Krein space quantization of linear gravity in de Sitter spacetime and generalization to QFT

It has been shown that the negative-norm states or negative-frequency solutions of the field equation are indispensable for a fully covariant quantization (Krein space quantization) of the minimally coupled free scalar field in de Sitter spacetime. The new method of quantization has been applied for...

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Bibliographic Details
Published in:Journal of physics. Conference series 2009-06, Vol.174 (1), p.012056
Main Author: Payandeh, Farrin
Format: Article
Language:English
Subjects:
Field theory
Measurement
Minkowski space
Physics
Quantum field theory
Quantum theory
Relativity
Scalars
Spacetime
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Summary:It has been shown that the negative-norm states or negative-frequency solutions of the field equation are indispensable for a fully covariant quantization (Krein space quantization) of the minimally coupled free scalar field in de Sitter spacetime. The new method of quantization has been applied for the free boson and spinor fields in Minkowski spacetime, and the basic structure of quantum field theory is reformulated in Krein space. It is seen that the presence of unphysical negative-frequency states plays the role of an automatic renormalization tool for the theory.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/174/1/012056