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Phase of a Weakly Interacting Bose System with a Time Spontaneous U(1) Symmetry Breaking

Zhao-Xian Yu, Zhi-Yong Jiao, Chong-long Zhang

International Journal of Theoretical PhysicsSep 17, 20070 citations

Spontaneous Breaking of U(1) Symmetry in Coupled Complex Sachdev-Ye-Kitaev Models

Igor R. Klebanov, Alexey Milekhin, Grigory Tarnopolsky +1 more

Bulletin of the American Physical SocietyMar 18, 20210 citations

Spin-orbit coupling in Bose-Einstein condensate and degenerate Fermi gases

Pengjun, Wang, Jing +1 more

我们考察我们一条纺纱轨道的最近的试验性的实现和调查(那么) 联合 Bose 爱因斯坦冷凝物(BEC ) 和量堕落费密气体。由使用二相反繁殖的拉曼激光并且控制二拉曼激光的不同频率设计原子光相互作用，我们首先学习那么在 BEC 联合。然后，我们学习因此在费密气体联合。我们作为那么在费密气体联合的特点在旋转动力学和平衡状态的动量分发不对称现象观察旋转 dephasing。清楚地揭示那么联合费密气体的性质，我们也学习描绘精力动量分散和量状态的旋转作文的解决动量的无线电频率光谱学。我们与不同原子密度在不同 helicity 分支观察费米子表面的变化，它显示费密表面拓扑学的 Lifshitz 转变变化能被进一步使系统凉下来发现。最后，我们学习 ultracold 费密气体的解决动量的拉曼光谱学。我们考察我们一条纺纱轨道的最近的试验性的实现和调查(那么) 联合 Bose 爱因斯坦冷凝物(BEC ) 和量堕落费密气体。由使用二相反繁殖的拉曼激光并且控制二拉曼激光的不同频率设计原子光相互作用，我们首先学习那么在 BEC 联合。然后，我们学习因此在费密气体联合。我们作为那么在费密气体联合的特点在旋转动力学和平衡状态的动量分发不对称现象观察旋转 dephasing。清楚地揭示那么联合费密气体的性质，我们也学习描绘精力动量分散和量状态的旋转作文的解决动量的无线电频率光谱学。我们与不同原子密度在不同 helicity 分支观察费米子表面的变化，它显示费密表面拓扑学的 Lifshitz 转变变化能被进一步使系统凉下来发现。最后，我们学习 ultracold 费密气体的解决动量的拉曼光谱学。

物理学前沿：英文版Jan 1, 20140 citations

Spontaneous U(1) Symmetry Breaking in Coupled Bose System

Ying Wang, Jinrong Xu, Li Chen +1 more

Adding a U(1) symmetry breaking term to Bogoliubov's truncated Hamiltonian H B for a weakly interacting coupled Bose system, by using the mean-field approximation rather than the c-number approximation, we find that, via a Feshbach resonance at zero temperature, the states of the coupled Bose system are generalized SU(1,1) ⊗ SU(1,1) coherent states. The Bose—Einstein condensation occurs in response to the spontaneous U(1) symmetry breaking.

Communications in Theoretical PhysicsJun 1, 20110 citations

Spontaneous U(1) symmetry breaking and Bose–Einstein condensation

Qian Feng, HUANG HONG-BIN, Qi Guan-Xiao +1 more

Based on Bogoliubov's truncated Hamiltonian H B for a weakly interacting Bose system, and adding a U(1) symmetry breaking term V 1/2 (λ a 0 +λ * a 0 + ) to H B , we show by using the coherent state theory and the mean-field approximation rather than the c-number approximations, that the Bose–Einstein condensation(BEC) occurs if and only if the U(1) symmetry of the system is spontaneously broken. The real ground state energy and the justification of the Bogoliubov c-number substitution are given by solving the Schrödinger eigenvalue equation and using the self-consistent condition.Based on Bogoliubov's truncated Hamiltonian H B for a weakly interacting Bose system, and adding a U(1) symmetry breaking term V 1/2 (λ a 0 +λ * a 0 + ) to H B , we show by using the coherent state theory and the mean-field approximation rather than the c-number approximations, that the Bose–Einstein condensation(BEC) occurs if and only if the U(1) symmetry of the system is spontaneously broken. The real ground state energy and the justification of the Bogoliubov c-number substitution are given by solving the Schrödinger eigenvalue equation and using the self-consistent condition.

Chinese PhysicsJul 1, 20066 citations

Spontaneous Symmetry Breaking in Coupled Bose–Einstein Condensates

Hal Tasaki

arXiv:1808.09212Journal of Statistical PhysicsNov 28, 20193 citations

Spontaneous U（1） Symmetry Breaking in Coupled Bose System

Abstract

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Spontaneous U（1） Symmetry Breaking in Coupled Bose System

Abstract

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