19 citations · 69 across the 8 of their papers we have counts for
8 papers
Lightlike Branes as Natural Candidates for Wormhole Throats
Eduardo Guendelman, Alexander Kaganovich, Emil Nissimov +1
We first briefly present a consistent world-volume Lagrangian description of lightlike p-branes (LL-branes) in two equivalent forms - a Polyakov-type and a dual to it Nambu-Goto-ty…
Generalized Gauge Field Approach To Lightlike Branes
E. I. Guendelman, A. Kaganovich, E. Nissimov +1
We propose a general action describing the dynamics of lightlike (LL) p-branes in any odd (p+1) world-volume dimensions. Next, we consider self-consistent coupling of \textsl{LL}-m…
N=2 Supersymmetric Integrable Hierarchies: Additional Symmetries and Darboux-Backlund Solutions
Emil Nissimov, Svetlana Pacheva
We study additional non-isospectral symmetries of constrained (reduced) N=2 supersymmetric KP hierarchies of integrable ``soliton''-like evolution equations. These symmetries are s…
Loop-Algebra and Virasoro Symmetries of Integrable Hierarchies of KP Type
H. Aratyn, J. F. Gomes, E. Nissimov +1
We propose a systematic treatment of symmetries of KP integrable systems, including constrained (reduced) KP models ${\sl cKP}_{R,M}$, and their multi-component (matrix) generaliza…
A New ``Dual'' Symmetry Structure of the KP Hierarchy
H. Aratyn, E. Nissimov, S. Pacheva
A new infinite set of commuting additional (``ghost'') symmetries is proposed for the KP-type integrable hierarchy. These symmetries allow for a Lax representation in which they ar…
Constrained KP Hierarchies: Darboux-Bäcklund Solutions and Additional Symmetries
H. Aratyn, E. Nissimov, S. Pacheva
We illustrate the basic notions of {\em additional non-isospectral symmetries} and their interplay with the discrete {\em \DB transformations} of integrable systems at the instance…
Reduction of Toda Lattice Hierarchy to Generalized KdV Hierarchies and Two-Matrix Model
H. Aratyn, E. Nissimov, S. Pacheva +1
Toda lattice hierarchy and the associated matrix formulation of the -boson KP hierarchies provide a framework for the Drinfeld-Sokolov reduction scheme realized through Hamilto…
Gravity - a Geometric Approach
Emil Nissimov, Svetlana Pacheva
A brief review is given of an adaptation of the coadjoint orbit method appropriate for study of models with infinite-dimensional symmetry groups. It is illustrated on several examp…