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5 papers · 1 filter
Thoughts on Duality and Fundamental Constants
J. A. Nieto, L. Ruiz, J. Silvas
We consider some fundamental constants from the point of view of the duality symmetry. Our analysis of duality is focused on three issues: the maximum radiated power of gravitation…
Superfield Description of a Self-Dual Supergravity a la MacDowell-Mansouri
J. A. Nieto
Using MacDowell-Mansouri theory, in this work, we investigate a superfield description of the self-dual supergravity a la Ashtekar. We find that in order to reproduce previous resu…
Towards an Ashtekar Formalism in Twelve Dimensions
J. A. Nieto
We discuss the Ashtekar formalism from the point of view of twelve dimensions. We first focus on the 2+10 spacetime signature and then we consider the transition $2+10\to (2+2)+(0+…
Soldered Bundle Background for the De Sitter Top
J. Armenta, J. A. Nieto
We prove that the mathematical framework for the de Sitter top system is the de Sitter fiber bundle. In this context, the concept of soldering associated with a fiber bundle plays…
Hamiltonian Noether theorem for gauge systems and two time physics
V. M. Villanueva, J. A. Nieto, L. Ruiz +1
The Noether theorem for Hamiltonian constrained systems is revisited. In particular, our review presents a novel method to show that the gauge transformations are generated by the…