Unimodular cosmology and the weight of energy

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Some models are presented in which the strength of the gravitational coupling of the potential energy relative to the same coupling for the kinetic energy is, in a precise sense, adjustable. The gauge symmetry of these models consists of those coordinate changes with unit jacobian.
LaTeX, 23 pages, conclusions expanded. Two paragraphs and a new reference added

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High Energy Physics - Theory, Astrophysics, General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/194978

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/0702184
 http://arxiv.org/abs/hep-th/0702184
 Phys.Rev.D76:064013,2007
 doi:10.1103/PhysRevD.76.064013

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arXiv