Uncertainties on the EFT coupling limits for direct dark matter detection experiments stemming from uncertainties of target properties
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Engineering topics
Johnson, Calvin W. (ORCID:0000000310597384)
Publications and source records attributed to Johnson, Calvin W. (ORCID:0000000310597384).
Proton-neutron entanglement in the nuclear shell model
Abstract 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 energies, strongly affects the energetically available space and thus the entanglement entropy. We also find a surprising result: that the entanglement entropy at low excitation energy tends to decrease for nuclides when N ≠ Z . While we provide evidence this arises from the physical nuclear force by contrasting with random two-body interactions which shows no such decrease, the exact mechanism is unclear. Nonetheless, the low entanglement suggests that in models of neutron-rich nuclides, the coupling between protons and neutrons may be less computationally demanding than one might otherwise expect.
73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
Collective neutrino oscillations with tensor networks using a time-dependent variational principle
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
From deformed Hartree-Fock to the nucleon-pair approximation
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79 ASTRONOMY AND ASTROPHYSICS↗