منابع مشابه
Information metric on instanton moduli spaces in nonlinear sigma models.
We study the information metric on instanton moduli spaces in two-dimensional nonlinear sigma models. In the CP1 model, the information metric on the moduli space of one instanton with the topological charge Q=k(k > or =1) is a three-dimensional hyperbolic metric, which corresponds to Euclidean anti-de Sitter space-time metric in three dimensions, and the overall scale factor of the information...
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چکیده ندارد.
15 صفحه اولExact classical solutions of nonlinear sigma models on supermanifolds
We study two-dimensional nonlinear sigma models with target spaces being the complex super Grassmannian manifolds, that is, coset supermanifolds G(m, p|n, q) ∼= U(m|n)/[U(p|q) ⊗ U(m − p|n − q)] for 0 ≤ p ≤ m, 0 ≤ q ≤ n and 1 ≤ p + q. The projective superspace CP is a special case of p = 1, q = 0. For the two-dimensional Euclidean base space, a wide class of exact classical solutions (or harmoni...
متن کاملSupersymmetric Nonlinear Sigma Models as Gauge Theories
Supersymmetric nonlinear sigma models are obtained from linear sigma models by imposing supersymmetric constraints. If we introduce auxiliary chiral and vector superfields, these constraints are expressed by D-terms and F-terms depending on the target manifolds. Auxiliary vector superfields appears as gauge fields without kinetic terms. If there is no D-term constraints, the target manifolds ar...
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Nonlinear sigma models (NLSM) in d = 3 have many interesting and nontrivial features, which were explored poorly in contrast with NLSM in d = 2 and d = 4. We present a few results from our study of the perturbative and non-pertubative properties of three-dimensional (3D) NLSM. i) We have shown that cancellation of ultra-violet (UV) divergences takes place in 3D extended (N = 2, 4) supersymmetri...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2012
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2012.03.073