Open AccessA NEW METHOD TO SOLVE THE S = l/2 HEISENBERG SPIN CHAIN
Author(s) -
林念,
于祖荣
Publication year - 1993
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.42.1990
Subject(s) - eigenvalues and eigenvectors , antiferromagnetism , physics , chain (unit) , ground state , excited state , spin (aerodynamics) , permutation group , heisenberg model , boundary (topology) , mathematical physics , quantum mechanics , permutation (music) , mathematical analysis , mathematics , acoustics , thermodynamics
We present a new approach which is completely based on the permutation group theory to solve the eigenvalue problem of the S = 1/2 Heisenberg finite-chain with free-ends boundary. All of the eigenvalues and the corresponding eigenstates are obtained. The properties of the ground state and the low-lying excited states of the antiferromagnetic chain are examined.