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8 papers · 1 filter
Lagrangian Formulation of Symmetric Space sine-Gordon Models
I. Bakas, Q-Han Park, H. J. Shin
The symmetric space sine-Gordon models arise by conformal reduction of ordinary 2-dim -models, and they are integrable exhibiting a black-hole type metric in target space. We pr…
Quantum N=2 super Algebra In Superspace
Changhyun Ahn, E. Ivanov, S. Krivonos +1
We discuss the N=2 extension of Polyakov-Bershadsky algebra with the generic central charge, , at the quantum level in superspace. It contains, in addition to the sp…
Yangian Symmetries in the WZW Model and the Calogero-Sutherland Model
Changhyun Ahn, Soonkeon Nam
We study the , level Wess-Zumino-Witten model, with affine primary fields as spinon fields of fundamental representation. By evaluating the action of the Yangian generat…
Complex sine-Gordon Theory for Coherent Optical Pulse Propagation
Q-Han Park, H. J. Shin
It is shown that the McCall-Hahn theory of self-induced transparency in coherent optical pulse propagation can be identified with the complex sine-Gordon theory in the sharp line l…
Integrable Field Theories derived from 4D Self-dual Gravity
Tatsuya Ueno
We reformulate the self-dual Einstein equation as a trio of differential form equations for simple two-forms. Using them, we can quickly show the equivalence of the theory and 2D s…
N=2 Affine Superalgebras and Hamiltonian Reduction in N=2 Superspace
Changhyun Ahn, E. Ivanov, A. Sorin
We construct N=2 affine current algebras for the superalgebras sl(n|n-1)^{(1)} in terms of N=2 supercurrents subjected to nonlinear constraints and discuss the general procedure of…