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gr-qc2000
Quantization of Generally Covariant Systems
Daniel M. Sforza
Finite dimensional models that mimic the constraint structure of Einstein's General Relativity are quantized in the framework of BRST and Dirac's canonical formalisms. The first sy…
gr-qc2000★ 1 cited
Operator ordering for generally covariant systems
Rafael Ferraro, Daniel M. Sforza
The constraint operators belonging to a generally covariant system are found out within the framework of the BRST formalism. The result embraces quadratic Hamiltonian constraints w…
gr-qc2000★ 2 cited
Entropy generation in cosmological particle creation
Mario A. Castagnino, Fabian H. Gaioli, Daniel M. Sforza
A very simplified model of the Universe is considered in order to propose an alternative approach to the irreversible evolution of the Universe at very early times. The entropy gen…