Physical Review Letters
Comment on ‘‘Twisted boundary conditions and effective mass in Heisenberg-Ising and Hubbard rings’’
Norio Kawakami, Sung-Kil Yang
Abstract
A Comment on the Letter by Shastry and Sutherland, Phys. Rev. Lett. 65, 243 (1990).Received 25 July 1990DOI:https://doi.org/10.1103/PhysRevLett.65.3063©1990 American Physical Society