QRPA method within the mean-field+Lanczos approach
7
Jacek Dobaczewski QRPA method within the mean-field+Lanczos approach The FIDIPRO team University of Jyväskylä FIDIPRO-UNEDF collaboration meeting on nuclear energy-density-functional methods Jyväskylä, October 9-10, 2008
description
QRPA method within the mean-field+Lanczos approach. The FIDIPRO team University of Jyväskylä. FIDIPRO-UNEDF collaboration meeting on nuclear energy-density-functional methods Jyväskylä, October 9-10, 2008. Motivation & Background. - PowerPoint PPT Presentation
Transcript of QRPA method within the mean-field+Lanczos approach
Jacek Dobaczewski
QRPA method within themean-field+Lanczos approach
The FIDIPRO teamUniversity of Jyväskylä
FIDIPRO-UNEDF collaboration meeting onnuclear energy-density-functional methods
Jyväskylä, October 9-10, 2008
Jacek Dobaczewski
Motivation & Background1. Standard RPA and QRP calculations in deformed
nuclei are very difficult because of exploding size of two-(quasi)particle space:• matrices of size N2N2 must be diagonalized,
for the single-particle space of N~100 (axial symmetry) or N~1000 (triaxial symmetry) .
• calculation of the two-body matrix elements is the bottleneck.
2. RPA and QRPA methods are based on the time-dependent EDF (DFT), which is believed to be well founded for calculation of excited states.
3. No extension to beyond-mean field is necessary.4. The same functional defines RPA-QRPA and
ground states.5. Beta decay rates known in many (deformed)
nuclei:• invaluable source of data for adjusting
functionals• in strong demand from experimentalists• crucial for extrapolations and astrophysics
Jacek Dobaczewski
RPA method
Jacek Dobaczewski
New approach
Jacek Dobaczewski
Discussion points
Jacek Dobaczewski
Discussion points
Jacek Dobaczewski
Stay tuned
