Spin correlation and entanglement in two-proton emissions

10 Jun 2026, 09:30
30m
Nishina Hall (E02) (RIKEN)

Nishina Hall (E02)

RIKEN

Speaker

Dr Tomohiro OISHI (RIBF, RIKEN)

Description

Spin correlation is a fundamental quantity to characterize the quantum entanglement.
In the nuclear physics, quantum-entangled states may exist in various systems and reactions.
We theoretically show that a two-proton (2p) emitter with a diproton-correlated initial state can act as a source of spin-entangled proton pairs.
For the light 2p emitters, Be-6 and Ne-16 nuclei, a violation of the local-hidden-variable (LHV) bound in terms of Clauser-Horne-Shimony-Holt (CHSH) inequality is suggested.
For this purpose, the time-dependent three-body model has been utilized.
In this contribution, we also discuss how the 2p-spin correlation is affected by (i) the proton-proton interaction, (ii) democratic or sequential character, and (iii) diproton correlation in the initial state.

Author

Dr Tomohiro OISHI (RIBF, RIKEN)

Presentation materials