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Quantum theory of a Bose–Einstein condensate out of equilibrium

2005/01/27 by Aranya B. Bhattacherjee, Aranya B Bhattacherjee, Vikash Ranjan +2
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Mechanical and Optical Resonators #Strong Light-Matter Interactions #cond-mat.stat-mech

paper · pdf · doi:10.1016/j.optcom.2005.01.048

published as Optics Communication, 249, 587-593 (2005) · Accepted for publication in Optics communication

arxiv created 2005/01/27 · openalex publication_date 2005/02/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider the interaction between a single-mode quantized perturbing external field and a Bose-Einstein condensate (BEC) out of equilibrium. The usual Rabi type oscillations between the ground and the excited state of the coherent topological modes are observed with a Rabi frequency modified by the two-body atomic interactions. Taking into account the granular structure of the external perturbing field reveals the well know phenomena of collapse and revival of the Rabi oscillations. In particular we find that atomic interactions reduce the Rabi frequency and also affect the collapse and revival sequence.

Citations