"Six-vertex model and Quantum XXZ Hamiltonian"의 두 판 사이의 차이

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41번째 줄: 41번째 줄:
 
<h5>entropy of two-dimensional ice</h5>
 
<h5>entropy of two-dimensional ice</h5>
  
*  entropy is given as<br><math>Mk\ln W</math> where M is the number of molecules and <math>W=(4/3)^{3/2}</math><br>
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*  entropy is given as<br><math>Mk\ln W</math> where M is the number of molecules and <math>W=(4/3)^{3/2}=1.53960\cdots</math><br>
  
 
 
 
 
152번째 줄: 152번째 줄:
 
** V. Fridkin, Yu. Stroganov, D. Zagier, 2000
 
** V. Fridkin, Yu. Stroganov, D. Zagier, 2000
 
* [http://arxiv.org/abs/hep-th/9204064 Diagonalization of the XXZ Hamiltonian by Vertex Operators]<br>
 
* [http://arxiv.org/abs/hep-th/9204064 Diagonalization of the XXZ Hamiltonian by Vertex Operators]<br>
** Authors: Brian Davies, Omar Foda, Michio Jimbo, Tetsuji Miwa, Atsushi Nakayashiki, 1993
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** Brian Davies, Omar Foda, Michio Jimbo, Tetsuji Miwa, Atsushi Nakayashiki, 1993
 
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* [http://dx.doi.org/10.1103/PhysRevLett.18.1046 Exact Solution of the F Model of An Antiferroelectric]<br>
* Exact Solution of the F Model of An Antiferroelectric<br>
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** E.H. Lieb. <em style="">Phys. Rev.</em> '''18''' (1967), p. 1046.
** E.H. Lieb. <em style="">Phys. Rev.</em> '''18''' (1967), p. 1046. [http://www.sciencedirect.com/science?_ob=RedirectURL&_method=outwardLink&_partnerName=3&_originPage=article&_zone=art_page&_targetURL=http%3A%2F%2Fdx.doi.org%2F10.1103%252FPhysRevLett.18.1046&_acct=C000059607&_version=1&_userid=4420&md5=d9763691bc80a397c59ec4e9e3ef0891 Full Text via CrossRef]
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* [http://dx.doi.org/10.1103/PhysRevLett.19.108 Exact Solution of the Two-Dimensional Slater KDP Model of a Ferroelectric]<br>
Exact Solution of the Two-Dimensional Slater KDP Model of a Ferroelectric<br>
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** E.H. Lieb. <em style="">Phys. Rev.</em> '''19''' (1967), p. 108.
** E.H. Lieb. <em style="">Phys. Rev.</em> '''19''' (1967), p. 108. [http://www.sciencedirect.com/science?_ob=RedirectURL&_method=outwardLink&_partnerName=3&_originPage=article&_zone=art_page&_targetURL=http%3A%2F%2Fdx.doi.org%2F10.1103%252FPhysRevLett.19.108&_acct=C000059607&_version=1&_userid=4420&md5=4e12fda035ad9b1ae9735cb48f90e619 Full Text via CrossRef]
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* [http://dx.doi.org/10.1103/PhysRevLett.19.103 Exact Solution of a Two-Dimensional Model for Hydrogen-Bonded Crystals]<br>
Exact Solution of a Two-Dimensional Model for Hydrogen-Bonded Crystals<br>
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** B. Sutherland. <em style="line-height: 2em;">Phys. Rev.</em> '''19''' (1967), p. 103.
** B. Sutherland. <em style="line-height: 2em;">Phys. Rev.</em> '''19''' (1967), p. 103. [http://www.sciencedirect.com/science?_ob=RedirectURL&_method=outwardLink&_partnerName=3&_originPage=article&_zone=art_page&_targetURL=http%3A%2F%2Fdx.doi.org%2F10.1103%252FPhysRevLett.19.103&_acct=C000059607&_version=1&_userid=4420&md5=bbeb93e683f2654b0eadeaa7cbd82f5c Full Text via CrossRef]
 
 
* [http://dx.doi.org/10.1103/PhysRevLett.18.692 Exact Solution of the Problem of the Entropy of Two-Dimensional Ice]<br>
 
* [http://dx.doi.org/10.1103/PhysRevLett.18.692 Exact Solution of the Problem of the Entropy of Two-Dimensional Ice]<br>
 
** E. H. Lieb, [http://link.aps.org/doi/10.1103/PhysRevLett.18.692 Phys. Rev. Letters 18, 692 (1967)]
 
** E. H. Lieb, [http://link.aps.org/doi/10.1103/PhysRevLett.18.692 Phys. Rev. Letters 18, 692 (1967)]
167번째 줄: 166번째 줄:
 
** C. N. Yang, C. P. Yang, 1966
 
** C. N. Yang, C. P. Yang, 1966
  
* http://dx.doi.org/10.1103/PhysRevLett.19.103
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* http://dx.doi.org/10.1103/PhysRevLett.19.108
  
 
 
 
 

2010년 8월 3일 (화) 11:19 판

introduction
  • ice-type model, R model, Rys model
  • XXZ spin chain and the six-vertex transfer matrix have the same eigenvectors
  • Boltzmann weights
  • monodromy matrix
  • trace of monodromy matrix is the transfer matrix
  • power of transfer matrix becomes the partition function

 

 

types of six vertex models
  • on a square lattice with periodic boundary conditions
  • on a square lattice with domain wall boundary conditions

 

 

transfer matrix
  • finding eigenvalues and eigenvectors of transfer matrix is crucial
  • Bethe ansatz equation is used to find the eigenvectors and eigenvalues of the transfer matrix
  • partition function  is calculated in terms of the eigenvalues of the transfer matrix
  • the below is from Yang-Baxter equation
  • transfer matrix is builtup from matrices of  Boltzmann weights
  • we need the trasfer matrices coming from different set of Boltzman weights commute 
  • partition function = trace of power of transfer matrices
  • so the problem of solving the model is reduced to the computation of this trace

 

 

entropy of two-dimensional ice
  • entropy is given as
    \(Mk\ln W\) where M is the number of molecules and \(W=(4/3)^{3/2}=1.53960\cdots\)

 

 

free energy
  • \(F=-kT \ln Z\)

 

 

partition function

 

 

correlation functions

 

 

anistropic one-dimensional Heisenberg model (XXZ model)
  • Heisenberg spin chain model
  • XXZ model or XXZ spin chain
  • first solved by Bethe 
  • Yang and Yang
  • ground state eigevector for Hamiltonian  is a common eigenvector

 

 

related items

 

 

books

 

 

encyclopedia

 

 

blogs

 

 

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By JOEL L. LEBOWITZ

 

 

Method for calculating finite size corrections in Bethe ansatz systems: Heisenberg chain and six-vertex model
de Vega, H. J.; Woynarovich, F.

 

 

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