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arxiv: 0902.2764 · v2 · submitted 2009-02-16 · 🌀 gr-qc · hep-th

Peccei--Quinn mechanism in gravity and the nature of the Barbero--Immirzi parameter

Simone Mercuri This is my paper
classification 🌀 gr-qc hep-th
keywords barbero--immirziparametermechanismpeccei--quinnactionallowsambiguitiesanalog
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A general argument provides the motivation to consider the Barbero--Immirzi parameter as a field. The specific form of the geometrical effective action allows to relate the value of the Barbero--Immirzi parameter to other quantum ambiguities through the analog of the Peccei--Quinn mechanism.

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