Essays about: "xy theory"

Found 4 essays containing the words xy theory.

  1. 1. Numerical Estimation of Critical Exponents in the 3D XY Model

    University essay from KTH/Fysik

    Author : Christoffer Beiming; [2023]
    Keywords : Theoretical physics; Condensed matter theory; Phase transitions; XY model; Critical exponents; Computational physics; Monte Carlo simulations; Teoretisk fysik; Kondenserade materiens teori; Fasövergångar; XY-modellen; Kritiska exponenter; Beräkningsfysik; Monte Carlo simulering;

    Abstract : The experimentally obtained value of the critical exponent ν is presently in significant disagreement with current theoretical predictions for the λ-universality class. We suggest two novel approaches of determining the exponents ν and η by utilizing the effects of finite size scaling. READ MORE

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

    University essay from KTH/Fysik

    Author : Philip Broms; [2022]
    Keywords : 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;

    Abstract : 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. READ MORE

  4. 3. A target-capturing problem based on a cyclic  pursuit strategy.

    University essay from KTH/Optimeringslära och systemteori

    Author : Jenni Svensson; Robert Vegh; [2011]
    Keywords : ;

    Abstract : A consensus problem is best described as a situation where multiple agents need to come to an agreement based on information gathered by all agents. However, each agent only has information from a few other agents. Applications for this could, for instance, be any kind of situation where you have autonomous agents that need to cooperate. READ MORE

  5. 4. Robust and Adaptive Sliding Mode Controller for Machine Tool with Varying Inertia

    University essay from KTH/Reglerteknik

    Author : Ola Bratt; [2006]
    Keywords : ;

    Abstract : This thesis considers the problem of designing a robust controller that achieves highperformance positioning and reference tracking of a machine tool. Specifically, the machine tool is a XY-table used in high-accuracy/high speed milling applications. READ MORE