Phase diagram of the dissipative quantum particle in a box
arXiv:0711.1325 · doi:10.1103/PhysRevB.78.085439
Abstract
We analyze the phase diagram of a quantum particle confined to a finite chain, subject to a dissipative environment described by an Ohmic spectral function. Analytical and numerical techniques are employed to explore both the perturbative and non-perturbative regime of the model. For small dissipation the coupling to the environment leads to a narrowing of the density distribution, and to a displacement towards the center of the array of accessible sites. For large values of the dissipation, we find a phase transition to a doubly degenerate phase which reflects the formation of an inhomogeneous effective potential within the array.
arXiv comment9 pages, 7 figures. Typos corrected
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