Results 41 to 50 of about 809,200 (215)
βγ-systems interacting with sigma-models
Journal of High Energy Physics, 2020 We find a geometric description of interacting βγ-systems as a null Kac-Moody quotient of a nonlinear sigma-model for systems with varying amounts of supersymmetry.
Ulf Lindström, Martin Roček
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Entanglement Entropy and Quantum Phase Transition in the O(N) σ-model
Journal of High Energy Physics, 2021 We investigate how entanglement entropy behaves in a non-conformal scalar field system with a quantum phase transition, by the replica method. We study the σ-model in 3+1 dimensions which is O(N) symmetric as the mass squared parameter μ 2 is positive ...
Jiunn-Wei Chen +2 more
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SUPERSYMMETRIC SIGMA MODELS [PDF]
, 1985 We begin to construct the most general supersymmetric Lagrangians in one, two and four dimensions. We find that the matter couplings have a natural interpretation in the language of the nonlinear sigma model.
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T-duality in (2, 1) superspace
Journal of High Energy Physics, 2019 We find the T-duality transformation rules for 2-dimensional (2,1) supersymmetric sigma-models in (2,1) superspace. Our results clarify certain aspects of the (2,1) sigma model geometry relevant to the discussion of T-duality.
M. Abou-Zeid +3 more
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Sigma-model symmetry in orientifold models [PDF]
Journal of High Energy Physics, 2000 We investigate in the simplest compact D=4 N=1 Type IIB orientifold models the sigma-model symmetry suggested by the proposed duality of these models to heterotic orbifold vacua. This symmetry is known to be present at the classical level, and is associated to a composite connection involving untwisted moduli in the low-energy supergravity theory.
Scrucca CA, Serone, Marco
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Grassmannian heterotic sigma model [PDF]
Physical Review D, 2019 21 pages, 6 ...
Kreshchuk, Michael +2 more
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Anderson localization in sigma models
EPJ Web of Conferences, 2018 In QCD above the chiral restoration temperature there exists an Anderson transition in the fermion spectrum from localized to delocalized modes. We investigate whether the same holds for nonlinear sigma models which share properties like dynamical mass ...
Bruckmann Falk, Wellnhofer Jacob
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Gauged sigma models and magnetic Skyrmions
SciPost Physics, 2019 We define a gauged non-linear sigma model for a 2-sphere valued field and a $SU(2)$ connection on an arbitrary Riemann surface whose energy functional reduces to that for critically coupled magnetic skyrmions in the plane, with arbitrary ...
Bernd J Schroers
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Orbifolds by 2-groups and decomposition
Journal of High Energy Physics, 2022 In this paper we study three-dimensional orbifolds by 2-groups with a trivially-acting one-form symmetry group BK. These orbifolds have a global two-form symmetry, and so one expects that they decompose into (are equivalent to) a disjoint union of other ...
Tony Pantev +3 more
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Topological massive sigma models [PDF]
Nuclear Physics B, 1995 20 pages, Phyzzx. Revised version to appear in Nucl. Phys. B.
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