Please use this identifier to cite or link to this item: https://idr.l2.nitk.ac.in/jspui/handle/123456789/16293
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dc.contributor.authorAgullo I.
dc.contributor.authorOlmedo J.
dc.contributor.authorSreenath V.
dc.date.accessioned2021-05-05T10:30:07Z-
dc.date.available2021-05-05T10:30:07Z-
dc.date.issued2020
dc.identifier.citationPhysical Review D Vol. 101 , 12 , p. -en_US
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.101.123531
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/16293-
dc.description.abstractWe derive a Hamiltonian formulation of the theory of gauge invariant, linear perturbations in anisotropic Bianchi I spacetimes, and describe how to quantize this system. The matter content is assumed to be a minimally coupled scalar field with potential V(φ). We show that a Bianchi I spacetime generically induces both anisotropies and quantum entanglement on cosmological perturbations, and provide the tools to compute the details of these features. We then apply this formalism to a scenario in which the inflationary era is preceded by an anisotropic Bianchi I phase, and discuss the potential imprints in observable quantities. The formalism developed here paves the road to a simultaneous canonical quantization of both the homogeneous degrees of freedom and the perturbations, a task that we develop in a companion paper. © 2020 American Physical Society.en_US
dc.titleHamiltonian theory of classical and quantum gauge invariant perturbations in Bianchi I spacetimesen_US
dc.typeArticleen_US
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