Search for dissertations about: "kondo lattice"

Found 3 swedish dissertations containing the words kondo lattice.

2. 1. The one-dimensional Kondo Lattice in the Majorana Fermion representation

   Author : Matteo Bazzanella; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Majorana fermions; kondo lattice; path integral; spin-selective kondo insulator;

   Abstract : This thesis analyses the possibilities offered by the representation of quantum mechanical operators in terms of Majorana fermions. These objects can be imagined as algebraic constituents of the fermionic degrees of freedom, allowing for a different representation of many Hamiltonians. READ MORE

4. 2. Density-Matrix Renormalization-Group Analysis of Kondo and XY models

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

   Abstract : .... READ MORE

5. 3. Non-Linear Canonical Methods in Strongly Correlated Electron Systems

   Author : Matteo Bazzanella; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Majorana fermions; Emergent Majorana fermions; Non-linear transformation; canonical transformation; Kondo lattice; Mott insulator; Mean-field; Path-integral;

   Abstract : In this thesis some new ideas to perform the analysis of Strongly Correlated Electronic Systems (SCES) are developed. In particular the use of non-linear canonical transformations is considered thoroughly. READ MORE