Origin of the Immirzi parameter

Origin of the Immirzi parameter

Using quadratic spinor techniques we demonstrate that the Immirzi parameter can be expressed as ratio between scalar and pseudoscalar contributions in the theory and can be interpreted as a measure of how Einstein gravity differs from a generally constructed covariant theory for gravity. This interp...

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Veröffentlicht in:Physical review. D, Particles and fields Particles and fields, 2005-09, Vol.72 (6), Article 064016
Hauptverfasser: Chou, Chung-Hsien, Tung, Roh-Suan, Yu, Hoi-Lai
Format: Artikel
Sprache:eng
Schlagworte:
EINSTEIN FIELD EQUATIONS
EXPECTATION VALUE
GRAVITATION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTIZATION
QUANTUM GRAVITY
RENORMALIZATION
SCALARS
SPINOR FIELDS
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container_title Physical review. D, Particles and fields
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creator Chou, Chung-Hsien
Tung, Roh-Suan
Yu, Hoi-Lai
description Using quadratic spinor techniques we demonstrate that the Immirzi parameter can be expressed as ratio between scalar and pseudoscalar contributions in the theory and can be interpreted as a measure of how Einstein gravity differs from a generally constructed covariant theory for gravity. This interpretation is independent of how gravity is quantized. One of the important advantage of deriving the Immirzi parameter using the quadratic spinor techniques is to allow the introduction of renormalization scale associated with the Immirzi parameter through the expectation value of the spinor field upon quantization.
doi_str_mv 10.1103/PhysRevD.72.064016
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ispartof Physical review. D, Particles and fields, 2005-09, Vol.72 (6), Article 064016
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source American Physical Society Journals
subjects EINSTEIN FIELD EQUATIONS
EXPECTATION VALUE
GRAVITATION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTIZATION
QUANTUM GRAVITY
RENORMALIZATION
SCALARS
SPINOR FIELDS
title Origin of the Immirzi parameter
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