Results 131 to 140 of about 25,385,750 (231)
Sigma models for quantum chaotic dynamics
, 2014 We review the construction of the supersymmetric sigma model for unitary maps, using the color- flavor transformation. We then illustrate applications by three case studies in quantum chaos. In two of these cases, general Floquet maps and quantum graphs,
Altland, Alexander +3 more
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, 2000 We investigate the Poisson-Sigma model on the classical and quantum level. In the classical analysis we show how this model includes various known two-dimensional field theories. Then we perform the calculation of the path integral in a general gauge, and demonstrate that the derived partition function reduces to the familiar form in the case of 2d ...
Hirshfeld, Allen C. +1 more
openaire +2 more sources
Tropical amplitudes for colored Lagrangians
Journal of High Energy PhysicsRecently a new formulation for scattering amplitudes in Tr(Φ3) theory has been given based on simple combinatorial ideas in the space of kinematic data.
Nima Arkani-Hamed +3 more
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Moduli spaces of instantons in flag manifold sigma models. Vortices in quiver gauge theories
Journal of High Energy PhysicsIn this paper, we discuss lumps (sigma model instantons) in flag manifold sigma models. In particular, we focus on the moduli space of BPS lumps in general Kähler flag manifold sigma models. Such a Kähler flag manifold, which takes the form U n 1 + ⋯ + n
Toshiaki Fujimori +2 more
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Nuclear Physics BWe construct an integrable sigma model with a generalized F structure, which involves a generalized Nijenhuis structure J satisfying J3=−J. Utilizing the expression of the generalized complex structure on the metric Lie group manifold G in terms of ...
A. Rezaei-Aghdam, A. Taghavi
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Circles and triangles, the NLSM and Tr(Φ3)
Journal of High Energy PhysicsA surprising connection has recently been made between the amplitudes for Tr(Φ3) theory and the non-linear sigma model (NLSM). A simple shift of kinematic variables naturally suggested by the associahedron/stringy representation of Tr(Φ3) theory yields ...
Nima Arkani-Hamed, Carolina Figueiredo
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Non-invertible symmetries of two-dimensional non-linear sigma models
SciPost PhysicsGlobal symmetries can be generalised to transformations generated by topological operators, including cases in which the topological operator does not have an inverse.
Guillermo Arias-Tamargo, Chris Hull, Maxwell L. Velásquez Cotini Hutt
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Redefining B-twisted topological sigma models
, 1995 A recently proposed variation on the usual procedure to perform the topological B-twist in rigid $N=2$ models is applied to the case of the $\sigma $ model on a K\"ahler manifold. This leads to an alternative description of Witten's topological $\sigma $
De Jonghe, F. +3 more
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Auxiliary field sigma models and Yang-Baxter deformations
Journal of High Energy PhysicsWe combine the Yang-Baxter (YB) and bi-Yang-Baxter (bi-YB) deformations with higher-spin auxiliary field deformations to construct multi-parameter families of integrable deformations of the principal chiral model on a Lie group G with semi-simple Lie ...
Daniele Bielli +3 more
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Model companions of theories with an automorphism
, 1998 For a theory $T$ in $L, T_\sigma$ is the theory of the models of $T$ with an automorphism $\sigma$. If $T$ is an unstable model complete theory without the independence property, then $T_\sigma$ has no model companion.
Kikyo, Hirotaka
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