Interfaces in the Ising quantum chain and conformal invariance
Degang Zhang, Bo‐Zang Li, Min‐Guang Zhao
The Ising quantum chain with multiple interfaces is solved exactly. The model is shown to be conformally invariant only for a commensurate configuration of the critical parameters. The spectra are generated by an irreducible oscillator representation of the shifted SO(2c) Kac-Moody algebra, where the central charge c is a discontinuous function of the critical parameters. The critical exponents associated with these interfaces are determined. \textcopyright{} 1996 The American Physical Society.
Physical review. B, Condensed matter•Apr 1, 1996•7 citations