Parity violation in metric-torsion theories of gravitation

Journal Article · Wed Oct 15 04:00:00 EDT 1980 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.22.1915· OSTI ID:6998724

Hojman, R; Mukku, C; Sayed, W A

The general structure of metric-torsion theories of gravitation is shown to allow a parity-violating contribution to the complete action which is linear in the curvature tensor and vanishes identically in the absence of torsion. The resulting action involves apart from the Newtonian constant a coupling which governs the strength of the predicted parity-nonconserving ''interactions'' mediated by torsion. We consider this theory in the presence of the Proca field and show that it leads to a parity-violating term in the field equations in contrast to the Einstein-Cartan-Sciama-Kibble theory, which we use as a particularly simple example of a metric-torsion theory of gravitation.

• Research Organization: Advanced School of Physics, Trieste, Italy
• OSTI ID: 6998724
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 22:8; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645400 -- High Energy Physics-- Field Theory
657003* -- Theoretical & Mathematical Physics-- Relativity & Gravitation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COUPLING CONSTANTS
EINSTEIN FIELD EQUATIONS
EQUATIONS
FIELD EQUATIONS
FUNCTIONS
GRAVITATION
INVARIANCE PRINCIPLES
LAGRANGIAN FUNCTION
METRICS
P INVARIANCE
SPACE-TIME
TENSOR FORCES
TORSION