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First-order actions: A new view
(World Scientific Publ Co Pte Ltd, 2005-12-07)
We analyse systems described by first-order actions using the Hamilton-Jacobi (HJ) formalism for singular systems. In this study we verify that generalized brackets appear in a natural way in HJ approach, showing us the ...
Non-involutive constrained systems and Hamilton-Jacobi formalism
(Academic Press Inc. Elsevier B.V., 2008-12-01)
In this work we discuss the natural appearance of the Generalized Brackets in systems with non-involutive (equivalent to second class) constraints in the Hamilton-Jacobi formalism. We show how a consistent geometric ...
Quantum discrete phase space dynamics and its continuous limit
(Iop Publishing Ltd, 2000-02-11)
The main aspects of a discrete phase space formalism are presented and the discrete dynamical bracket, suitable for the description of time evolution in finite-dimensional spaces, is discussed. A set of operator bases is ...
Diferenças biomecânicas entre a técnica lingual e a labial
(Dental Press Editora, 2008-02-01)
Pela sua característica essencialmente estética, o aparelho lingual vem despertando interesse por parte dos ortodontistas e da comunidade em geral. O crescente mercado dos serviços de beleza, em todos os setores (médicos, ...
REDUCTION OF TODA LATTICE HIERARCHY TO GENERALIZED KDV HIERARCHIES AND THE 2-MATRIX MODEL
(World Scientific Publ Co Pte Ltd, 1995-07-10)
Toda lattice hierarchy and the associated matrix formulation of the 2M-boson KP hierarchies provide a framework for the Drinfeld-Sokolov reduction scheme realized through Hamiltonian action within the second KP Poisson ...
On negative flows of the AKNS hierarchy and a class of deformations of a bihamiltonian structure of hydrodynamic type
(Iop Publishing Ltd, 2006-02-03)
A deformation parameter of a bihamiltonian structure of hydrodynamic type is shown to parametrize different extensions of the AKNS hierarchy to include negative flows. This construction establishes a purely algebraic link ...
Hamiltonian reduction and the construction of q-deformed extensions of the Virasoro algebra
(1998-07-24)
In this paper we employ the construction of the Dirac bracket for the remaining current of sl(2) q deformed Kac-Moody algebra when constraints similar to those connecting the sl(2)-Wess-Zumino-Witten model and the Liouville ...
Deformations of N=2 superconformal algebra and supersymmetric two-component Camassa-Holm equation
(Iop Publishing Ltd, 2007-04-27)
This paper is concerned with a link between central extensions of N = 2 superconformal algebra and a supersymmetric two-component generalization of the Camassa-Holm equation. Deformations of superconformal algebra give ...
Hamiltonian Formulation of the Yang-Mills field on the null-plane
(Elsevier B.V., 2010-02-01)
We have studied the null plane hamiltonian structure of the free Yang Mills fields. Following the Dirac's procedure for constrained systems we have performed a detailed analysis of the constraint structure of the model and ...
General relativity in two dimensions: A Hamilton-Jacobi analysis
(Academic Press Inc. Elsevier B.V., 2010-11-01)
We analyzed the constraint structure of the Einstein-Hilbert first-order action in two dimensions using the Hamilton-Jacobi approach. We were able to find a set of involutive, as well as a set of non-involutive constraints. ...