Magnetic impurity coupled to a quantum spin chain: A quantum Monte Carlo study

1996 ◽  
Vol 54 (21) ◽  
pp. 15171-15177 ◽  
Author(s):  
W. Zhang ◽  
J. Igarashi ◽  
P. Fulde
Keyword(s):  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Spin Chain ◽  
Magnetic Impurity ◽  
Monte Carlo Study ◽  
Quantum Spin ◽  
Quantum Spin Chain

scholarly journals Quantum spin models with long-range interactions and tunnelings: a quantum Monte Carlo study

2012 ◽  
Vol 14 (11) ◽  
pp. 113006 ◽  
Author(s):  
Michał Maik ◽  
Philipp Hauke ◽  
Omjyoti Dutta ◽  
Jakub Zakrzewski ◽  
Maciej Lewenstein
Keyword(s):  
Monte Carlo ◽  
Long Range ◽  
Quantum Monte Carlo ◽  
Monte Carlo Study ◽  
Quantum Spin ◽  
Spin Models ◽  
Long Range Interactions ◽  
Quantum Spin Models

QUANTUM MONTE CARLO STUDY ON RANDOM BOND MIXED-SPIN CHAIN

2007 ◽  
Vol 21 (23n24) ◽  
pp. 4196-4200
Author(s):  
HONGWEI FAN ◽  
ZHAOXIN XU ◽  
HEPING YING
Keyword(s):  
Monte Carlo ◽  
Critical Point ◽  
Quantum Monte Carlo ◽  
Spin Chain ◽  
Quantum Critical Point ◽  
Monte Carlo Study ◽  
Its Region ◽  
Pure System ◽  
Mixed Spin ◽  
System Quantum

The effects of bond randomness on the quantum mixed-spin chain 1-1-1/2-1/2 are investigated by a quantum Monte Carlo study. We find that around the critical point of original pure system, quantum Griffiths phases appears, and its region is enlarged with increasing of bond randomness. Moreover, the critical behavior of the original quantum critical point has been changed by the randomness.

Quantum Monte Carlo Study of Entanglement in Quantum Spin Systems

2005 ◽  
Vol 140 (3-4) ◽  
pp. 293-302 ◽  
Author(s):  
Tommaso Roscilde ◽  
Paola Verrucchi ◽  
Andrea Fubini ◽  
Stephan Haas ◽  
Valerio Tognetti
Keyword(s):  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Monte Carlo Study ◽  
Quantum Spin ◽  
Spin Systems ◽  
Quantum Spin Systems

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.

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