Quantum Metrology and Fundamental Physics - University Tübingen, Germany

Nonlocal correlations for bosonic fields in black hole quantum atmosphere

Not scheduled

20m

Speaker

johann gil (Jan Dlugosz University in Czestochowa)

Description

Abstract:
Recent developments in black hole physics suggest that Hawking radiation may originate from an extended region outside the event horizon, known as the quantum atmosphere. This motivates the study of spatially dependent quantum effects in curved spacetime.
We investigate bosonic quantum correlations in a bipartite system in the vicinity of a Schwarzschild black hole, where one subsystem remains asymptotically inertial while the other experiences the Hartle–Hawking thermal vacuum. Quantum correlations are quantified using measurement-induced nonlocality (MIN), which captures nonclassical correlations beyond entanglement.
We analyze the dependence of MIN on the local Hartle-Hawking temperature, which varies with radial distance from the black hole. Our results show that bosonic MIN exhibits a non-monotonic spatial behavior, deviating from the standard near-horizon decay. This suggests that quantum correlations are sensitive to the spatial structure of Hawking radiation and may provide signatures of the quantum atmosphere.

Key words: Black holes; quantum correlations; bosonic fields; quantum atmosphere; measurement-induced nonlocality

References

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