Hawking radiation for detectors in superposition of locations outside a black hole

Autor(en)

Jerzy Paczos, Luis C. Barbado

Abstrakt

Hawking radiation is the proposed thermal black-body radiation of quantum nature emitted from a black hole. One common way to give an account of Hawking radiation is to consider a detector that follows a static trajectory in the vicinity of a black hole and interacts with the quantum field of the radiation. In the present work, we study the Hawking radiation perceived by a detector that follows a quantum superposition of static trajectories in Schwarzschild spacetime, instead of a unique well-defined trajectory. We analyze the quantum state of the detector after the interaction with a massless real scalar field. We find that for certain trajectories and excitation levels, there are nonvanishing coherences in the final state of the detector. We then examine the dependence of these coherences on the trajectories followed by the detector and relate them to the distinguishability of the different possible states in which the field is left after the excitation of the detector. We interpret our results in terms of the spatial distribution and propagation of particles of the quantum field.

Organisation(en)

Forschungsverbund Quantum Aspects of Space Time, Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Stockholm University, Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Physical Review D

Band

108

Anzahl der Seiten

14

ISSN

2470-0010

DOI

https://doi.org/10.1103/PhysRevD.108.125015

Publikationsdatum

12-2023

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik

ASJC Scopus Sachgebiete

Nuclear and High Energy Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c0bf12b0-d306-47af-9129-1824e34609f2