Thermodynamics of spin-orbit-coupled Bose-Einstein condensates
arXiv:1209.0346 · doi:10.1103/PhysRevA.86.063620
Abstract
In this paper we develop a quantum field approach to reveal the thermodynamic properties of the trapped BEC with the equal Rashba and Dresselhaus spin-orbit couplings. In the experimentally-feasible regime, the phase transition from the separate phase to the single minimum phase can be well driven by the tunable temperature. Moreover, the critical temperature, which is independent of the trapped potential, can be derived exactly. At the critical point, the specific heat has a large jump and can be thus regarded as a promising candidate to detect this temperature-driven phase transition. In addition, we obtain the analytical expressions for the specific heat and the entropy in the different phases. In the single minimum phase, the specific heat as well as the entropy are governed only by the Rabi frequency. However, in the separate phase with lower temperature, we find that they are determined only by the strength of spin-orbit coupling. Finally, the effect of the effective atom interaction is also addressed. In the separate phase, this effective atom interaction affects dramatically on the critical temperature and the corresponding thermodynamic properties.
8 pages, 6 figures
References in corpus (12)
- Non-Abelian Anyons and Topological Quantum Computation
- Spin-Orbit Coupled Spinor Bose-Einstein Condensates
- Collective Dipole Oscillation of a Spin-Orbit Coupled Bose-Einstein Condensate
- Quantum tri-criticality and phase transitions in spin-orbit coupled Bose-Einstein condensates
- Spin-orbit coupled Bose-Einstein condensates
- Exotic quantum spin models in spin-orbit-coupled Mott insulators
- Stability of ultracold atomic Bose condensates with Rashba spin-orbit coupling against quantum and thermal fluctuations
- Soliton Magnetization Dynamics in Spin-Orbit Coupled Bose-Einstein Condensates
- Josephson dynamics of a spin-orbit coupled Bose-Einstein condensate in a double well potential
- Symmetry classification of spin-orbit coupled spinor Bose-Einstein condensates
- Emergence of Chiral Magnetism in Spinor Bose-Einstein Condensate with Rashba Coupling
- Collective excitations across the BCS-BEC crossover induced by a synthetic Rashba spin-orbit coupling