Results 61 to 70 of about 25,385,750 (231)
Comments on Noncommutative Sigma Models [PDF]
, 2002 We review the derivation of a noncommutative version of the nonlinear sigma model on $\CPn$ and it's soliton solutions for finite $\theta$ emphasizing the similarities it bears to the GMS scalar field theory.
D. Tong +24 more
core +2 more sources
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
doaj +1 more source
Science Translational Medicine, 2019 Sigma-1 receptor is a critical inhibitor of endoplasmic reticulum–driven inflammation and a potential therapeutic target in septic shock. Sigma-1 receptor subdues systemic inflammation Systemic inflammation can be lethal, as in the case of septic shock ...
Dorian A. Rosen +6 more
semanticscholar +1 more source
Sigma models for genuinely non-geometric backgrounds [PDF]
, 2015 A bstractThe existence of genuinely non-geometric backgrounds, i.e. ones without geometric dual, is an important question in string theory. In this paper we examine this question from a sigma model perspective.
A. Chatzistavrakidis +2 more
semanticscholar +1 more source
Deformations of T1,1 as Yang-Baxter sigma models [PDF]
Journal of High Energy Physics, 2014 We consider a family of deformations of T1,1 in the Yang-Baxter sigma model approach. We first discuss a supercoset description of T1,1, which makes manifest the full symmetry of the space and leads to the standard Sasaki-Einstein metric.
P. M. Crichigno +2 more
semanticscholar +1 more source
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.
openaire +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
openaire +6 more sources