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arXiv · 0801.4689

Quantum phase transitions in an effective Hamiltonian: fast and slow systems

Isabel Sainz·Andrei B. Klimov·Luis Roa
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Abstract

An effective Hamiltonian describing interaction between generic "fast" and a "slow" systems is obtained in the strong interaction limit. The result is applied for studying the effect of quantum phase transition as a bifurcation of the ground state of the "slow subsystem" in the thermodynamic limit. Examples as atom-field and atom-atom interactions are analyzed in detail.

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Isabel Sainz, Andrei B. Klimov, Luis Roa. 2008-01-30. Quantum phase transitions in an effective Hamiltonian: fast and slow systems. https://doi.org/10.1088/1751-8113/41/35/355301

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