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- Universidad de ZaragozaES168 papers
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7 papers · 1 filter
The Bose Hubbard model with squeezed dissipation
Fernando Quijandría, Uta Naether, Diego Porras +2
The stationary properties of the Bose-Hubbard model under squeezed dissipation are investigated. The dissipative model does not possess a symmetry, but parity is conserved:…
Thermal activation at moderate-to-high and high damping: finite barrier effects and force spectroscopy
J. J. Mazo, O. Y. Fajardo, D. Zueco
We study the thermal escape problem in the moderate-to-high and high damping regime of a system with a parabolic barrier. We present a formula that matches our numerical results ac…
Thermodynamic anomalies in open quantum systems: Strong coupling effects in the isotropic XY model
Michele Campisi, David Zueco, Peter Talkner
The exactly solvable model of a one dimensional isotropic XY spin chain is employed to study the thermodynamics of open systems. For this purpose the chain is subdivided into two p…
From Scale-free to Erdos-Renyi Networks
Jesus Gomez-Gardenes, Yamir Moreno
We analyze a model that interpolates between scale-free and Erdos-Renyi networks. The model introduced generates a one-parameter family of networks and allows to analyze the role o…
Solving spin quantum-master equations with matrix continued-fraction methods: application to superparamagnets
J. L. Garcia-Palacios, D. Zueco
We implement continued-fraction techniques to solve exactly quantum master equations for a spin with arbitrary S coupled to a (bosonic) thermal bath. The full spin density matrix i…
Caldeira--Leggett quantum master equation in Wigner phase space: continued-fraction solution and application to Brownian motion in periodic potentials
J. L. Garcia-Palacios, D. Zueco
The continued-fraction method to solve classical Fokker--Planck equations has been adapted to tackle quantum master equations of the Caldeira--Leggett type. This can be done taking…