Conformal invariance and the spectrum of the XXZ chain.
作者： Francisco C. Alcaraz , Michael N. Barber , Murray T. Batchelor
DOI: 10.1103/PHYSREVLETT.58.771
关键词: Potts model 、 Periodic boundary conditions 、 Scaling 、 Physics 、 Boundary value problem 、 Ansatz 、 Hamiltonian (quantum mechanics) 、 Conformal symmetry 、 Quantum electrodynamics 、 Eigenvalues and eigenvectors 、 Mathematical physics
摘要: Numerical solutions of the Belhe- Ansatz equations for eigenenergies XXZ Hamiltonian on very large chains are used to identify, via conformal invariance, scaling dimensions various two-dimensional models. With periodic boundary conditions, eight-vertex and Gaussian model operators found. The Ashkin-Teller Potts models obtained by exact relating eigenstates their quantum Hamiltonians those chain with modified conditions. irrelevant governing dominant finite-size corrections also identified. PACS numbers: 64.60.–i, 05.50.+q, 75.10.Hk, 75.10.Jm
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