2026-06-28T20:20:12Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/445312023-08-28T03:15:04Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Barceló, C.
author
Garay Elizondo, Luis Javier
author
Jannes, G.
2023-06-20T03:50:16Z
2023-06-20T03:50:16Z
2009-01
1550-7998
10.1103/PhysRevD.79.024016
https://hdl.handle.net/20.500.14352/44531
http://dx.doi.org/10.1103/PhysRevD.79.024016
http://journals.aps.orghttp://inspirehep.net/record/791540/files/arXiv%3A0807.4147.pdf
We analyze the Hawking radiation process due to collapsing configurations in the presence of superluminal modifications of the dispersion relation. With such superluminal dispersion relations, the horizon effectively becomes a frequency-dependent concept. In particular, at every moment of the collapse, there is a critical frequency above which no horizon is experienced. We show that, as a consequence, the late-time radiation suffers strong modifications, both quantitative and qualitative, compared to the standard Hawking picture. Concretely, we show that the radiation spectrum becomes dependent on the measuring time, on the surface gravities associated with different frequencies, and on the critical frequency. Even if the critical frequency is well above the Planck scale, important modifications still show up.
eng
Sensitivity of Hawking radiation to superluminal dispersion relations
journal article
URL
https://docta.ucm.es/bitstreams/ad78209a-e0bd-44cf-83ef-dc59ddf96b6e/download
File
MD5
bc2f1dbd9264776fcbaf2982ea1cc971
392613
application/pdf
Garay16.pdf