Quantum flavor vacuum in the expanding universe: A possible candidate for cosmological dark matter?

Capolupo, Antonio; Carloni, Sante; Quaranta, Aniello

doi:10.1103/physrevd.105.105013

Cited by 14 publications

(14 citation statements)

References 57 publications

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“…[48][49][50][51][52], and the analysis of the neutrino mixing contribution to the dark matter in curved background has been recently performed in ref. [53].…”

Section: Introductionmentioning

confidence: 99%

Boson mixing and flavor vacuum in the expanding Universe: a possible candidate for the dark energy

Capolupo¹,

Quaranta²

2023

Preprint

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We analyze the boson mixing in curved spacetime and compute the expectation value of the energy-momentum tensor of bosons on the flavor vacuum in spatially flat Friedmann-Lemaître-Robertson-Walker metrics. We show that the energy-momentum tensor of the flavor vacuum behaves as the effective energy-momentum tensor of a perfect fluid. Assuming a fixed de Sitter background, we show that the equation of state can assume values in the interval [−1, 1], and, in the flat spacetime limit has a value −1, which is the one of the dark energy. The results here presented show that vacuum of mixed bosons like neutrino super-partners, can represent a possible component of the dark energy of the Universe.

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“…[48][49][50][51][52], and the analysis of the neutrino mixing contribution to the dark matter in curved background has been recently performed in ref. [53].…”

Section: Introductionmentioning

confidence: 99%

Boson mixing and flavor vacuum in the expanding Universe: a possible candidate for the dark energy

Capolupo¹,

Quaranta²

2023

Preprint

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“…Due to its condensate structure the flavor vacuum yields a purely quantum field theoretical contribution to the energy-momentum tensor of matter. Remarkably, the energy-momentum tensor associated to the flavor vacuum is that of a pressure-less perfect fluid [26][27][28][29][30]. Consequently the flavor vacuum may possibly represent a dark matter component.…”

Section: Introductionmentioning

confidence: 99%

“…A stronger hint to such a possibility comes from the curved spacetime generalization of the flavor fock space approach [26,32]. Much of the formalism, including the condensate structure of the flavor vacuum, is common to the flat space theory.…”

Section: Introductionmentioning

confidence: 99%

“…For a spatially flat Friedmann-Robertson-Walker metric with De Sitter evolution, at late times, the energy density takes the form [26]…”

Section: Introductionmentioning

confidence: 99%

“…where τ is the conformal time, H 0 is the constant Hubble factor and Λ, Ξ are the curved space counterparts of U, V (Bogoliubov coefficients). For the details, we refer the reader to the work [26]. The essential point of Eq.…”

Section: Introductionmentioning

confidence: 99%

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Neutrino capture on tritium as a probe of flavor vacuum condensate and dark matter

Capolupo¹,

Quaranta²

2022

Preprint

Self Cite

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We show that the study of neutrino capture on tritium, for non-relativistic neutrinos, can allow to distinguish among the various neutrino models, eventually prove the quantum field theory condensation effects and permit to test the hypothesis according to which the flavor vacuum energy gives a contribution to the dark matter of the universe. Indeed, we show that the capture rate depends on the neutrino model considered, and that it brings an imprint of the flavor vacuum condensate. Experiments like PTOLEMY, designed to reveal the cosmic neutrino background, then can give an indication of the existence of the dark matter component induced by neutrino mixing.

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Phase structure of quantum corrected charged AdS black hole surrounded by perfect fluid dark matter

Li,

Zhang,

Sun

et al. 2024

Chinese Journal of Physics

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Quantum flavor vacuum in the expanding universe: A possible candidate for cosmological dark matter?

Cited by 14 publications

References 57 publications

Boson mixing and flavor vacuum in the expanding Universe: a possible candidate for the dark energy

Boson mixing and flavor vacuum in the expanding Universe: a possible candidate for the dark energy

Neutrino capture on tritium as a probe of flavor vacuum condensate and dark matter

Phase structure of quantum corrected charged AdS black hole surrounded by perfect fluid dark matter

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