Gauge invariant coupling of fields to torsion: A string inspired model

Journal Article · Sun May 15 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.106007· OSTI ID:21502658

Bhattacharjee, Srijit; Chatterjee, Ayan ^[1]

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1. Theory Group, Saha Institute of Nuclear Physics, Kolkata 700064 (India)

In a consistent heterotic string theory, the Kalb-Ramond field, which is the source of space-time torsion, is augmented by Yang-Mills and gravitational Chern-Simons terms. When compactified to 4 dimensions and in the field theory limit, such additional terms give rise to interactions with interesting astrophysical predictions like rotation of plane of polarization for electromagnetic and gravitational waves. On the other hand, if one is also interested in coupling 2- or 3-form (Abelian or non-Abelian) gauge fields to torsion, one needs another class of interaction. In this paper, we shall study this interaction and offer some astrophysical and cosmological predictions. We explicitly calculate the Coleman-Weinberg potential for this theory. We also comment on the possibility of such terms in loop quantum gravity where, if the Barbero-Immirzi parameter is promoted to a field, acts as a source for torsion.

• OSTI ID: 21502658
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 10; Other Information: DOI: 10.1103/PhysRevD.83.106007; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASTROPHYSICS
COMPACTIFICATION
COUPLING
FORECASTING
GAUGE INVARIANCE
GRAVITATIONAL WAVES
INTERACTIONS
POLARIZATION
QUANTUM FIELD THEORY
QUANTUM GRAVITY
ROTATION
SPACE-TIME
STRING THEORY
TORSION
YANG-MILLS THEORY
FIELD THEORIES
INVARIANCE PRINCIPLES
MOTION
M-THEORY
PHYSICS