کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
503431 | 863766 | 2012 | 10 صفحه PDF | دانلود رایگان |
Whereas the stability of a pure critical system is determined by the sign of its specific-heat critical exponent α according to Harrisʼ criterion, whether a d -dimensional dirty system should satisfy ν⩾2/dν⩾2/d and α<0α<0 or not has been a controversial issue for several decades, where ν is its correlation-length critical exponent. Here, contrary to recent analytical and numerical results, we find for the three-dimensional three-state random-bond Potts model whose pure version exhibits a first-order phase transition a random fixed point whose ν<2/dν<2/d and α>0α>0 using a finite-time scaling combining with extended dynamic Monte Carlo renormalization-group method. This suggests further studies are still needed to clarify the issue in three-dimensional systems.
Journal: Computer Physics Communications - Volume 183, Issue 6, June 2012, Pages 1162–1171