Essays about: "bose-hubbard model"

Found 3 essays containing the words bose-hubbard model.

1. 1. Investigation of a newrepresentation of spin

   University essay from Uppsala universitet/Materialteori

   Author : Minna Palmgren Thun; [2023]
   Keywords : Material theory; Spin; Statistical physics; Second quantization; Materialteori; spinn;

   Abstract : The Bose-Hubbard Model, a tight binding model within solid state theory can be solved exactly using a number theoretical approach. From this approach, in the two sited Bose-Hubbard model, the hopping term in the model takes the form of a Pauli x matrix. The hopping term can be interpreted as a two energy level system or a dimer with k+1 particles. READ MORE

3. 2. Quantum Compactons in an extended Bose-Hubbard model

   University essay from Institutionen för fysik, kemi och biologi

   Author : Peter Jason; [2011]
   Keywords : Bose-Hubbard model; extended Bose-Hubbard model; compactons; quantum compactons;

   Abstract : The Bose-Hubbard model is used to study bosons in optical lattices. In this thesis we will use an extended Bose-Hubbard model to study a type of completely localized solutions, called compactons. The compactons are a special case of the much studied solitons. The soliton is a familiar concept in non-linear physics. READ MORE

4. 3. Comparison of classical and quantum properties in an extended Bose-Hubbard model

   University essay from Teoretisk Fysik

   Author : Albaro Vega Gutierrez de Pineres; [2011]
   Keywords : bose-hubbard model; extended bose-hubbard model;

   Abstract : In order to explore a quantum version of a discrete nonlinear Schrödinger equation (DNLS), we quantize one nonlinear Schrödinger model, which is used to study different physical systems, e.g. coupled Bose-Einstein condensates. We will focus on small systems, like Dimer and Trimer. READ MORE