Excited state of the particle: A benchmark study
P.-Y. Duerinck, A. Deltuva, J. Dohet-Eraly, M. Gattobigio, A. Kievsky, R. Lazauskas, D. Likandrovas, and M. Viviani
Phys. Rev. C 112, 044001 (2025) - Published 1 October, 2025
The He nucleus, for historical reasons often called the particle, has a large binding energy but it lacks stable excited states. Experimental data suggest a resonance about 0.4 MeV above the -H threshold with a width comparable to that energy. The authors carry out a benchmark calculation which locates a shallow bound excited state in He near that threshold when they switch off the Coulomb interaction. As they gradually re-introduce it, the excited state crosses the threshold and eventually becomes a resonant state. Comparisons of resonant energy and width show significant discrepancies with -matrix analyses from experimental data. However, using universal concepts, the authors conclude that the existence of this state is not a consequence of a particular interaction between the constituent protons and neutrons but is due to a discrete scale invariance that constrains the spectrum of the -body system, thus demonstrating a connection to the universal behavior of systems with four nucleons.
Searching for entanglement in final polarization states of neutron-proton scattering
H. Witała, J. Golak, and R. Skibiński
Phys. Rev. C 112, 044002 (2025) - Published 14 October, 2025
Probing interaction through bound states of the system
Faisal Etminan
Phys. Rev. C 112, 044003 (2025) - Published 17 October, 2025
Quantum complexity fluctuations from nuclear and hypernuclear forces
Caroline E. P. Robin and Martin J. Savage
Phys. Rev. C 112, 044004 (2025) - Published 17 October, 2025
-deuteron momentum correlation functions incorporating deuteron breakup contributions in Faddeev formulation
M. Kohno and H. Kamada
Phys. Rev. C 112, 044005 (2025) - Published 21 October, 2025
3- and 4- systems within a short-range effective field theory–inspired approach
E. Filandri, M. Viviani, L. Girlanda, A. Kievsky, and L. E. Marcucci
Phys. Rev. C 112, 044006 (2025) - Published 27 October, 2025
Kadanoff-Baym approach to bound states in open quantum systems
Tim Neidig, Marcus Bleicher, Hendrik van Hees, and Carsten Greiner
Phys. Rev. C 112, 044007 (2025) - Published 28 October, 2025


