Unimodular cosmology and the weight of energy

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.

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Bibliographische Detailangaben
Veröffentlicht in:	Physical review. D, Particles and fields Particles and fields, 2007-09, Vol.76 (6), Article 064013
Hauptverfasser:	Álvarez, Enrique, Faedo, Antón F.
Format:	Artikel
Sprache:	eng
Schlagworte:	COORDINATES COSMOLOGICAL MODELS COSMOLOGY COUPLING GAUGE INVARIANCE KINETIC ENERGY PHYSICS OF ELEMENTARY PARTICLES AND FIELDS POTENTIAL ENERGY QUANTUM FIELD THEORY
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Beschreibung
Zusammenfassung:	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.
ISSN:	1550-7998 0556-2821 1550-2368 1089-4918
DOI:	10.1103/PhysRevD.76.064013