scholarly journals Quantum phase diagram of the two-dimensional transverse-field Ising model: Unconstrained tree tensor network and mapping analysis

2019 ◽  
Vol 99 (14) ◽  
Author(s):  
M. Sadrzadeh ◽  
R. Haghshenas ◽  
A. Langari
2006 ◽  
Vol 04 (04) ◽  
pp. 705-713 ◽  
Author(s):  
JUNPENG CAO ◽  
GANG XIONG ◽  
YUPENG WANG ◽  
X. R. WANG

We present an exact calculation of the global entanglement for the ground state of the transverse-field Ising model. We obtain the analytical expressions for the correlation functions, concurrence and the global entanglement of the system for arbitrary number of particles in the ground state. We prove that the inflexion of the global entanglement exactly corresponds to the quantum phase transition point of the system.


2016 ◽  
Vol 93 (3) ◽  
Author(s):  
Rubem Mondaini ◽  
Keith R. Fratus ◽  
Mark Srednicki ◽  
Marcos Rigol

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