Announcement of Seminars
Upcoming Seminars
June 30, 2026 (Tue)
| Speaker | Prof. Giampaolo Co' (Università del Salento) |
| Title | Correlations in nuclei |
| Time | 17:00–18:30 (JST) |
| Venue | Online only |
| Zoom Broadcast | Please contact the organzier |
| Language | English |
| Note | None |
In this talk, I discuss the role of correlations in the description of nuclear systems. I first provide a precise definition of what is meant by correlation and then distinguish between short-range and long-range correlations. The former are associated with the nucleon–nucleon interaction, while the latter arise from collective excitations of the nucleus.
I briefly introduce two theoretical frameworks: the Fermi Hypernetted Chain (FHNC) theory for the treatment of short-range correlations and the Random Phase Approximation (RPA) for the description of collective nuclear excitations. I then propose a simplified model that combines these two approaches and present the results obtained for the description of the density distributions of calcium isotopes.
Past Seminars
April 15, 2026 (Wed)
| Speaker | Prof. Xavier Roca-Maza (Departament de Física Quàntica i Astrofísica, Universitat de Barcelona) |
| Title | The neutron skin thickness in atomic nuclei |
| Time | 10:30–12:00 (JST) |
| Venue | Meeting Room 1 (First Floor), Engineering Building No.8, Hongo Campus, The University of Tokyo |
| Zoom Broadcast | None |
| Language | English |
| Note | None |
In this talk I will discuss different theoretical analysis of some selected experimental data on low-energy nuclear observables—such as the dipole polarizability [1–3], the parity violating asymmetry [2–5] or the excitation energy of the Isobaric Analog State [6]—that give access to the neutron skin thickness in medium and heavy nuclei. These measurements are complementary to the recent extraction of the neutron skin thickness using high-energy heavy ion collisions [7].
[1] X. Roca-Maza, X. Viñas, M. Centelles, B. K. Agrawal, G. Colò, N. Paar, J. Piekarewicz, and D. Vretenar. Phys. Rev. C 92, 064304 (2015).
[2] P.-G. Reinhard, X. Roca-Maza, W. Nazarewicz. Phys. Rev. Lett. 127, 232501 (2021).
[3] P.-G. Reinhard, X. Roca-Maza, W. Nazarewicz. Phys. Rev. Lett. 129, 232501 (2022).
[4] X. Roca-Maza, M. Centelles, X. Viñas, and M. Warda. Phys. Rev. Lett. 106, 252501 (2011).
[5] X. Roca-Maza and D. H. Jakubassa-Amundsen. Phys. Rev. Lett. 134, 192501 (2025).
[6] X. Roca-Maza, G. Colò, and H. Sagawa. Phys. Rev. Lett. 120, 202501 (2018).
[7] G. Giacalone, G. Nijs, and W. van der Schee. Phys. Rev. Lett. 131, 202302 (2023).
February 12, 2026 (Thu)
| Speaker | Mr. Ryotaro Masuda (Department of Physics, Graduate School of Science, The University of Osaka) |
| Title | Photon measurements in rare gas solid samples and quantum chemical calculations on the electronic state dependence of the decay mechanism of \( {}^{229m} \mathrm{Th} \) |
| Time | 14:00–15:30 (JST) |
| Venue | #502, Engineering Building No.8, Hongo Campus, The University of Tokyo |
| Zoom Broadcast | None |
| Language | Japanese |
| Note | None |
February 06, 2026 (Fri)
| Speaker | Prof. Haozhao Liang (Department of Physics, Graduate School of Science, The University of Tokyo) |
| Dr. Hiroyuki Tajima (Department of Physics, Graduate School of Science, The University of Tokyo) | |
| Prof. Takeshi Sato (Department of Nuclear Engineering and Management, Graduate School of Engineering, The University of Tokyo) | |
| Title | Nuclear Theory Meeting, The University of Tokyo |
| Time | 14:00–17:00 (JST) |
| Venue | #502, Engineering Building No.8, Hongo Campus, The University of Tokyo |
| Zoom Broadcast | None |
| Language | English |
| Note | This is an internal meeting. |