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Fermions in Hybrid LQC

AuthorsMena Marugán, Guillermo A. ; Elizaga Navascués, Beatriz ; Martín-Benito, Mercedes
Issue Date3-Jul-2017
CitationChair of Theory of Relativity and Gravitation (2017)
AbstractWe introduce Dirac fields in hybrid loop quantum cosmology and discuss their treatment as primordial perturbations, additional to those of the geometry and the inflaton field. Adopting a Born-Oppenheimer ansatz, we show how to deduce a Schrodinger equation that dictates the quantum evolution of these fermionic perturbations. Remarkably, such evolution is unitary, and couples the fermion field with an infinite sequence of quantum moments of the homogeneous geometry. We also investigate issues related with the quantum backreaction produced by the Dirac fields.
DescriptionConferencia invitada. -- Presentación de 15 diapositivas. -- LOOPS'17, Institute of Theoretical Physics, University of Warsaw, Warsaw, Poland, July 3rd 2017. -- http://ktwig.fuw.edu.pl/1,1,98,99,quantum-cosmology.html
Appears in Collections:(CFMAC-IEM) Comunicaciones congresos
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