PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Lattice improvement of nuclear shape calculations using unitary transformations
L. Bovermann*, E. Epelbaum, H. Krebs and D. Lee
Full text: pdf
Pre-published on: May 16, 2022
Published on:
Abstract
We present a method to improve the lattice effective field theory description of the shape of atomic nuclei by applying unitary transformations to the eigenvectors of the Hamiltonian.
The employed unitary operator $U$ is constructed as a reflection transformation from the original and the desired wave functions.
Similarly to a derivative expansion, it can be improved systematically so that one can tune the $\langle r^n \rangle$ expectation values order by order for the two-particle system.
Moreover, the effects of $U$ in the three-particle system have been investigated.
The method might be helpful to reduce lattice artifacts in radii and electromagnetic moments of nuclei.
DOI: https://doi.org/10.22323/1.396.0369
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.