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cond-mat.stat-mech2007★ 26 cited
Density matrix elements and entanglement entropy for the spin-1/2 XXZ chain at =1/2
Jun Sato, Masahiro Shiroishi
We have analytically obtained all the density matrix elements up to six lattice sites for the spin-1/2 Heisenberg XXZ chain at . We use the multiple integral formula of the…
cond-mat.stat-mech2006★ 15 cited
String correlation functions of the spin-1/2 Heisenberg XXZ chain
Michael Bortz, Jun Sato, Masahiro Shiroishi
We calculate certain string correlation functions, originally introduced as order parameters in integer spin chains, for the spin-1/2 XXZ Heisenberg chain at zero temperature and i…