Results 41 to 50 of about 1,518,477 (199)
Supergravity solution-generating techniques and canonical transformations of σ-models from O(D, D)
Journal of High Energy Physics, 2021 Within the framework of the flux formulation of Double Field Theory (DFT) we employ a generalised Scherk-Schwarz ansatz and discuss the classification of the twists that in the presence of the strong constraint give rise to constant generalised fluxes ...
Riccardo Borsato, Sibylle Driezen
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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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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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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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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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N=2 Supersymmetric Sigma Models and D-branes
, 2004 We study D-branes of N=2 supersymmetric sigma models. Supersymmetric nonlinear sigma models with 2-dimensional target space have D0,D1,D2-branes, which are realized as A-,B-type supersymmetric boundary conditions on the worldsheet.
C. Bachas +8 more
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Grassmannian heterotic sigma model [PDF]
Physical Review D, 2019 21 pages, 6 ...
Kreshchuk, Michael +2 more
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Dual Pairs of Gauged Linear Sigma Models and Derived Equivalences of Calabi-Yau threefolds
, 2017 In this work we study the phase structure of skew symplectic sigma models, which are a certain class of two-dimensional N = (2,2) non-Abelian gauged linear sigma models.
Gerhardus, Andreas, Jockers, Hans
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NONLINEAR SIGMA MODEL ON CONIFOLDS [PDF]
Modern Physics Letters A, 2002 Explicit solutions to the conifold equations with complex dimension n = 3, 4 in terms of complex coordinates (fields) are employed to construct the Ricci-flat Kähler metrics on these manifolds. The Kähler two-forms are found to be closed. The complex realization of these conifold metrics are used in the construction of two-dimensional nonlinear sigma ...
Parthasarathy, R., Viswanathan, K. S.
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