Abstract
A new critical-amplitude relation which holds for one-dimensional quantum ground-state transitions is presented. The relation yields an estimate of the sound velocity which appears in the conformal field theory as an a priori unknown parameter. With the use of this relation, the exponent eta can be explicitly determined from only the scaling fit of the off-critical energy gap. The relation is confirmed in the transverse Ising model, the S= 1/2 anisotropic XY model, and the three-state Potts model.
Original language | English |
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Article number | 017 |
Pages (from-to) | 6077-6089 |
Number of pages | 13 |
Journal | Journal of Physics A: General Physics |
Volume | 27 |
Issue number | 18 |
DOIs | |
Publication status | Published - 1994 |
Externally published | Yes |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Physics and Astronomy(all)
- Mathematical Physics