Modification of gravity due to torsion

Modifications of general relativity have been considered as one of the possible ways of addressing some of the outstanding problems related to the large scale gravitational physics. In this contribution we review some of the recent results which are due to the inclusion of dynamical torsion. More sp...

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Bibliographic Details
Main Authors: Nair, V P, Nikiforova, V, Randjbar-Daemi, S, Rubakov, V
Format: Conference Proceeding
Language:English
Subjects:
ANGULAR MOMENTUM
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
DEGREES OF FREEDOM
DOCUMENT TYPES
ENERGY-MOMENTUM TENSOR
FIELD THEORIES
GENERAL RELATIVITY THEORY
GRAVITATION
MODIFICATIONS
PARTICLE PROPERTIES
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
RELATIVITY THEORY
REVIEWS
SPACE-TIME
SPIN
SYMMETRY
TENSORS
TORSION
UNIVERSE
YANG-MILLS THEORY
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Summary:Modifications of general relativity have been considered as one of the possible ways of addressing some of the outstanding problems related to the large scale gravitational physics. In this contribution we review some of the recent results which are due to the inclusion of dynamical torsion. More specifically we shall discuss the propagation of massive spin-2 particles in flat and curved space times. We shall show that, contrary to what is generally believed, spinning matter is not the sole source of torsion field. A symmetric energy momentum tensor can also couple to torsion degrees of freedom. The massive and massless spin-2 particles mix giving rise to an infrared modification of gravity.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3292523