Zobrazeno 1 - 10
of 243
pro vyhledávání: '"Jansen, G. R."'
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
Autor:
Chen, S., Browne, F., Doornenbal, P., Lee, J., Obertelli, A., Tsunoda, Y., Otsuka, T., Chazono, Y., Hagen, G., Holt, J. D., Jansen, G. R., Ogata, K., Shimizu, N., Utsuno, Y., Yoshida, K., Achouri, N. L., Baba, H., Calvet, D., Château, F., Chiga, N., Corsi, A., Cortés, M. L., Delbart, A., Gheller, J. -M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, T., Kobayashi, T., Kubota, Y., Lapoux, V., Liu, H. N., Motobayashi, T., Murray, I., Otsu, H., Panin, V., Paul, N., Rodriguez, W., Sakurai, H., Sasano, M., Steppenbeck, D., Stuhl, L., Sun, Y. L., Togano, Y., Uesaka, T., Wimmer, K., Yoneda, K., Aktas, O., Aumann, T., Chung, L. X., Flavigny, F., Franchoo, S., Gasparic, I., Gerst, R. -B., Gibelin, J., Hahn, K. I., Kim, D., Koiwai, T., Kondo, Y., Koseoglou, P., Lehr, C., Linh, B. D., Lokotko, T., MacCormick, M., Moschner, K., Nakamura, T., Park, S. Y., Rossi, D., Sahin, E., Söderström, P. -A., Sohler, D., Takeuchi, S., Törnqvist, H., Vaquero, V., Wagner, V., Wang, S., Werner, V., Xu, X., Yamada, H., Yan, D., Yang, Z., Yasuda, M., Zanetti, L.
Publikováno v:
Phys. Lett. B 843 (2023) 138025
Gamma decays were observed in $^{56}$Ca and $^{58}$Ca following quasi-free one-proton knockout reactions from $^{57,59}$Sc beams at $\approx 200$ MeV/nucleon. For $^{56}$Ca, a $\gamma$ ray transition was measured to be 1456(12) keV, while for $^{58}$
Externí odkaz:
http://arxiv.org/abs/2307.07077
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:
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:
Hagen, G., Novario, S. J., Sun, Z. H., Papenbrock, T., Jansen, G. R., Lietz, J. G., Duguet, T., Tichai, A.
Publikováno v:
Phys. Rev. C 105, 064311 (2022)
Single-reference coupled-cluster theory is an accurate and affordable computational method for the nuclear many-body problem. For open-shell nuclei, the reference state typically breaks rotational invariance and angular momentum must be restored as a
Externí odkaz:
http://arxiv.org/abs/2201.07298
Autor:
Malbrunot-Ettenauer, S., Kaufmann, S., Bacca, S., Barbieri, C., Billowes, J., Bissell, M. L., Blaum, K., Cheal, B., Duguet, T., Ruiz, R. F. Garcia, Gins, W., Gorges, C., Hagen, G., Heylen, H., Holt, J. D., Jansen, G. R., Kanellakopoulos, A., Kortelainen, M., Miyagi, T., Navrátil, P., Nazarewicz, W., Neugart, R., Neyens, G., Nörtershäuser, W., Novario, S. J., Papenbrock, T., Ratajczyk, T., Reinhard, P. -G., Rodríguez, L. V., Sánchez, R., Sailer, S., Schwenk, A., Simonis, J., Somà, V., Stroberg, S. R., Wehner, L., Wraith, C., Xie, L., Xu, Z. Y., Yang, X. F., Yordanov, D. T.
Publikováno v:
Phys. Rev. Lett. 128, 022502 (2021)
Collinear laser spectroscopy is performed on the nickel isotopes $^{58-68,70}$Ni, using a time-resolved photon counting system. From the measured isotope shifts, nuclear charge radii $R_c$ are extracted and compared to theoretical results. Three ab i
Externí odkaz:
http://arxiv.org/abs/2112.03382
Publikováno v:
Phys. Rev. C 104, 064310 (2021)
We construct an effective shell-model interaction for the valence space spanned by single-particle neutron and single-hole proton states in $^{100}$Sn. Starting from chiral nucleon-nucleon and three-nucleon forces and single-reference coupled-cluster
Externí odkaz:
http://arxiv.org/abs/2107.14314
Publikováno v:
Phys. Rev. C 104, 024324 (2021)
Normal-ordering provides an approach to approximate three-body forces as effective two-body operators and it is therefore an important tool in many-body calculations with realistic nuclear interactions. The corresponding neglect of certain three-body
Externí odkaz:
http://arxiv.org/abs/2104.14820
Autor:
Koszorús, Á., Yang, X. F., Jiang, W. G., Novario, S. J., Bai, S. W., Billowes, J., Binnersley, C. L., Bissell, M. L., Cocolios, T. E., Cooper, B. S., de Groote, R. P., Ekström, A., Flanagan, K. T., Forssén, C., Franchoo, S., Ruiz, R. F. Garcia, Gustafsson, F. P., Hagen, G., Jansen, G. R., Kanellakopoulos, A., Kortelainen, M., Nazarewicz, W., Neyens, G., Papenbrock, T., Reinhard, P. -G., Sahoo, B. K., Ricketts, C. M., Vernon, A. R., Wilkins, S. G.
Publikováno v:
Nature Physics 17, 439 (2021)
Nuclear charge radii are sensitive probes of different aspects of the nucleon-nucleon interaction and the bulk properties of nuclear matter; thus, they provide a stringent test and challenge for nuclear theory. The calcium region has been of particul
Externí odkaz:
http://arxiv.org/abs/2012.01864
Autor:
Novario, S. J., Gysbers, P., Engel, J., Hagen, G., Jansen, G. R., Morris, T. D., Navrátil, P., Papenbrock, T., Quaglioni, S.
Publikováno v:
Phys. Rev. Lett. 126, 182502 (2021)
We use coupled-cluster theory and nuclear interactions from chiral effective field theory to compute the nuclear matrix element for the neutrinoless double-beta decay of $^{48}$Ca. Benchmarks with the no-core shell model in several light nuclei infor
Externí odkaz:
http://arxiv.org/abs/2008.09696