Gravitational effects on quantum coherence in neutrino oscillation

M. M. Ettefaghi, R. Ramazani Arani, and Z. S. Tabatabaei Lotfi
Phys. Rev. D 105, 095024 – Published 17 May 2022

Abstract

In this paper, we investigate the quantum coherence for two flavor neutrinos propagating in a Schwarzschild metric. In fact, this issue is explored both qualitatively via calculating the parameter K3 in Leggett-Garg inequality and also quantitatively by evaluating the l1-norm, C(ρ). Using the weak field approximations, we show that the gravitational effects decrease the maximum value of K3 for some intervals of energy in such a way that there is no violation, while it leaves the maximum amount of the quantum coherence, C(ρ), unchanged.

  • Figure
  • Figure
  • Received 15 September 2021
  • Accepted 21 April 2022

DOI:https://doi.org/10.1103/PhysRevD.105.095024

© 2022 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & AstrophysicsQuantum Information, Science & TechnologyParticles & Fields

Authors & Affiliations

M. M. Ettefaghi*

  • Department of Physics, University of Qom, Qom 371614-6611, Iran

R. Ramazani Arani and Z. S. Tabatabaei Lotfi

  • University of Kashan, Km 6 Ravand Road, Kashan 87317-51167, Iran

  • *mettefaghi@qom.ac.ir
  • ramarani@kashanu.ac.ir
  • astrozat@gmail.com

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Issue

Vol. 105, Iss. 9 — 1 May 2022

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