Quantum frictionless trajectories versus geodesics

Autor(en)

Luis C. Barbado, Carlos Barcelo, Luis J. Garay

Abstrakt

Moving particles outside a star will generally experience quantum friction caused by the Unruh radiation reaction. There exist however radial trajectories that lack this effect (in the outgoing radiation sector, and ignoring backscattering). Along these trajectories, observers perceive just stellar emission, without further contribution from the Unruh effect. They turn out to have the property that the variations of the Doppler and the gravitational shifts compensate each other. They are not geodesics, and their proper acceleration obeys an inverse square law, which means that it could in principle be generated by outgoing stellar radiation. In the case of a black hole emitting Hawking radiation, this may lead to a buoyancy scenario. The ingoing radiation sector has little effect and seems to slow down the fall even further.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Instituto de Astrofísica de Andalucía, Universidad Complutense De Madrid, Spanish National Research Council (CSIC)

Journal

Physical Review D

Band

92

Anzahl der Seiten

7

ISSN

1550-7998

DOI

https://doi.org/10.1103/PhysRevD.92.084031

Publikationsdatum

10-2015

Peer-reviewed

Ja

ÖFOS 2012

103024 Quantenfeldtheorie, 103028 Relativitätstheorie

Schlagwörter

ASJC Scopus Sachgebiete

Nuclear and High Energy Physics, Physics and Astronomy (miscellaneous)

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/ed2ba45a-1f0d-4cab-873e-0a77aa5e170e