Effective Description of ${ {}}^{5-10}\text {He} $ and the Search for a Narrow ${{}^{4}\text {n}}$ Resonance
| Autor: | K. Fossez, Marek Ploszajczak, Nicolas Michel, Witold Nazarewicz, Jimmy Rotureau |
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| Přispěvatelé: | Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Springer Proc.Phys. 22nd International Conference on Few-Body Problems in Physics 22nd International Conference on Few-Body Problems in Physics, Jul 2018, Caen, France. pp.361-372, ⟨10.1007/978-3-030-32357-8_61⟩ Recent Progress in Few-Body Physics ISBN: 9783030323561 |
| Popis: | International audience; Open quantum systems that are at or beyond the limit of particle-emission stability exhibit generic features stemming from their coupling to an environment of positive energy states and decay channels. In nuclear physics, the exotic helium isotopes ${ {}^{5-10}\text {He} }$ and the four-neutron system ${ {}^{4}\text {n} }$ represent two prototypical cases of open quantum systems whose structures are highly impacted by the environment. In the first part, a practical approach inspired by halo effective field theory for the description of ${ {}^{5-10}\text {He} }$ within tens of keV uncertainties is presented and the parity inversion in ${ {}^{9}\text {He} }$, as well as the possible two-neutron decay of ${ {}^{10}\text {He} }$ are discussed. The second part discusses the last ab initio results on the four-neutron system obtained using chiral forces and including continuum couplings. |
| Databáze: | OpenAIRE |
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