Buscar
Mostrando ítems 21-30 de 31
A Note on Scalar Field Theory in AdS3/CFT2
(World Scientific, 2010-06)
We consider a scalar field theory in AdSd+1, and introduce a formalism on surfaces at equal values of the radial coordinate. In particular, we define the corresponding conjugate momentum. We compute the Noether currents ...
Integrable deformations of strings on symmetric spaces
(Springer, 2014-11-04)
A general class of deformations of integrable sigma-models with symmetric space F/G target-spaces are found. These deformations involve defining the non-abelian T dual of the sigma-model and then replacing the coupling of ...
Supersymmetry flows, semi-symmetric space sine-Gordon models and the Pohlmeyer reduction
(Springer, 2011-03-01)
We study the extended supersymmetric integrable hierarchy underlying the Pohlmeyer reduction of superstring sigma models on semi-symmetric superspaces F/G. This integrable hierarchy is constructed by coupling two copies ...
Hopf solitons and area-preserving diffeomorphisms of the sphere
(Kluwer Academic Publ, 2001-01-01)
We consider a (3+1)-dimensional local field theory defined on the sphere S-2. The model possesses exact soliton solutions with nontrivial Hopf topological charges and an infinite number of local conserved currents. We show ...
Subresultants in multiple roots
(Elsevier, 2012-12-08)
We extend our previous work on Poisson-like formulas for subresultants in roots to the case of polynomials with multiple roots in both the univariate and multivariate case, and also explore some closed formulas in roots ...
On first integrals of the geodesic flow on Heisenberg nilmanifolds
(Elsevier Science, 2016-12)
In this paper we study the geodesic flow on nilmanifolds equipped with a left-invariant metric. We write the underlying definitions and find general formulas for the Poisson involution. As an application we develop the ...
ASYMPTOTIC SUMMATION OF HERMITE SERIES
(Iop Publishing LtdBristolInglaterra, 1992)