Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2010-10-13
Chemical Physics 375 (2010) 187-194
Physics
Condensed Matter
Statistical Mechanics
12 pages, 8 figures. Published in the special issue of Chemical Physics "Stochastic processes in Physics and Chemistry" (in ho
Scientific paper
10.1016/j.chemphys.2010.04.026
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 parts, one part is considered as the system while the rest as the environment or bath. The equilibrium properties of the system display several anomalous aspects such as negative entropies, negative specific heat, negative susceptibilities in dependence of temperature and coupling strength between system and bath. The statistical mechanics of this system is studied in terms of a reduced density matrix. At zero temperature and for a certain parameter values we observe a change of the ground state, a situation akin to a quantum phase transition.
Campisi Michele
Talkner Peter
Zueco David
No associations
LandOfFree
Thermodynamic anomalies in open quantum systems: Strong coupling effects in the isotropic XY model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermodynamic anomalies in open quantum systems: Strong coupling effects in the isotropic XY model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermodynamic anomalies in open quantum systems: Strong coupling effects in the isotropic XY model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-226439