Correlation functions of the XXZ model for Delta < -1

Jun 8, 1992
10 pages
Published in:
  • Phys.Lett.A 168 (1992) 256-263
e-Print:
Report number:
  • PRINT-92-0191 (KYOTO),
  • RIMS-877

Citations per year

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Abstract:
(A new approach to the correlation functions is presented for the XXZ model in the anti-ferroelectric regime. The method is based on the recent realization of the quantum affine symmetry using vertex operators. With the aid of a boson representation for the latter, an integral formula is found for correlation functions of arbitrary local operators. As a special case it reproduces the spontaneous staggered polarization obtained earlier by Baxter.)
Note:
  • Dedicated to Chen Ning Yang on occasion of his 70th birthday
  • 10 pages