Time-dependent study of a black-hole laser in a flowing atomic condensate

Year: 2016

Authors: de Nova JRM., Finazzi S., Carusotto I.

Autors Affiliation: Univ Complutense Madrid, Dept Fis Mat, E-28040 Madrid, Spain;‎ Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel;‎ Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy;‎ Univ Trento, Dipartimento Fis, I-38123 Povo, Italy;‎ Univ Paris 07, Lab Mat & Phenomenes Quant, Batiment Condorcet, F-75205 Paris 13, France;‎ CNRS, Batiment Condorcet, F-75205 Paris 13, France;‎ IRCCS Ist Ric Farmacol Mario Negri, Lab Clin Epidemiol, GiViTI Coordinating Ctr, I-24020 Bergamo, Italy

Abstract: We numerically study the temporal evolution of a black-hole laser configuration displaying a pair of black- and white-hole horizons in a flowing atomic condensate. This configuration is initially prepared starting from a homogeneous flow via a suitable space-dependent change of the interaction constant and the evolution is then followed up to long times. Depending on the values of the system parameters, the system typically either converges to the lowest-energy solution by evaporating away the horizons or displays a continuous and periodic coherent emission of solitons. By making a physical comparison with optical laser devices, we identify the latter regime of continuous emission of solitons as the proper black-hole laser effect.

Journal/Review: PHYSICAL REVIEW A

Volume: 94 (4)      Pages from: 043616-1  to: 043616-15

KeyWords: ANALOG
DOI: 10.1103/PhysRevA.94.043616

Citations: 14
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