Results 11 to 20 of about 2,302,822 (346)
The exceptional sigma model [PDF]
Journal of High Energy Physics, 2018 We detail the construction of the exceptional sigma model, which describes a string propagating in the “extended spacetime” of exceptional field theory. This is to U-duality as the doubled sigma model is to T-duality. Symmetry specifies the Weylinvariant
Alex S. Arvanitakis, Chris D. A. Blair
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Complexified sigma model and duality [PDF]
Modern Physics Letters A, 2011 We show that the equations of motion associated with a complexified sigma-model action do not admit manifest dual SO(n,n) symmetry. In the process we discover new type of numbers which we called `complexoids' in order to emphasize their close relation ...
Buscher T. H. +4 more
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Comparing Poisson Sigma Model with A-model [PDF]
Journal of High Energy Physics, 2016 We discuss the A-model as a gauge fixing of the Poisson Sigma Model with target a symplectic structure. We complete the discussion in [arXiv:0706.3164], where a gauge fixing defined by a compatible complex structure was introduced, by showing how to ...
Bonechi, Francesco +2 more
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Topological Massive Sigma Models [PDF]
Nuclear Physics B, 1994 In this paper we construct topological sigma models which include a potential and are related to twisted massive supersymmetric sigma models. Contrary to a previous construction these models have no central charge and do not require the manifold to admit
Birmingham +8 more
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Communications in Mathematical Physics, 2005 We introduce a new topological sigma model, whose fields are bundle maps from the tangent bundle of a 2-dimensional world-sheet to a Dirac subbundle of an exact Courant algebroid over a target manifold. It generalizes simultaneously the (twisted) Poisson sigma model as well as the G/G-WZW model.
Kotov, A., Schaller, P., Strobl, T.
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Quantum group sigma models [PDF]
Journal of Physics A: Mathematical and General, 1993 Comment: 20 ...
Frishman, Y. +2 more
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Sigma-Lognormal Modeling of Speech [PDF]
Cognitive Computation, 2021 AbstractHuman movement studies and analyses have been fundamental in many scientific domains, ranging from neuroscience to education, pattern recognition to robotics, health care to sports, and beyond. Previous speech motor models were proposed to understand how speech movement is produced and how the resulting speech varies when some parameters are ...
C. Carmona-Duarte +4 more
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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
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SciPost Physics, 2019 We study (1+1)-dimensional non-linear sigma models whose target space is the flag manifold U(N)\over U(N_1)\times U(N_2)\cdots U(N_m) , with a specific focus on the special case U(N)
Kantaro Ohmori +2 more
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The Sierpinski Object in the Scott Realizability Topos [PDF]
Logical Methods in Computer Science, 2020 We study the Sierpinski object $\Sigma$ in the realizability topos based on Scott's graph model of the $\lambda$-calculus. Our starting observation is that the object of realizers in this topos is the exponential $\Sigma ^N$, where $N$ is the natural ...
Tom de Jong, Jaap van Oosten
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