Gravity-induced neutrino-antineutrino oscillations near a rotating primordial black hole are computed in Kerr-Schild polar coordinates, with quantum speed limit and entanglement entropy estimated.
Experimental tests of curvature couplings of Fermions in General Relativity
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abstract
Spin 1/2 particles in geodesic trajectories experience no gravitational potential but they still have non-zero couplings to the curvature tensor. The effect of space time curvature on fermions can be parameterized by a vector and a pseudo-vector potential. These apparent CPT violating terms can be measured with satellite based spin-polarized torsion balance and clock comparison experiments. The Earth's curvature effect is of the order of 10^{-37} Gev which is not far from the present bounds of ~10^{-29} Gev on such CPT violating couplings.
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2025 1verdicts
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Probing the quantum speed limit and entanglement in flavor oscillations of neutrino-antineutrino system in curved spacetime
Gravity-induced neutrino-antineutrino oscillations near a rotating primordial black hole are computed in Kerr-Schild polar coordinates, with quantum speed limit and entanglement entropy estimated.