Dynamical dark energy and infinite statistics

Jejjala, Vishnu; Kavic, Michael J.; Minic, Djordje; Takeuchi, Tatsu

doi:10.1142/s0217751x22420015

Dynamical dark energy and infinite statistics

Journal Article · 20 May 2022 · International Journal of Modern Physics A

DOI:https://doi.org/10.1142/s0217751x22420015· OSTI ID:1980826

Jejjala, Vishnu ^[1]; Kavic, Michael J. ^[2]; Minic, Djordje ^[3]; Takeuchi, Tatsu ^[3]

Mandelstam Institute for Theoretical Physics, University of the Witwatersrand, Johannesburg, Wits 2050, South Africa; School of Physics, University of the Witwatersrand, Johannesburg, Wits 2050, South Africa; National Institute for Theoretical Physics (NITheP), University of the Witwatersrand, Johannesburg, Wits 2050, South Africa; DST-NRF Centre of Excellence in Mathematical and Statistical Sciences (CoE-MaSS), University of the Witwatersrand, Johannesburg, Wits 2050, South Africa; OSTI
Department of Chemistry and Physics, SUNY Old Westbury, Old Westbury, NY 11568, USA
Department of Physics, Virginia Tech, Blacksburg, VA 24061, USA

In the [Formula: see text]CDM model, dark energy is viewed as a constant vacuum energy density, the cosmological constant in the Einstein–Hilbert action. This assumption can be relaxed in various models that introduce a dynamical dark energy. In this paper, we argue that the mixing between infrared (IR) and ultraviolet (UV) degrees of freedom in quantum gravity leads to infinite statistics, the unique statistics consistent with Lorentz invariance in the presence of nonlocality, and yields a fine structure for dark energy. Introducing IR and UV cutoffs into the quantum gravity action, we deduce the form of [Formula: see text] as a function of redshift and translate this to the behavior of the Hubble parameter.

Research Organization:: Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: SC0020262

OSTI ID:: 1980826

Journal Information:: International Journal of Modern Physics A, Journal Name: International Journal of Modern Physics A Journal Issue: 17 Vol. 37; ISSN 0217-751X

Publisher:: World Scientific

Country of Publication:: United States

Language:: English

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