Please use this identifier to cite or link to this item: https://idr.nitk.ac.in/jspui/handle/123456789/13600
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dc.contributor.authorAgullo, I.
dc.contributor.authorOlmedo, J.
dc.contributor.authorSreenath, V.
dc.date.accessioned2020-03-31T08:48:14Z-
dc.date.available2020-03-31T08:48:14Z-
dc.date.issued2020
dc.identifier.citationMathematics, 2020, Vol.8, 2, pp.-en_US
dc.identifier.uri10.3390/math8020290
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/13600-
dc.description.abstractThis paper presents a computational algorithm to derive the theory of linear gauge invariant perturbations on anisotropic cosmological spacetimes of the Bianchi I type. Our code is based on the tensor algebra packages xTensor and xPert, within the computational infrastructure of xAct written in Mathematica. The algorithm is based on a Hamiltonian, or phase space formulation, and it provides an efficient and transparent way of isolating the gauge invariant degrees of freedom in the perturbation fields and to obtain the Hamiltonian generating their dynamics. The restriction to Friedmann-Lemaitre-Robertson-Walker spacetimes is straightforward. � 2019 by the authors.en_US
dc.titlexAct implementation of the theory of cosmological perturbation in bianchi I spacetimesen_US
dc.typeArticleen_US
Appears in Collections:1. Journal Articles

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