Sökning: "Pernilla Helmer"

Hittade 2 uppsatser innehållade orden Pernilla Helmer.

1. 1. Density Functional Theory for the Hubbard-Holstein model

   Master-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

   Författare :Pernilla Helmer; [2018]
   Nyckelord :density functional theory; hubbard; holstein; bethe lattice; cayley tree; dynamical mean field theory; exchange; correlation; exchange correlation potential; xc-potential; Hxc-potential; Physics and Astronomy;

   Sammanfattning : The physics of interacting many-body systems is a very complex and challenging subject. Therefore one in general needs to use simplified models and approximate methods for studying these systems theoretically. LÄS MER

3. 2. High delity operations in a europium doped inorganic crystal

   Kandidat-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Författare :Pernilla Helmer; [2015]
   Nyckelord :quantum information; Eu; europium; hole burning; quantum memory; qubit; Physics and Astronomy;

   Sammanfattning : The computer has since it was invented become a most crucial tool for scientists in all fields. It has however severe limitations when it comes to e.g. simulating quantum systems, a task quantum computers might be able to perform. LÄS MER