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Thermodynamic particle creation in Hořava–Lifshitz gravity

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Abstract

Hořava–Lifshitz (HL) gravity belongs to a class of modified gravity models capable of providing interesting possibilities from a cosmological perspective. In this paper, we obtain three exact solutions to the Friedmann equations corresponding to the HL model. Out of these three solutions, two of the solutions are physical, using which we studied the dynamics of particle creation in the model. In our study, we found that, although the overall evolution of the physical and thermodynamic parameters of our model are well-behaved, the models are unstable in the context of squared sound speed.

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Authors and Affiliations

  1. Department of Physics, Dibrugarh University, Dibrugarh, Assam, 786004, India

    Chayanika Chetia, Mrinnoy M. Gohain & Kalyan Bhuyan

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  1. Chayanika Chetia
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  2. Mrinnoy M. Gohain
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  3. Kalyan Bhuyan
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Correspondence to Chayanika Chetia.

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Chetia, C., Gohain, M.M. & Bhuyan, K. Thermodynamic particle creation in Hořava–Lifshitz gravity. Indian J Phys 98, 1527–1538 (2024). https://doi.org/10.1007/s12648-023-02921-7

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