Sökning: "Wolff algorithm"

Hittade 2 uppsatser innehållade orden Wolff algorithm.

1. 1. Effects of power-law correlated disorder on a 3D XY model

   Master-uppsats, KTH/Fysik

   Författare :Philip Broms; [2022]
   Nyckelord :Condensed matter physics; Ising model; XY model; Markov Chain Monte Carlo; Phase transition; Disorder; Theoretical physics; Wolff algorithm; Kondenserade materians teori; Isingmodell; XY-modell; Markovkedje-Monte Carlo-metoder; Teoretisk fysik; Oordning; Fasövergångar; Wolffalgoritmen;

   Sammanfattning : This thesis investigates the effects of power-law correlated disorder on a three-dimensional XY model and the Weinrib-Halperin disorder relevance criterion’s pre-dictive ability. Ising models are used as a map to realise disorder couplings. LÄS MER

3. 2. Properties of cluster-size heterogeneity near the phase transition in the two-dimensional Ising model

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Renée Kauppi; [2020]
   Nyckelord :Ising model; Cluster-size heterogeneity; Phase transition;

   Sammanfattning : Two different definitions of cluster-size heterogeneity are investigated as well as correlation time of different quantities using the Metropolis algorithm and the Wolff algorithm. It is confirmed that the correlation time multiplied by the computation time is lower for the Wolff algorithm in an area around the critical temperature. LÄS MER