Decoherence of quantum superpositions by Reissner-Nordström black holes

Nov 7, 2024
14 pages
Published in:
  • Phys.Rev.D 111 (2025) 2, 024040
  • Published: Jan 13, 2025
e-Print:
DOI:

Citations per year

20232024202501
Abstract: (APS)
Recently, it was shown by Danielson et al. (DSW) that, for the massive or charged body in a quantum spatial separated superposition state, the presence of a black hole can decohere the superposition inevitably toward capturing the radiation of soft photons or gravitons [D. L. Danielson et al., Black holes decohere quantum superpositions, Int. J. Mod. Phys. D 31, 2241003 (2022); D. L. Danielson et al., Killing horizons decohere quantum superpositions, Phys. Rev. D 108, 025007 (2023); D. L. Danielson et al., Local description of decoherence of quantum superpositions by black holes and other bodies, ]. In this work, we study the DSW decoherence effect for the static charged body in the Reissner-Nordström black holes. By calculating the decohering rate for this case, it is shown that the superposition is decohered by the low-frequency photons that propagate through the black hole horizon. For the extremal Reissner-Nordström black hole, the decoherence of quantum superposition is completely suppressed due to the black hole Meissner effect. It is also found that the decoherence effect caused by the Reissner-Nordström black hole is equivalent to that of an ordinary matter system with the same size and charge.
Note:
  • 14 pages, 1 figure, comparison the decoherence of black hole with ordinary matter added