Phase diagram of the Ashkin-Teller quantum spin chain

1994 ◽  
Vol 50 (1) ◽  
pp. 559-562 ◽  
Author(s):  
Masanori Yamanaka ◽  
Yasuhiro Hatsugai ◽  
Mahito Kohmoto
Keyword(s):  
Phase Diagram ◽  
Spin Chain ◽  
Quantum Spin ◽  
Quantum Spin Chain

scholarly journals Phase diagram of theS=1/2 quantum spin chain with bond alternation

1993 ◽  
Vol 48 (13) ◽  
pp. 9555-9563 ◽  
Author(s):  
M. Yamanaka ◽  
Y. Hatsugai ◽  
M. Kohmoto
Keyword(s):  
Phase Diagram ◽  
Spin Chain ◽  
Quantum Spin ◽  
Quantum Spin Chain ◽  
Bond Alternation

scholarly journals Ground-state phase diagram of S = 2 quantum spin chain with the XXZ and on-site anisotropies

2011 ◽  
Vol 302 ◽  
pp. 012014 ◽  
Author(s):  
Kiyomi Okamoto ◽  
Takashi Tonegawa ◽  
Hiroki Nakano ◽  
Tôru Sakai ◽  
Kiyohide Nomura ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Ground State ◽  
Spin Chain ◽  
Quantum Spin ◽  
Quantum Spin Chain ◽  
Ground State Phase Diagram

scholarly journals FUSED POTTS MODELS

1993 ◽  
Vol 08 (29) ◽  
pp. 5165-5233 ◽  
Author(s):  
W.M. KOO ◽  
H. SALEUR
Keyword(s):  
Phase Diagram ◽  
Spin Chain ◽  
Nearest Neighbor ◽  
Valence Bond ◽  
Quantum Spin ◽  
Transition Line ◽  
Vertex Model ◽  
Quantum Spin Chain ◽  
General Technique ◽  
Potts Models

Generalizing the mapping between the Potts model with nearest neighbor interaction and the six-vertex model, we build a family of “fused Potts models” related to the spin k/2 U q su (2) invariant vertex model and quantum spin chain. These Potts models still have variables taking values 1, …,Q[Formula: see text] but they have a set of complicated multispin interactions. The general technique to compute these interactions, the resulting lattice geometry, symmetries, and the detailed examples of k=2, 3 are given. For Q>4, spontaneous magnetizations are computed on the integrable first order phase transition line, generalizing Baxter’s results for k=1. For Q≤4, we discuss the full phase diagram of the spin 1 (k=2) anisotropic and U q su (2) invariant quantum spin chain [it reduces in the limit Q=4 (q=1) to the much studied phase diagram of the isotropic spin 1 quantum spin chain], Several critical lines and massless phases are exhibited. The appropriate generalization of the valence bond state method of Affleck et al. is worked out.

scholarly journals Field Dependent Phase Diagram of the Quantum Spin Chain (CH3)2NH2CuCl3

2006 ◽  
Author(s):  
M. B. Stone ◽  
W. Tian ◽  
T. P. Murphy ◽  
S. E. Nagler ◽  
D. G. Mandrus
Keyword(s):  
Phase Diagram ◽  
Spin Chain ◽  
Quantum Spin ◽  
Quantum Spin Chain ◽  
Field Dependent

scholarly journals T − W relation and free energy of the Heisenberg chain at a finite temperature

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Pengcheng Lu ◽  
Yi Qiao ◽  
Junpeng Cao ◽  
Wen-Li Yang ◽  
Kang jie Shi ◽  
...  
Keyword(s):  
Free Energy ◽  
Spin Chain ◽  
Quantum Spin ◽  
Heisenberg Chain ◽  
Quantum Spin Chain ◽  
Heisenberg Spin ◽  
Heisenberg Spin Chain ◽  
Lattice Quantum ◽  
Quantum Integrable Models ◽  
Invariant Quantum

Abstract A new nonlinear integral equation (NLIE) describing the thermodynamics of the Heisenberg spin chain is derived based on the t − W relation of the quantum transfer matrices. The free energy of the system in a magnetic field is thus obtained by solving the NLIE. This method can be generalized to other lattice quantum integrable models. Taking the SU(3)-invariant quantum spin chain as an example, we construct the corre- sponding NLIEs and compute the free energy. The present results coincide exactly with those obtained via other methods previously.

scholarly journals Quantum spin chain dissipative mean-field dynamics

2018 ◽  
Vol 51 (32) ◽  
pp. 325001 ◽  
Author(s):  
F Benatti ◽  
F Carollo ◽  
R Floreanini ◽  
H Narnhofer
Keyword(s):  
Spin Chain ◽  
Mean Field ◽  
Quantum Spin ◽  
Quantum Spin Chain
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