LETTER TO THE EDITOR

FIRST-ORDER PHASE TRANSITION IN 1d POTTS MODEL WITH LONG-RANGE INTERACTIONS

KATARINA UZELAC and ZVONKO GLUMAC

Institute of Physics, Bijenička 46, P.O.Box 304, HR-10000 Zagreb, Croatia

Received 28 August 1997

The first-order phase transition in the one-dimensional q-state Potts model with long-range interactions decaying with distance as 1/r^1+s, has been studied by Monte Carlo numerical simulations for 0 < s Ł 1 and integer values of q > 2. On the basis of the finite-size scaling analysis of interface free energy DF_L, specific heat and Binder's fourth order cumulant, we obtain the first-order transition which occurs for s below a threshold value s_c(q).

UDC 536.763
PACS numbers 05.50.+q, 64.60.Cn

Copyright by The Croatian Physical Society
For problems or questions please contact fizika@fizika.hfd.hr