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General Relativity and Quantum Cosmology

arXiv:2108.11324 (gr-qc)
[Submitted on 24 Aug 2021]

Title:On the Occurrence of Finite-time Singularities in Swampland-related Quintessence Dark Energy Models

Authors:V.K. Oikonomou, Achilles Gitsis, Maria Mitrou
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Abstract:In this work we focus on the phase space singularities of interactive quintessence model in the presence of matter fluid. This model is related to swampland studies, that the outcomes affect all these Swampland related models with the same dynamical system. We shall form the dynamical system corresponding to the cosmological system, which is eventually autonomous, and by using the dominant balances technique we shall investigate the occurrence or not of finite-time singularities. Our results indicate that the dynamical system of the model may develop finite-time singularities, but these are not general singularities, like in the case that the matter fluids were absent, in which case singularities occurred for general initial conditions. Hence, the presence of matter fluids affects the dynamical system of the cosmological system, making the singularities to depend on the initial conditions, instead of occurring for general initial conditions.
Comments: IJGMMP Accepted
Subjects: General Relativity and Quantum Cosmology (gr-qc); Cosmology and Nongalactic Astrophysics (astro-ph.CO); High Energy Physics - Theory (hep-th)
Cite as: arXiv:2108.11324 [gr-qc]
  (or arXiv:2108.11324v1 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.2108.11324
Related DOI: https://doi.org/10.1142/S0219887821502078

Submission history

From: Vasilis Oikonomou [view email]
[v1] Tue, 24 Aug 2021 01:16:41 UTC (11 KB)
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