2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/102692This paper studies the Yang-Lee edge singularity of 2-dimensional 2D Ising model through a quantum spin chain. In particular, finite-size scaling measurements on the quantum spin chain are used to determine the low-lying excitation spectrum and central charge at the Yang-Lee edge singularity. The measured values are consistent with predictions for the (A4, A1) minimal conformal field theory.10 pages, 5 figuresStatistical Mechanicstext