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Revista mexicana de física
Print version ISSN 0035-001X
Rev. mex. fis. vol.62 n.1 México Jan./Feb. 2016
Investigación
Hamiltonian dynamics: four dimensional BF-like theories with a compact dimension
A. Escalante and M. Zarate Reyes
Instituto de Física Luis Rivera Terrazas, Benemérita Universidad Autónoma de Puebla, Apartado postal J-48 72570 Puebla. Pue., México, e-mail: aescalan@ifuap.buap.mx; mzarate@ifuap.buap.mx
Received 29 July 2015;
accepted 23 October 2015
Abstract
A detailed Dirac's canonical analysis for a topological four dimensional BF-like theory with a compact dimension is developed. By performing the compactification process we find out the relevant symmetries of the theory, namely, the full structure of the constraints and the extended action. We show that the extended Hamiltonian is a linear combination of first class constraints, which means that the general covariance of the theory is not affected by the compactification process. Furthermore, in order to carry out the correct counting of physical degrees of freedom, we show that must be taken into account reducibility conditions among the first class constraints associated with the excited KK modes. Moreover, we perform the Hamiltonian analysis of Maxwell theory written as a BF-like theory with a compact dimension, we analyze the constraints of the theory and we calculate the fundamental Dirac's brackets, finally the results obtained are compared with those found in the literature.
Keywords: Topological theories; extra dimensions; Hamiltonian dynamics.
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Acknowledgments
This work was supported by CONACyT under Grant No. CB-2014-01/ 240781. We would like to thank R. Cartas-Fuentevilla for discussion on the subject and reading of the manuscript.
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