Adiabatic renormalization of the stress-energy tensor for spin-1/2 fields
Author
Torrentí, FranciscoEntity
UAM. Departamento de Física TeóricaPublisher
Institute of Physics PublishingDate
2015-04-28Citation
10.1088/1742-6596/600/1/012029
Journal of Physics: Conference Series 600.1 (2015): 012029
ISSN
1742-6588 (Print); 1742-6596 (Online)DOI
10.1088/1742-6596/600/1/012029Funded by
This work is supported by The Severo Ochoa PhD fellowship SVP 2013-067697, the Research Project of the Sapnish MINECO: FPA2012-39684-C03-02 and the Centro de Excelencia Severo Ochoa Programme SEV-2012-0249Project
Gobierno de España. SVP 2013-067697; Gobierno de España. FPA2012-39684-C03-02; Gobierno de España. SEV-2012-0249Editor's Version
http://dx.doi.org/10.1088/1742-6596/600/1/012029Subjects
Cold matter; Expectation values; Generic expression; Renormalization methods; FísicaRights
© Published under licence by IOP Publishing Ltd.Abstract
We review the adiabatic renormalization method for spin-1/2 fields in FLRW spacetimes, emphasizing its similarities and differences with the scalar case. With it, we obtain a generic expression for the renormalized expectation value of the stress-energy tensor and analyze its properties. We particularize this result to de Sitter and radiation-dominated universes, recovering in the second case the equations of cold matter for late times
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