Eur. Phys. J. Plus (2013) 128: 16
https://doi.org/10.1140/epjp/i2013-13016-2

Regular Article

Hawking effect in BECs acoustic white holes

¹ Dipartimento di Fisica dell’Università di Bologna and INFN, Sezione di Bologna, Via Irnerio 46, 40126, Bologna, Italy
² Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi”, Piazza del Viminale 1, 00184, Roma, Italy
³ Departamento de Fısica Teórica and IFIC, Universidad de Valencia-CSIC, C. Dr. Moliner 50, 46100, Burjassot, Spain

^* e-mail: balbinot@bo.infn.it

Received: 16 January 2013
Accepted: 1 February 2013
Published online: 18 February 2013

Abstract

Bogoliubov pseudoparticle creation in a BEC undergoing a WH-like flow is investigated analytically in the case of a one-dimensional geometry with stepwise homogeneous regions. Comparison of the results with those corresponding to a BH flow is performed. The implications for the analogous gravitational problem is discussed.