Sökning: "lattice models"

Visar resultat 16 - 20 av 139 avhandlingar innehållade orden lattice models.

  1. 16. Density-Matrix Renormalization-Group Analysis of Kondo and XY models

    Författare :Ausrius Juozapavicius; KTH; []
    Nyckelord :Quantum spin chain; DMRG; XY model; Ising model; Kondo lattice model; magnetization;

    Sammanfattning : .... LÄS MER

  3. 17. Models for coupled active-passive population dynamics : Mathematical analysis and simulation

    Författare :Thi Kim Thoa Thieu; Adrian Muntean; Matteo Colangeli; Grigorios A. Pavliotis; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pedestrian dynamics; simple exclusion process; Forchheimer flows; Skorohod equations; nonlinear coupling; heterogenous domain; homogenization; drafting; evacuation; Matematik; Mathematics;

    Sammanfattning : In this dissertation, we study models for coupled active--passive pedestrian dynamics from mathematical analysis and simulation perspectives. The general aim is to contribute to a better understanding of complex pedestrian flows. LÄS MER

  4. 18. PROTEIN FOLD SWITCHING IN COARSE-GRAINED MODELS

    Författare :Christian Holzgräfe; Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2014:Holzgräfe; coarse-grained model; protein folding; evolution; fold switching;

    Sammanfattning : Proteins carry out the instructions encoded in genes and are crucial for many important tasks in the living organism. Often the specific three dimensional structure, or fold, of a protein enables it to carry out a given task. LÄS MER

  5. 19. Minimal models in algebra, combinatorics and topology

    Författare :Alexander Berglund; Torsten Ekedahl; Alexandru Suciu; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK; matematik; Mathematics;

    Sammanfattning : The thesis consists of seven papers.In Paper I, II, III, IV and V, we study homological invariants of monomial rings — rings of the form R = k[x1, . . . LÄS MER

  7. 20. Classical and Quantum Descriptions of Proteins, Lipids and Membranes

    Författare :Richard Tjörnhammar; Olle Edholm; Sagar Pandit; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum corrections; Coordination structure; Polarisation; Phase transitions; Kelvin differential equation; Line tension; Elastic membrane models; Molecular particle models; Zinc binding; Cholesterol and Phospholipids; Biological Physics; Biologisk fysik;

    Sammanfattning : In this thesis the properties of proteins and membranes are studied by molecular dynamics simulations. The subject is decomposed into parts addressing free energy calculations in proteins, mechanical inclusion models for lipid bilayers, phase transitions and structural correlations in lipid bilayers and atomistic lipid bilayer models. LÄS MER