The Similarity Renormalization Group - for three bosons in one-dimensional momentum space
Typ
Examensarbete för kandidatexamen
Bachelor Thesis
Bachelor Thesis
Program
Publicerad
2011
Författare
Åkerlund, Oscar
Lindgren, Jonathan
Lerner, Pablo
Linscott, Ross
Grevholm, Björn
Bergsten, Johan
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The Similarity Renormalization Group (SRG) has been studied in a one-dimensional system. It has been implemented for two- and three-body systems in continuous momentum space using Jacobi coordinates. Various potentials have been used, describing different physical attributes such as hard-core repulsion and long-range attraction. The unitarity of the transformation has been verified by examining the conservation of observables, for example of the binding energy. The importance of the induced three-body force has been addressed. We show that the decoupling of high and low energies occurs and that because of this computational requirements are lowered.
Beskrivning
Ämne/nyckelord
Grundläggande vetenskaper , Fysik , Lågenergifysik , Beräkningsfysik , Basic Sciences , Physical Sciences , Low energy physics , Computational physics