Zobrazeno 1 - 10
of 673
pro vyhledávání: '"Papenbrock, T"'
The island of inversion is a region of neutron-rich nuclei that are deformed in their ground states. In this region, less is known about the energy levels of odd-mass nuclei, how they evolve with increasing neutron numbers, and how they can be organi
Externí odkaz:
http://arxiv.org/abs/2409.02279
We present coupled-cluster computations of nuclei with neutron number $N=50$ "south" of $^{78}$Ni using nucleon-nucleon and three-nucleon forces from chiral effective field theory. We find an erosion of the magic number $N=50$ toward $^{70}$Ca manife
Externí odkaz:
http://arxiv.org/abs/2408.07856
Publikováno v:
Phys. Rev. C.110, L011302 (2024)
Nuclei around $N\approx Z\approx 40$ are strongly deformed and exhibit coexistence of shapes. These phenomena have challenged nuclear models. Here we perform ab initio coupled-cluster computations of low-lying collective states and electromagnetic qu
Externí odkaz:
http://arxiv.org/abs/2405.05052
Atomic nuclei exhibit multiple energy scales ranging from hundreds of MeV in binding energies to fractions of an MeV for low-lying collective excitations. As the limits of nuclear binding is approached near the neutron- and proton driplines, traditio
Externí odkaz:
http://arxiv.org/abs/2404.00058
Publikováno v:
Phys. Rev. Lett. 132, 232504 (2024)
The magnetic dipole transition strength $B(M1)$ of $^{48}$Ca is dominated by a single resonant state at an excitation energy of 10.23 MeV. Experiments disagree about $B(M1)$ and this impacts our understanding of spin flips in nuclei. We performed ab
Externí odkaz:
http://arxiv.org/abs/2311.11438
Publikováno v:
Phys. Rev C. 108, 014307 (2023)
Atomic nuclei can exhibit shape coexistence and multi-reference physics that enters in their ground states, and to accurately capture the ensuing correlations and entanglement is challenging. We address this problem by applying single-reference coupl
Externí odkaz:
http://arxiv.org/abs/2305.07577
We compute the structure of the exotic even nuclei $^{20-34}$Ne and $^{34-40}$Mg using interactions from chiral effective field theory (EFT). Our results for the ground-state rotational bands in $^{20-32}$Ne and $^{36-40}$Mg agree with data. We predi
Externí odkaz:
http://arxiv.org/abs/2305.06955
Publikováno v:
Phys. Rev. C 108, 054309 (2023)
We study entanglement entropies between the single-particle states of the hole space and its complement in nuclear systems. Analytical results based on the coupled-cluster method show that entanglement entropies are proportional to the particle numbe
Externí odkaz:
http://arxiv.org/abs/2303.04799
Publikováno v:
Front. Phys. 11:1129094 (2023)
Ab initio has been used as a label in nuclear theory for over two decades. Its meaning has evolved and broadened over the years. We present our interpretation, briefly review its historical use, and discuss its present-day relation to theoretical unc
Externí odkaz:
http://arxiv.org/abs/2212.11064
Autor:
Cirigliano, V., Davoudi, Z., Engel, J., Furnstahl, R. J., Hagen, G., Heinz, U., Hergert, H., Horoi, M., Johnson, C. W., Lovato, A., Mereghetti, E., Nazarewicz, W., Nicholson, A., Papenbrock, T., Pastore, S., Plumlee, M., Phillips, D. R., Shanahan, P. E., Stroberg, S. R., Viens, F., Walker-Loud, A., Wendt, K. A., Wild, S. M.
Publikováno v:
J. Phys. G: Nucl. Part. Phys. 49, 120502 (2022)
We present the results of a National Science Foundation (NSF) Project Scoping Workshop, the purpose of which was to assess the current status of calculations for the nuclear matrix elements governing neutrinoless double-beta decay and determine if mo
Externí odkaz:
http://arxiv.org/abs/2207.01085