The spectrum of massive excitations of 3d 3-state Potts model and universality

Details The spectrum of massive excitations of 3d 3-state Potts model and universality The spectrum of massive excitations of 3d 3-state Potts model and universality

2006-12-14

arxiv.org/abs/hep-lat/0612016v1

Nucl.Phys.B767:385-398,2007

Physics

High Energy Physics

High Energy Physics - Lattice

20 pages, 12 figures; uses axodraw.sty

Scientific paper

10.1016/j.nuclphysb.2007.01.012

We consider the mass spectrum of the 3$d$ 3-state Potts model in the broken phase (a) near the second order Ising critical point in the temperature - magnetic field plane and (b) near the weakly first order transition point at zero magnetic field. In the case (a), we compare the mass spectrum with the prediction from universality of mass ratios in the 3$d$ Ising class; in the case (b), we determine a mass ratio to be compared with the corresponding one in the spectrum of screening masses of the (3+1)$d$ SU(3) pure gauge theory at finite temperature in the deconfined phase near the transition. The agreement in the comparison in the case (a) would represent a non-trivial test of validity of the conjecture of spectrum universality. A positive answer to the comparison in the case (b) would suggest the possibility to extend this conjecture to weakly first order phase transitions.

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