Radioactive beams and inverse kinematics: Probing the quantal texture of the nuclear vacuum

Barranco, F.; Potel, G.; Vigezzi, E.; Broglia, R. A.

doi:10.1140/epja/i2019-12772-8

Title: Radioactive beams and inverse kinematics: Probing the quantal texture of the nuclear vacuum

Journal Article · Wed Jul 03 00:00:00 EDT 2019 · European Physical Journal. A

DOI:https://doi.org/10.1140/epja/i2019-12772-8· OSTI ID:1598869

Barranco, F. ^[1]; Potel, G. ^[2]; Vigezzi, E. ^[3]; Broglia, R. A. ^[4]

Univ. of Seville (Spain)
Michigan State Univ., East Lansing, MI (United States)
Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
Univ. of Copenhagen (Denmark); Univ. degli Studi di Milano (Italy)

The properties of the quantum electrodynamic (QED) vacuum in general, and of the nuclear vacuum (ground) state in particular, are determined by virtual processes implying the excitation of a photon and of an electron-positron pair in the first case and of, for instance, the excitation of a collective quadrupole surface vibration and a particle-hole pair in the nuclear case. Signals of these processes can be detected in the laboratory in terms of what can be considered a nuclear analogue of Hawking radiation. An analogy which extends to other physical processes involving QED vacuum fluctuations like the Lamb shift, pair creation by $\gamma$-rays, van der Waals forces and the Casimir effect, to the extent that one concentrates on the eventual outcome resulting by forcing a virtual process to become real, and not on the role of the black hole in defining the event horizon. In the nuclear case, the role of this event is taken over at a microscopic and fully quantum mechanical level, by nuclear probes (reactions) acting on virtual particles of the zero point fluctuations (ZPF) of the nuclear vacuum in a similar irreversible, no-return, fashion as the event horizon does, letting the other particle, entangled with the first one, escape to infinity, and eventually be detected. With this proviso in mind one can posit that the reactions ¹H(¹¹Be,¹⁰Be(2⁺;3.37MeV))²H and ¹H(¹¹Li,⁹Li(1/2^-;2.69MeV))³H together with the associated $ \gamma$-decay processes suggest a possible nuclear analogy of Hawking radiation.

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Research Organization:: Michigan State Univ., East Lansing, MI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: SC0013617

OSTI ID:: 1598869

Journal Information:: European Physical Journal. A, Vol. 55, Issue 7; ISSN 1434-6001

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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