Dirac-like approach for consistent discretizations of classical constrained theories

Details Dirac-like approach for consistent discretizations of classical constrained theories Dirac-like approach for consistent discretizations of classical constrained theories

2004-05-26

arxiv.org/abs/gr-qc/0405131v1

J.Math.Phys. 46 (2005) 012901

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, RevTeX

Scientific paper

10.1063/1.1823030

We analyze the canonical treatment of classical constrained mechanical systems formulated with a discrete time. We prove that under very general conditions, it is possible to introduce nonsingular canonical transformations that preserve the constraint surface and the Poisson or Dirac bracket structure. The conditions for the preservation of the constraints are more stringent than in the continuous case and as a consequence some of the continuum constraints become second class upon discretization and need to be solved by fixing their associated Lagrange multipliers. The gauge invariance of the discrete theory is encoded in a set of arbitrary functions that appear in the generating function of the evolution equations. The resulting scheme is general enough to accommodate the treatment of field theories on the lattice. This paper attempts to clarify and put on sounder footing a discretization technique that has already been used to treat a variety of systems, including Yang--Mills theories, BF-theory and general relativity on the lattice.

Affiliated with

Also associated with

No associations

Rating

Dirac-like approach for consistent discretizations of classical constrained theories does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dirac-like approach for consistent discretizations of classical constrained theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dirac-like approach for consistent discretizations of classical constrained theories will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-78878