scholarly journals Protecting quantum correlations of the XXZ model by topological boundary conditions

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Shi-Ping Zeng ◽  
Hai-Long Shi ◽  
Xu Zhou ◽  
Xiao-Hui Wang ◽  
Si-Yuan Liu ◽  
...  
Keyword(s):  
Boundary Conditions ◽  
Quantum Correlations ◽  
Xxz Model ◽  
Topological Boundary

scholarly journals Entanglement and fluctuations in the XXZ model with power-law interactions

2017 ◽  
Vol 95 (24) ◽  
Author(s):  
Irénée Frérot ◽  
Piero Naldesi ◽  
Tommaso Roscilde
Keyword(s):  
Power Law ◽  
Xxz Model

scholarly journals Rigorous bounds on dynamical response functions and time-translation symmetry breaking

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Marko Medenjak ◽  
Tomaz Prosen ◽  
Lenart Zadnik
Keyword(s):  
Dynamical Response ◽  
Response Functions ◽  
Xxz Model ◽  
Dynamical Symmetries ◽  
Time Translation ◽  
Spatially Inhomogeneous ◽  
Translation Symmetry ◽  
Local Operators ◽  
Rigorous Bounds ◽  
Translation Symmetry Breaking

Dynamical response functions are standard tools for probing local physics near the equilibrium. They provide information about relaxation properties after the equilibrium state is weakly perturbed. In this paper we focus on systems which break the assumption of thermalization by exhibiting persistent temporal oscillations. We provide rigorous bounds on the Fourier components of dynamical response functions in terms of extensive or local dynamical symmetries, i.e., extensive or local operators with periodic time dependence. Additionally, we discuss the effects of spatially inhomogeneous dynamical symmetries. The bounds are explicitly implemented on the example of an interacting Floquet system, specifically in the integrable Trotterization of the Heisenberg XXZ model.

scholarly journals Interaction distance in the extended XXZ model

2019 ◽  
Vol 100 (23) ◽  
Author(s):  
Kristian Patrick ◽  
Vincent Caudrelier ◽  
Zlatko Papić ◽  
Jiannis K. Pachos
Keyword(s):  
Xxz Model ◽  
Interaction Distance

Extended proof of long-range order in the two-dimensional quantum spin-1/2 XXZ-model at T=0

1991 ◽  
Vol 1 (5) ◽  
pp. 647-657 ◽  
Author(s):  
Hans-Aloys Wischmann ◽  
Erwin Müller-Hartmann
Keyword(s):  
Long Range ◽  
Quantum Spin ◽  
Range Order ◽  
Long Range Order ◽  
Two Dimensional ◽  
Xxz Model

Influence of magnetic field on swap operation in Heisenberg XXZ model

2009 ◽  
Vol 404 (8-11) ◽  
pp. 1116-1118 ◽  
Author(s):  
Jia Liu ◽  
Guo-Feng Zhang ◽  
Zi-Yu Chen
Keyword(s):  
Magnetic Field ◽  
Xxz Model ◽  
Swap Operation ◽  
Heisenberg Xxz Model
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