Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Roberto Balbinot"'
Autor:
Roberto Balbinot, Alessandro Fabbri
Publikováno v:
Physics, Vol 5, Iss 4, Pp 968-982 (2023)
We analyze the correlations functions across the horizon in Hawking black hole radiation to reveal the correlations between Hawking particles and their partners. The effects of the underlying space–time on this are shown in various examples ranging
Externí odkaz:
https://doaj.org/article/656232f350e04555b041aff4ab65202c
Autor:
Roberto Balbinot, Alessandro Fabbri
Publikováno v:
Universe, Vol 10, Iss 1, p 18 (2023)
The Unruh vacuum is widely used as a quantum state to describe black hole evaporation since, near the horizon, it reproduces the physical state of a quantum field, the so-called “in-vacuum”, in the case where a black hole is formed by gravitation
Externí odkaz:
https://doaj.org/article/f233ca6dc99b4a64810b33751c062f58
Autor:
Roberto Balbinot, Alessandro Fabbri
Publikováno v:
Advances in High Energy Physics, Vol 2014 (2014)
We consider simple models of Bose-Einstein condensates to study analog pair-creation effects, namely, the Hawking effect from acoustic black holes and the dynamical Casimir effect in rapidly time-dependent backgrounds. We also focus on a proposal by
Externí odkaz:
https://doaj.org/article/76df23d0298d4857a294d1de87a1ffb4
Autor:
Roberto Balbinot, Alessandro Fabbri
We investigate, within the framework of quantum field theory in curved space, the correlations across the horizon of a black hole in order to highlight the particle-partner pair creation mechanism at the origin of Hawking radiation. The analysis conc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::989c3a3ad199e49e4ea140debfaff97a
http://arxiv.org/abs/2107.00702
http://arxiv.org/abs/2107.00702
Publikováno v:
Physical Review D. 102
The Fourier transform of the density-density correlation function in a Bose-Einstein condensate (BEC) analog black hole is a useful tool to investigate correlations between the Hawking particles and their partners. It can be expressed in terms of $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aef5e8dab55d2d90276a3689383733b0
https://doi.org/10.1103/physrevd.102.105005
https://doi.org/10.1103/physrevd.102.105005
Autor:
Roberto Balbinot, Alessandro Fabbri
Inspired by a recent experiment by Steinhauer and co-workers, we present a simple model which describes the formation of an acoustic black hole in a Bose-Einstein condensate, allowing an analytical computation of the evolution in time of the correspo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::858913cdd708b3733a4fdf7e46e2c871
http://arxiv.org/abs/2005.04443
http://arxiv.org/abs/2005.04443
Publikováno v:
Physical Review D
Physical Review D, American Physical Society, 2019, 100 (10), pp.105021. ⟨10.1103/PhysRevD.100.105021⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname
Phys.Rev.D
Phys.Rev.D, 2019, 100 (10), pp.105021. ⟨10.1103/PhysRevD.100.105021⟩
Physical Review D, American Physical Society, 2019, 100 (10), pp.105021. ⟨10.1103/PhysRevD.100.105021⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname
Phys.Rev.D
Phys.Rev.D, 2019, 100 (10), pp.105021. ⟨10.1103/PhysRevD.100.105021⟩
Phonon creation inside the horizons of acoustic black holes is investigated using two simple toy models. It is shown that, unlike what occurs in the exterior regions, the spectrum is not thermal. This non-thermality is due to the anomalous scattering
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b38bde556bbf5982a1cb5f2d7031563
http://hdl.handle.net/10261/208009
http://hdl.handle.net/10261/208009
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
We present a theory of the density correlations that appear in an atomic Bose-Einstein condensate as a consequence of the emission of correlated pairs of Bogoliubov phonons by a time-dependent atom-atom scattering length. This effect can be considere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::042f319b14f8c4949f976e99866ab5b5
https://doi.org/10.1140/epjd/e2009-00314-3
https://doi.org/10.1140/epjd/e2009-00314-3
A complete set of exact analytic solutions to the mode equation is found in the region exterior to the acoustic horizon for a class of 1D Bose-Einstein condensate (BEC) acoustic black holes. From these, analytic expressions for the scattering coeffic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2195faa6a7834571a577f82d131ed130
http://arxiv.org/abs/1512.08447
http://arxiv.org/abs/1512.08447
Autor:
Iacopo Carusotto, Roberto Balbinot
Publikováno v:
Nature Physics. 12:897-898
A milestone for quantum hydrodynamics may have been reached, with experiments on a black hole-like event horizon for sound waves providing strong evidence for a sonic analogue of Hawking radiation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c03eba5b476c0c09155d66bbef3de628
https://doi.org/10.1038/nphys3872
https://doi.org/10.1038/nphys3872