Results 21 to 30 of about 1,518,477 (199)
Noncommutative linear sigma models [PDF]
Nuclear Physics B, 2001 We examine noncommutative linear sigma models with U(N) global symmetry groups at the one-loop quantum level, and contrast the results with our previous study of the noncommutative O(N) linear sigma models where we have shown that Nambu-Goldstone symmetry realization is inconsistent with continuum renormalization.
Campbell, Bruce A., Kaminsky, Kirk
openaire +2 more sources
Self-dual supersymmetric nonlinear sigma models [PDF]
, 2013 In four-dimensional N=1 Minkowski superspace, general nonlinear sigma models with four-dimensional target spaces may be realised in term of CCL (chiral and complex linear) dynamical variables which consist of a chiral scalar, a complex linear scalar and ...
Kuzenko, S. M., McArthur, I. N.
core +1 more source
Non-compact nonlinear sigma models
Physics Letters B, 2016 The target space of a nonlinear sigma model is usually required to be positive definite to avoid ghosts. We introduce a unique class of nonlinear sigma models where the target space metric has a Lorentzian signature, thus the associated group being non ...
Claudia de Rham +2 more
doaj +1 more source
Junctions of mass-deformed nonlinear sigma models on SO(2N)/U(N) and Sp(N)/U(N). Part II
Journal of High Energy Physics, 2020 We construct three-pronged junctions of mass-deformed nonlinear sigma models on SO(2N)/U(N) and Sp(N )/U(N ) for generic N. We study the nonlinear sigma models on the Grassmann manifold or on the complex projective space.
Taegyu Kim, Sunyoung Shin
doaj +1 more source
Integrable sigma models and perturbed coset models [PDF]
, 2001 Sigma models arise frequently in particle physics and condensed-matter physics as low-energy effective theories. In this paper I compute the exact free energy at any temperature in two hierarchies of integrable sigma models in two dimensions.
Fendley, Paul
core +2 more sources
Integrable coupled sigma-models [PDF]
, 2018 5 pages, examples ...
Delduc, Francois +3 more
openaire +3 more sources
Nonlinear Grassmann Sigma Models in Any Dimension and An Infinite Number of Conserved Currents [PDF]
, 1998 We first consider nonlinear Grassmann sigma models in any dimension and next construct their submodels. For these models we construct an infinite number of nontrivial conserved currents.
Ferretti +9 more
core +2 more sources
Non-local non-linear sigma models
Journal of High Energy Physics, 2019 We study non-local non-linear sigma models in arbitrary dimension, focusing on the scale invariant limit in which the scalar fields naturally have scaling dimension zero, so that the free propagator is logarithmic.
Steven S. Gubser +4 more
doaj +1 more source
A Novel Symmetry in Sigma Models [PDF]
, 1996 A class of non-linear sigma models possessing a new symmetry is identified. The same symmetry is also present in Chern-Simons theories. This hints at a possible topological origin for this class of sigma models.
Ahn +32 more
core +2 more sources
GAUGED HETEROTIC SIGMA-MODELS [PDF]
Modern Physics Letters A, 1994 The gauging of isometries in general sigma-models which include fermionic terms which represent the interaction of strings with background Yang-Mills fields is considered. Gauging is possible only if certain obstructions are absent. The quantum gauge anomaly is discussed, and then the (1, 0) supersymmetric generalization of the gauge action given.
openaire +3 more sources