Quantum phase transition in an atomic Bose gas with a Feshbach resonance

Preprint

18 December 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0312446

Abstract

We show that in an atomic Bose gas near a Feshbach resonance a quantum phase transition occurs between a phase with only a molecular Bose-Einstein condensate and a phase with both an atomic and a molecular Bose-Einstein condensate. We show that the transition is characterized by an Ising order parameter. We also determine the phase diagram of the gas as a function of magnetic field and temperature: the quantum critical point extends into a line of finite temperature Ising transitions.

Keywords

QUANTUM PHASE TRANSITION
DETERMINE THE PHASE
ATOMIC BOSE GAS
CRITICAL POINT
TEMPERATURE
BOSE GAS

All Related Versions

Version 1, 2003-12-18, ArXiv
Published version: Physical Review Letters, 93 (2), 020405.

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