2023
DOI: 10.48550/arxiv.2303.03118
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Raychaudhuri equation in $k$-essence geometry: conditional singular and non-singular cosmological models

Surajit Das,
Arijit Panda,
Goutam Manna
et al.

Abstract: We investigate how the Raychaudhuri equation behaves in the k-essence geometry. As far as we are concerned, both the early and current epochs of the universe are relevant to the k-essence theory. Here, we have studied the k-essence geometry using the Dirac-Born-Infeld (DBI) variety of non-standard action. The corresponding k-essence emergent spacetime is not conformally equivalent to the usual gravitational metric. We assume that the background gravitational metric is of the Friedmann-Lemaitre-Robertson-Walker… Show more

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