English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Background: The major challenge for nuclear theory is to describe and predictglobal properties and collective modes of atomic nuclei. Of particular interestis the response of the nucleus to a time-dependent external field that impactsthe low-energy multipole and beta-decay strength.  Purpose: We propose a method to compute low-lying collective modes indeformed nuclei within the finite amplitude method (FAM) based on thequasiparticle random-phase approximation (QRPA). By using the analytic propertyof the response function, we find the QRPA amplitudes by computing the residuaof the FAM amplitudes by means of a contour integration around the QRPA polesin a complex frequency plane.  Methods: We use the superfluid nuclear density functional theory with Skyrmeenergy density functionals, FAM-QRPA approach, and the conventional matrixformulation of the QRPA (MQRPA).  Results: We demonstrate that the complex-energy FAM-QRPA method reproduceslow-lying collective states obtained within the conventional matrix formulationof the QRPA theory. Illustrative calculations are performed for the isoscalarmonopole strength in deformed 24Mg and for low-lying K = 0 quadrupolevibrational modes of deformed Yb and Er isotopes.  Conclusions: The proposed FAM-QRPA approach allows one to efficientlycalculate low-lying collective modes in spherical and deformed nucleithroughout the entire nuclear landscape, including shape-vibrationalexcitations, pairing vibrational modes, and beta-decay rates.

Low energy collective modes of deformed superfluid nuclei within the finite amplitude method