Proceeding di conferenze
|Finite-Size scaling at Yang-Lee singularities of 2D discrete spin models|
|Wydro T., McCabe J.|
|J. Phys.: Conf. Ser. 30 (2006) 98|
|DOI : 10.1088/1742-6596/30/1/013|
We numerically study the Hamiltonian limits of the two dimensional (2D) Ising and 3-state Potts models in complex magneticfields. From the Phenomenological Renormalization Group, we find the criticalfield values associated with the Yang-Lee singularity (YLS) in these models. We also determine the low-lying part of the excitation spectrum at the YLS. Finally, we compare the resulting patterns of energy levels to predictions for conformal non-unitary minimal models.