Zobrazeno 1 - 10
of 207
pro vyhledávání: '"Johnson, Calvin W."'
Autor:
Gorton, Oliver C., Johnson, Calvin W.
The interacting shell model, a configuration-interaction method, is a venerable approach to low-lying nuclear structure; but it is hampered by the exponential growth of the basis dimension as one increases the single-particle space and/or the number
Externí odkaz:
http://arxiv.org/abs/2406.10120
By varying a general pair condensate (VPC), we explore the multiplet of minima in even-even nuclei from $sd$ shell to media-heavy $sdg7h11$ shell, which may provide the foundation of universal coexistence. The VPC calculation is limited within a sing
Externí odkaz:
http://arxiv.org/abs/2402.11276
Autor:
Heimsoth, Daniel J., Lem, Brandon, Suliga, Anna M., Johnson, Calvin W., Balantekin, A. Baha, Coppersmith, Susan N.
Publikováno v:
Phys. Rev. D 108, 103031 (2023)
Direct detection experiments are still one of the most promising ways to unravel the nature of dark matter. To fully understand how well these experiments constrain the dark matter interactions with the Standard Model particles, all the uncertainties
Externí odkaz:
http://arxiv.org/abs/2305.08991
Autor:
Zbikowski, Ryan M., Johnson, Calvin W.
The Lanczos algorithm has proven itself to be a valuable matrix eigensolver for problems with large dimensions, up to hundreds of millions or even tens of billions. The computational cost of using any Lanczos algorithm is dominated by the number of s
Externí odkaz:
http://arxiv.org/abs/2210.15763
Autor:
Johnson, Calvin W., Gorton, Oliver C.
Publikováno v:
J. Phys. G: Nucl. Part. Phys. 50 045110 (2023)
We compute the proton-neutron entanglement entropy in the interacting nuclear shell model for a variety of nuclides and interactions. Some results make intuitive sense, for example that the shell structure, as governed by single-particle and monopole
Externí odkaz:
http://arxiv.org/abs/2210.14338
There is increasing interest in quantum algorithms that are based on the imaginary-time evolution (ITE), a successful classical numerical approach to obtain ground states. However, most of the proposals so far require heavy post-processing computatio
Externí odkaz:
http://arxiv.org/abs/2208.10535
Background: Computationally tractable models of atomic nuclei is a long-time goal of nuclear structure physics. A flexible framework which easily includes excited states and many-body correlations is the configuration-interaction shell model (SM), bu
Externí odkaz:
http://arxiv.org/abs/2208.02079
While empirical shell model calculations have successfully described low-lying nuclear data for decades, only recently has significant effort been made to quantify the uncertainty in such calculations. Here we quantify the statistical error in effect
Externí odkaz:
http://arxiv.org/abs/2206.14956
Autor:
Heller, Nicholas D., Sargsyan, Grigor H., Launey, Kristina D., Johnson, Calvin W., Dytrych, Tomáš, Draayer, Jerry P.
We provide new insights into backbending phenomenon within the symmetry-adapted framework which naturally describes the intrinsic deformation of atomic nuclei. For $^{20}\text{Ne}$, the canonical example of backbending in light nuclei, the ab initio
Externí odkaz:
http://arxiv.org/abs/2205.06943
Autor:
Cervia, Michael J., Siwach, Pooja, Patwardhan, Amol V., Balantekin, A. B., Coppersmith, S. N., Johnson, Calvin W.
Publikováno v:
Phys. Rev. D 105, 123025 (2022)
If a system of flavor-oscillating neutrinos is at high enough densities that neutrino-neutrino coherent forward scatterings are non-negligible, the system becomes a time-dependent many-body problem. An important and open question is whether the flavo
Externí odkaz:
http://arxiv.org/abs/2202.01865