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Linking loop quantum gravity quantization ambiguities with phenomenology

Suddhasattwa Brahma1, Michele Ronco2,3, Giovanni Amelino-Camelia2,3, and Antonino Marcianò1

  • 1Center for Field Theory and Particle Physics, Fudan University, 200433 Shanghai, China
  • 2Dipartimento di Fisica, Università di Roma “La Sapienza”, P.le A. Moro 2, 00185 Roma, Italy
  • 3INFN, Sez. Roma1, P.le A. Moro 2, 00185 Roma, Italy

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Phys. Rev. D 95, 044005 – Published 6 February, 2017

DOI: https://doi.org/10.1103/PhysRevD.95.044005

Abstract

It is well known that extracting viable testable predictions out of fundamental quantum gravity theories is notoriously difficult. In this paper, we aim to incorporate putative quantum corrections coming from loop quantum gravity in deriving modified dispersion relations for particles in a deformed Minkowski spacetime. We show how different choices of the Immirzi parameter can, in some cases, serendipitously lead to different outcomes for such modifications, depending on the quantization scheme chosen. This allows one to differentiate between these quantization choices via testable phenomenological predictions.

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Phys. Rev. D 95, 044005– Published 6 February, 2017
  • Received 3 November 2016

© 2017 American Physical Society

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