Unitary Correlation Operator Method and Similarity Renormalization Group: Connections and Differences

Physics – Nuclear Physics – Nuclear Theory

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

13 pages, 11 figures; v2: minor changes following referees' comments

Scientific paper

10.1103/PhysRevC.77.064003

We discuss relations and differences between two methods for the construction of unitarily transformed effective interactions, the Similarity Renormalization Group (SRG) and Unitary Correlation Operator Method (UCOM). The aim of both methods is to construct a soft phase-shift equivalent effective interaction which is well suited for many-body calculations in limited model spaces. After contrasting the two conceptual frameworks, we establish a formal connection between the initial SRG-generator and the static generators of the UCOM transformation. Furthermore we propose a mapping procedure to extract UCOM correlation functions from the SRG evolution. We compare the effective interactions resulting from the UCOM-transformation and the SRG-evolution on the level of matrix elements, in no-core shell model calculations of light nuclei, and in Hartree-Fock calculations up to 208-Pb. Both interactions exhibit very similar convergence properties in light nuclei but show a different systematic behavior as function of particle number.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Unitary Correlation Operator Method and Similarity Renormalization Group: Connections and Differences does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Unitary Correlation Operator Method and Similarity Renormalization Group: Connections and Differences, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unitary Correlation Operator Method and Similarity Renormalization Group: Connections and Differences will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-472123

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.