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dc.contributor.authorMartín Benito, Mercedes
dc.contributor.authorNeves, Rita
dc.contributor.authorOlmedo, Javier
dc.identifier.citationMartín-Benito M, Neves RB and Olmedo J (2021) Non-Oscillatory Power Spectrum From States of Low Energy in Kinetically Dominated Early Universes. Front. Astron. Space Sci. 8:702543. [doi: 10.3389/fspas.2021.702543]es_ES
dc.descriptionThis work is supported by the Spanish Government through the projects FIS2017-86497-C2-2-P and PID2019-105943GB-I00 (with FEDER contribution). RN acknowledges financial support from Fundação para a Ciência e a Tecnologia (FCT) through the research grant SFRH/BD/143525/2019. JO acknowledges the Operative Program FEDER2014-2020 Junta de Andalucía-Consejería de Economía y Conocimiento under project E-FQM-262-UGR18 by Universidad de Granada.es_ES
dc.description.abstractRecently, States of Low Energy (SLEs) have been proposed as viable vacuum states of primordial perturbations within Loop Quantum Cosmology (LQC). In this work we investigate the effect of the high curvature region of LQC on the definition of SLEs. Shifting the support of the test function that defines them away from this regime results in primordial power spectra of perturbations closer to those of the so-called Non-oscillatory (NO) vacuum, which is another viable choice of initial conditions previously introduced in the LQC context. Furthermore, through a comparison with the Hadamard-like SLEs, we prove that the NO vacuum is of Hadamard type as well.es_ES
dc.description.sponsorshipFEDER2014-2020 Junta de Andalucía-Consejería de Economía y Conocimiento E-FQM-262-UGR18es_ES
dc.description.sponsorshipSpanish Government FIS2017-86497-C2-2-P, PID2019-105943GB-I00es_ES
dc.description.sponsorshipFundação para a Ciência e a Tecnologiaes_ES
dc.description.sponsorshipUniversidad de Granadaes_ES
dc.description.sponsorshipFundació Catalana de Trasplantament SFRH/BD/143525/2019es_ES
dc.publisherFrontiers Mediaes_ES
dc.rightsAtribución 3.0 España*
dc.subjectLoop quantum cosmologyes_ES
dc.subjectPrimordial perturbationses_ES
dc.subjectPower spectraes_ES
dc.subjectQuantum field theory in curved spacetimeses_ES
dc.subjectStates of low energyes_ES
dc.subjectNon-oscillatory vacuum statees_ES
dc.titleNon-Oscillatory Power Spectrum From States of Low Energy in Kinetically Dominated Early Universeses_ES

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Atribución 3.0 España
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