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Ruelle-Lanford functions for quantum spin systems
Ruelle-Lanford functions quantum spin systems
2010/10/27
We prove a large deviation principle for the expectation of macroscopic observables in quantum (and classical) Gibbs states. Our proof is based on Ruelle-Lanford functions [20, 34] and direct subaddit...
Low energy states dynamic of entanglement for spin systems
Low energy states dynamic of entanglement spin systems
2010/10/20
We have composed the ideas of quantum renormalization group and quantum information by
exploring the low energy states dynamic of entanglement resources of a system close to its quantum critical poin...
Evaluation of ground state entanglement in spin systems with the random phase approximation
Evaluation ground state entanglement spin systems random phase approximation
2010/10/19
We discuss a general treatment based on the mean field plus random phase approximation (RPA)
for the evaluation of subsystem entropies and negativities in ground states of spin systems. The approach ...
Relationship between probabilities of the state transfers and entanglements in spin systems with simple geometrical configurations
probabilities of the state transfers entanglements in spin systems geometrical configurations
2010/4/9
In this paper we derive analytical relations between probabilities of the excited state transfers and entanglements calculated by both the Wootters and positive partial transpose (PPT) criteria for th...
Entanglement vs. gap for one-dimensional spin systems
Entanglement one-dimensional spin systems
2010/4/8
We study the relationship between entanglement and spectral gap for local Hamiltonians in one dimension. The area law for a one-dimensional system states that for the ground state, the entanglement of...
Effective-Field Theory on High Spin Systems with Biaxial Crystal Field
effective-field theory magnetic properties biaxial crystal field quantum effects
2007/8/15
2006Vol.46No.6pp.1105-1108DOI:
Effective-Field Theory on High Spin Systems with Biaxial Crystal Field
JIANG Wei,1 GUO An-Bang,1 LI Xin,1 WANG Xi-Kun,1 and
BAI Bao-Dong2
...
On the Ground State of Spin Systems with Orbital Degeneracy
SU(4) symmetry spin liquid spin order
orbital order
2007/8/15
2002Vol.37No.1pp.105-110DOI:
On the Ground State of Spin Systems with Orbital Degeneracy
SHI Da-Ning,1,2 LI Ning1 and YANG Zhi-Hong1
1 College of Science, Nanjing Univ...