2017
DOI: 10.1016/j.nuclphysb.2016.12.024
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Hierarchy of the low-lying excitations for the (2+1)-dimensional q=3 Potts model in the ordered phase

Abstract: The (2 + 1)-dimensional q = 3 Potts model was simulated with the exact diagonalization method. In the ordered phase, the elementary excitations (magnons) are attractive, forming a series of bound states in the low-energy spectrum. We investigate the low-lying spectrum through a dynamical susceptibility, which is readily tractable with the exact diagonalization method via the continuedfraction expansion. As a result, we estimate the series of (scaled) mass gaps, m 2,3,4 /m 1 (m 1 : single-magnon mass), in proxi… Show more

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