Finite-size corrections of an integrable chain with alternating spins
Abstract
Description
In this paper we calculate the finite-size corrections of an anisotropic integrable spin chain, consisting of spins s=1 and s=1/2. The calculations are done in two regions of the phase diagram with respect to the two couplings $\bar{c}$ and $\tilde{c}$. In case of conformal invariance we obtain the final answer for the ground state and its lowest excitations, which generalizes earlier results.
11 pages, LaTeX, uses ioplppt.sty,replaced with published version
11 pages, LaTeX, uses ioplppt.sty,replaced with published version