Momentum correlations as signature of sonic Hawking radiation in Bose-Einstein condensates

2017/12/31 by A. Fabbri, Alessandro Fabbri, Nicolas Pavloff +1
Mathematics · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Bose–Einstein condensate #Cosmology and Gravitation Theories #Entropy (arrow of time) #Hawking #Hawking radiation #Horizon #Mathematics #Momentum (technical analysis) #Physics #Position and momentum space #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum electrodynamics #Quantum mechanics #Signature (topology) #cond-mat.quant-gas #gr-qc #hep-th

paper · pdf · doi:10.21468/scipostphys.4.4.019

published as SciPost Phys. 4, 019 (2018)

arxiv created 2018/03/15 · openalex publication_date 2018/04/09 · arxiv updated 2018/04/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

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.

Citations

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