Universe (Mar 2022)

A Matrix Model of Four-Dimensional Noncommutative Gravity

  • George Manolakos,
  • Pantelis Manousselis,
  • Danai Roumelioti,
  • Stelios Stefas,
  • George Zoupanos

DOI
https://doi.org/10.3390/universe8040215
Journal volume & issue
Vol. 8, no. 4
p. 215

Abstract

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In this review, we revisit our latest works regarding the description of the gravitational interaction on noncommutative spaces as matrix models. Specifically, inspired by the gauge-theoretic approach of (ordinary) gravity, we make use of the suggested methodology, modified appropriately for the noncommutative framework, of the well-established formulation of gauge theories on them. Making use of a covariant four-dimensional fuzzy space, we formulate the gauge theory with an extended gauge group due to noncommutativity. In turn, in order to decrease the amount of symmetry we employ a symmetry breaking and result with an action which describes a theory that is a minimal noncommutative extension of the original.

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