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Author (up) Boiron, D.; Fabbri, A.; Larre, P.E.; Pavloff, N.; Westbrook, C.I.; Zin, P.
Title Quantum Signature of Analog Hawking Radiation in Momentum Space Type Journal Article
Year 2015 Publication Physical Review Letters Abbreviated Journal Phys. Rev. Lett.
Volume 115 Issue 2 Pages 025301 - 5pp
Keywords
Abstract We consider a sonic analog of a black hole realized in the one-dimensional flow of a Bose-Einstein condensate. Our theoretical analysis demonstrates that one-and two-body momentum distributions accessible by present-day experimental techniques provide clear direct evidence (i) of the occurrence of a sonic horizon, (ii) of the associated acoustic Hawking radiation, and (iii) of the quantum nature of the Hawking process. The signature of the quantum behavior persists even at temperatures larger than the chemical potential.
Address [Boiron, D.; Westbrook, C. I.] Univ Paris Sud, CNRS, Inst Opt, Lab Charles Fabry, F-91127 Palaiseau, France, Email: afabbri@ific.uv.es;
Corporate Author Thesis
Publisher Amer Physical Soc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0031-9007 ISBN Medium
Area Expedition Conference
Notes WOS:000357500500004 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 2294
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Author (up) Fabbri, A.; Pavloff, N.
Title Momentum correlations as signature of sonic Hawking radiation in Bose-Einstein condensates Type Journal Article
Year 2018 Publication Scipost Physics Abbreviated Journal SciPost Phys.
Volume 4 Issue 4 Pages 019 - 45pp
Keywords
Abstract We study the two-body momentum correlation signal in a quasi one dimensional Bose-Einstein condensate in the presence of a sonic horizon. We identify the relevant correlation lines in momentum space and compute the intensity of the corresponding signal. We consider a set of different experimental procedures and identify the specific issues of each measuring process. We show that some inter-channel correlations, in particular the Hawking quantum-partner one, are particularly well adapted for witnessing quantum non-separability, being resilient to the effects of temperature and/or quantum quenches.
Address [Fabbri, Alessandro] Museo Stor Fis & Ctr Studi & Ric Enrico Fermi, Ctr Fermi, Piazza Viminale 1, I-00184 Rome, Italy
Corporate Author Thesis
Publisher Scipost Foundation Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2542-4653 ISBN Medium
Area Expedition Conference
Notes WOS:000432739900001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 3583
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Author (up) Martone, G.I.; Larre, P.E.; Fabbri, A.; Pavloff, N.
Title Momentum distribution and coherence of a weakly interacting Bose gas after a quench Type Journal Article
Year 2018 Publication Physical Review A Abbreviated Journal Phys. Rev. A
Volume 98 Issue 6 Pages 063617 - 21pp
Keywords
Abstract We consider a weakly interacting uniform atomic Bose gas with a time-dependent nonlinear coupling constant. By developing a suitable Bogoliubov treatment we investigate the time evolution of several observables, including the momentum distribution, the degree of coherence in the system, and their dependence on dimensionality and temperature. We rigorously prove that the low-momentum Bogoliubov modes remain frozen during the whole evolution, while the high-momentum ones adiabatically follow the change in time of the interaction strength. At intermediate momenta we point out the occurrence of oscillations, which are analogous to Sakharov oscillations. We identify two wide classes of time-dependent behaviors of the coupling for which an exact solution of the problem can be found, allowing for an analytic computation of all the relevant observables. A special emphasis is put on the study of the coherence property of the system in one spatial dimension. We show that the system exhibits a smooth “light-cone effect,” with typically no prethermalization.
Address [Martone, Giovanni I.; Pavloff, Nicolas] Univ Paris Saclay, Univ Paris Sud, CNRS, LPTMS,UMR 8626, F-91405 Orsay, France
Corporate Author Thesis
Publisher Amer Physical Soc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2469-9926 ISBN Medium
Area Expedition Conference
Notes WOS:000452949900009 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 3841
Permanent link to this record