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The XXZ Heisenberg model on random surfaces.

by unknown authors
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From spin to anyon notation: The XXZ Heisenberg model as a D3 (or su(2)4) anyon chain

by Peter E. Finch
"... We discuss a relationship between certain one-dimensional quantum spin chains and anyon chains. In particular we show how the XXZ Heisenberg chain is realised as a D3 (alternately su(2)4) anyon model. We find the difference between the models lie primarily in the choice of boundary conditions. 1 ..."
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We discuss a relationship between certain one-dimensional quantum spin chains and anyon chains. In particular we show how the XXZ Heisenberg chain is realised as a D3 (alternately su(2)4) anyon model. We find the difference between the models lie primarily in the choice of boundary conditions. 1

The Thermodynamics of the XXZ Heisenberg Chain with Impurities

by Boyu Hou A, Kangjie Shi A, Ruihong Yue A, Shaoyou Zhao A , 1999
"... In this paper, we discuss the effect of the arbitrary spin impurities to the spin-1/2 and spin-1 XXZ model. The effect of ground state, the free energy, the magnetic susceptibility, the specific heat and the Kondo temperature are given by using the thermodynamic Bethe ansatz equation. ..."
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In this paper, we discuss the effect of the arbitrary spin impurities to the spin-1/2 and spin-1 XXZ model. The effect of ground state, the free energy, the magnetic susceptibility, the specific heat and the Kondo temperature are given by using the thermodynamic Bethe ansatz equation.

The renormalization of entanglement in the anisotropic Heisenberg (XXZ) model

by M. Kargarian, R. Jafari, A. Langari , 2008
"... to study the quantum information properties of the anisotropic s=1/2 Heisenberg chain. We have investigated the underlying quantum information properties like the evolution of concurrence, entanglement entropy, nonanalytic behaviours and the scaling close to the quantum critical point of the model. ..."
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to study the quantum information properties of the anisotropic s=1/2 Heisenberg chain. We have investigated the underlying quantum information properties like the evolution of concurrence, entanglement entropy, nonanalytic behaviours and the scaling close to the quantum critical point of the model

Exactly solvable Ising–Heisenberg chain with triangular XXZ-Heisenberg plaquettes.

by Diana Antonosyan, Stefano Bellucci, Vadim Ohanyan , 807
"... A mixed Ising-Heisenberg spin system consisting of triangular XXZ-Heisenberg spin clusters assembled into a chain by alternating with Ising spins interacting to all three spins in the triangle is considered. The exact solution of the model is given in terms of the generalized decoration–iteration ma ..."
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A mixed Ising-Heisenberg spin system consisting of triangular XXZ-Heisenberg spin clusters assembled into a chain by alternating with Ising spins interacting to all three spins in the triangle is considered. The exact solution of the model is given in terms of the generalized decoration

Non-equivalence between Heisenberg XXZ spin chain and Thirring model

by T. Fujita, T. Kobayashi, M. Hiramoto , 2003
"... The Bethe ansatz equations for the spin 1/2 Heisenberg XXZ spin chain are numerically solved, and the energy eigenvalues are determined for the anti-ferromagnetic case. We examine the relation between the XXZ spin chain and the Thirring model, and show that the spectrum of the XXZ spin chain is diff ..."
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The Bethe ansatz equations for the spin 1/2 Heisenberg XXZ spin chain are numerically solved, and the energy eigenvalues are determined for the anti-ferromagnetic case. We examine the relation between the XXZ spin chain and the Thirring model, and show that the spectrum of the XXZ spin chain

Is There A Phase Transition in the Isotropic Heisenberg Antiferromagnet on the Triangular Lattice?

by W. Stephan, B. W. Southern , 2008
"... The phase diagram of the classical anisotropic (XXZ) Heisenberg model on the 2-dimensional triangular lattice is investigated using Monte Carlo methods. In the easy-axis limit, two finite temperature vortex unbinding transitions have been observed. In the easy-plane limit, there also appear to be tw ..."
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The phase diagram of the classical anisotropic (XXZ) Heisenberg model on the 2-dimensional triangular lattice is investigated using Monte Carlo methods. In the easy-axis limit, two finite temperature vortex unbinding transitions have been observed. In the easy-plane limit, there also appear

The Hamiltonian of the anisotropic Heisenberg-Ising model, or the XXZ model, has the form [1]

by A. A. Belavin, S. Yu. Gubanov , 2002
"... conditions ..."
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conditions

The quantum structure of spacetime at the Planck scale and quantum fields

by Sergio Doplicher, Klaus Fredenhagen, John E. Roberts - COMMUN. MATH. PHYS. 172, 187–220 (1995) , 1995
"... We propose uncertainty relations for the different coordinates of spacetime events, motivated by Heisenberg’s principle and by Einstein’s theory of classical gravity. A model of Quantum Spacetime is then discussed where the commutation relations exactly implement our uncertainty relations. We outl ..."
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We propose uncertainty relations for the different coordinates of spacetime events, motivated by Heisenberg’s principle and by Einstein’s theory of classical gravity. A model of Quantum Spacetime is then discussed where the commutation relations exactly implement our uncertainty relations. We

Relaxation Time Of Anisotropic Simple Exclusion Processes And Quantum Heisenberg Models

by Pietro Caputo, Fabio Martinelli , 2002
"... Motivated by an exact mapping between anisotropic half integer spin quantum Heisenberg models and asymmetric diffusions on the lattice, we consider an anisotropic simple exclusion process with N particles in a rectangle of Z . Every particle at row h tries to jump to an arbitrary empty site at row h ..."
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. Carlen, M.C. Carvalho and M. Loss to analyze the Kac model for the non linear Boltzmann equation. We then apply the result to prove precise upper and lower bounds on the energy gap for the spin-S, S 2 N, XXZ chain and for the 111 interface of the spin-S XXZ Heisenberg model, thus generalizing previous
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