Einstein-Cartan gravity with Holst term and fermions
arXiv:0812.1298 · doi:10.1103/PhysRevD.79.064029
Abstract
We investigate the consequences of the ambiguity of minimal coupling procedure for Einstein-Cartan gravity with Holst term and fermions. A new insight is provided into the nature and physical relevance of coupling procedures considered hitherto in the context of Ashtekar-Barbero-Immirzi formalism with fermions. The issue of physical effects of the Immirzi parameter in semi--classical theory is reinvestigated. We argue that the conclusive answer to the question of its measurability will not be possible until the more fundamental problem of nonuniqueness of gravity--induced fermion interaction in Einstein-Cartan theory is solved.
11 pages, typos corrected, final version, to appear in Phys. Rev. D
References in corpus (11)
- Background Independent Quantum Gravity: A Status Report
- Black hole entropy in Loop Quantum Gravity
- Black hole entropy from Quantum Geometry
- Quantum Gravity, Torsion, Parity Violation and all that
- Physical effects of the Immirzi parameter
- Fermions in Ashtekar-Barbero Connections Formalism for Arbitrary Values of the Immirzi Parameter
- Canonical Gravity with Fermions
- Immirzi parameter and fermions with non-minimal coupling
- Torsion Phenomenology at the LHC
- Volume elements and torsion
- Nonuniqueness of gravity-induced fermion interaction in the Einstein-Cartan theory
Cited by in corpus (15)
- Higgs inflation with the Holst and the Nieh-Yan term
- Quantum Einstein-Cartan theory with the Holst term
- Parity Violating Metric-Affine Gravity Theories
- An extended solution space for Chern-Simons gravity: the slowly rotating Kerr black hole
- Stability of non-degenerate Ricci-type Palatini theories
- Parity violation in Poincaré gauge gravity
- On the choice of coupling procedure for the Poincaré gauge theory of gravity
- Modified coupling procedure for the Poincaré gauge theory of gravity
- Hamiltonian analysis of fermions coupled to the Holst action
- Barbero-Immirzi Value from Experiment
- Fermions coupled to the Palatini action in dimensions
- The Poincaré Gauge Theory of Gravty and the Immirzi parameter
- Translations in Quantum Field Theory and the Poincaré Gauge Theory of Gravity
- A New Improved Energy-Momentum Tensor and Its Possible Role in Gravity
- Black hole with a Dirac field in 3+1 dimensions