correspondences and the Theory of Groups [PDF]

open access: yesTransactions of the American Mathematical Society, 1906
The object of this paper is to bring together several points connected with the general theory of correspondences and continuous groups, and to apply them to the theory of screws. Although the several results are in general not new, it seems of interest to give the accompanying presentation of the subject, as it furnishes an excellent examiple of the ...
openaire   +1 more source

MORITA'S THEORY FOR THE SYMPLECTIC GROUPS [PDF]

open access: yesInternational Journal of Number Theory, 2011
We construct and study the holomorphic discrete series representations and the principal series representations of the symplectic group Sp (2n, F) over a p-adic field F as well as a duality between some sub-representations of these two representations. The constructions of these two representations generalize those defined in Morita and Murase's works.
Qi, Zhi, Yang, Chang
openaire   +2 more sources

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