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The Functional Schrödinger Picture Approach to Many-Particle Systems
Chul Koo Kim, Sang Koo You
A self-contained pedagogical introduction to the functional Schrödinger picture method of many-body theory is given at a level suitable for graduate students and also for many-body…
Sine-Gordon Effective Potential beyond Gaussian Approximation
Wen-Fa Lu, Chul Koo Kim, Kyun Nahm
Combining an optimized expansion scheme in the spirit of the background field method with the Coleman's normal-ordering renormalization prescription, we calculate the effective pot…
Optimized Rayleigh-Schrödinger Expansion of the Effective Potential
Wen-Fa Lu, Chul Koo Kim, Kyun Nahm
An optimized Rayleigh-Schrödinger expansion scheme of solving the functional Schrödinger equation with an external source is proposed to calculate the effective potential beyond th…
Condensate of a charged boson fluid at non-integer dimensions
Sang-Hoon Kim, Chul Koo Kim, Kyun Nahm
Condensate of a charged boson fluid at non-integer dimensions between 2 and 3 is studied. Interaction between particles is assumed to be Coulombic, and Bogoliubov approximation is…
Magnetic Polarization Currents in Double Quantum Dot Devices
Sam Young Cho, Ross H. McKenzie, Kicheon Kang +1
We investigate coherent electron transport through a parallel circuit of two quantum dots, each of which has a single tunable energy level. Electrons tunneling via each dot from th…