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7 papers · 2 filters
Hopf instantons, Chern-Simons vortices, and Heisenberg ferromagnets
P. A. Horváthy
The dimensional reduction of the three-dimensional fermion-Chern-Simons model (related to Hopf maps) of Adam et el. is shown to be equivalent to (i) either the static, fixed--chira…
The mass of asymptotically anti-de Sitter space-times
Piotr T. Chrusciel, Gabriel Nagy
We give a definition of mass for spacelike hypersurfaces in space-times with metrics which are asymptotic to the anti-de Sitter one, or to a class of generalizations thereof. We pr…
Symmetries of fluid dynamics with polytropic exponent
M. Hassaïne, P. A. Horváthy
The symmetries of the general Euler equations of fluid dynamics with polytropic exponent are determined using the Kaluza-Klein type framework of Duval et . In the standard…
Non-Abelian Duality in the String Effective Action
A. Bossard, N. Mohammedi
We study the symmetry of the one-loop effective action of bosonic string theory under non-Abelian T-duality transformations. It is shown that the original Lagrangian and its dual a…
A two-dimensional integrable axionic sigma-model and T-duality
J. Balog, P. Forgacs, L. Palla
An -matrix is proposed for the two dimensional O(3) -model with a dynamical -term (axion model). Exploiting an Abelian T-duality transformation connecting the axion model…
The exotic Galilei group and the "Peierls substitution"
C. Duval, P. A. Horváthy
Taking advantage of the two-parameter central extension of the planar Galilei group, we construct a non relativistic particle model in the plane. Owing to the extra structure, the…