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Rainbows without unicorns: metric structures in theories with modified dispersion relations (CROSBI ID 251888)

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Lobo, Iarley P. ; Loret, Niccoló ; Nettel, Francisco Rainbows without unicorns: metric structures in theories with modified dispersion relations // European physical journal C : particles and fields, 77 (2017), 451, 10. doi: 10.1140/epjc/s10052-017-5017-0

Podaci o odgovornosti

Lobo, Iarley P. ; Loret, Niccoló ; Nettel, Francisco

engleski

Rainbows without unicorns: metric structures in theories with modified dispersion relations

Rainbow metrics are a widely used approach to the metric formalism for theories with modified dispersion relations. They have had a huge success in the quantum gravity phenomenology literature, since they allow one to introduce momentum-dependent space-time metrics into the description of systems with a modified dispersion relation. In this paper, we introduce the reader to some realizations of this general idea: the original rainbow metrics proposal, the momentum-space-inspired metric and a Finsler geometry approach. As the main result of this work we also present an alternative definition of a four-velocity dependent metric which allows one to handle the massless limit. This paper aims to highlight some of their properties and how to properly describe their relativistic realizations.

quantum-spacetime ; gravity rainbow ; relativity ; finsler

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Podaci o izdanju

77

2017.

451

10

objavljeno

1434-6044

1434-6052

10.1140/epjc/s10052-017-5017-0

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Fizika

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