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Quench Dynamics and Emergence of Phase Separation in Two-Component Atomic Bose Gases at Zero Temperature and above the BEC Critical Temperature
Chih-Chun Chien, Fred Cooper
We study the dynamics of two-component atomic Bose gases initially in a mixture encountering a sudden quench of the inter-species interactions. The dynamics above the critical temp…
Nonlinear Dirac equation solitary waves in external fields
Franz G. Mertens, Niurka R. Quintero, Fred Cooper +2
We consider the nonlinear Dirac equations (NLDE's) in 1+1 dimension with scalar-scalar self interaction $\frac{g^2}{κ+1} ({\bPsi} Ψ)^{κ+1}$ in the presence of various external elec…
Large-N approximation for single- and two-component dilute Bose gases
Chih-Chun Chien, Fred Cooper, Eddy Timmermans
We discuss the mean-field theories obtained from the leading order in a large- approximation for one- and two- component dilute Bose gases. For a one-component Bose gas this app…
Mean-field description of pairing effects, BKT physics, and superfluidity in 2D Bose gases
Chih-Chun Chien, Jianhuang She, Fred Cooper
We derive a mean-field description for two-dimensional (2D) interacting Bose gases at arbitrary temperatures. We find that genuine Bose-Einstein condensation with long-range cohere…