SciELO - Scientific Electronic Library Online

 
vol.58 issue1On the centre of mass velocity in molecular dynamics simulationsA m-dimensional stochastic estimator author indexsubject indexsearch form
Home Pagealphabetic serial listing  

Revista mexicana de física

Print version ISSN 0035-001X

Abstract

CISNEROS-PARRA, J.U.. On singular lagrangians and Dirac's method. Rev. mex. fis. [online]. 2012, vol.58, n.1, pp. 61-68. ISSN 0035-001X.

We show some instances of singular lagrangians from the classical mechanics of particles and apply Dirac's method for building the canonical equations. We find then the reason for the singularity, and therefore, we get the Hamilton equations with the familiar procedure, that is without the need of Dirac's procedure. Known cases of singular lagrangians in special relativity are also presented, and their non-singular alternatives.

Keywords : Singular lagrangian; classical mechanics; special relativity.

        · abstract in Spanish     · text in English     · pdf in English