Zobrazeno 1 - 10
of 157
pro vyhledávání: '"Hammer, Hans-Werner"'
Autor:
Caputo, Andrea, Gazit, Doron, Hammer, Hans-Werner, Kopp, Joachim, Paz, Gil, Perez, Gilad, Springmann, Konstantin
The recent demonstration of laser excitation of the $\approx 8$ eV isomeric state of thorium-229 is a significant step towards a nuclear clock. The low excitation energy likely results from a cancellation between the contributions of the electromagne
Externí odkaz:
http://arxiv.org/abs/2407.17526
Autor:
Bubna, Rishabh, Hammer, Hans-Werner, Müller, Fabian, Pang, Jin-Yi, Rusetsky, Akaki, Wu, Jia-Jun
We derive the modified L\"uscher equation in the presence of the long-range force caused by the exchange of a light particle. It is shown that the use of this equation enables one to circumvent the problems related to the strong partial-wave mixing a
Externí odkaz:
http://arxiv.org/abs/2402.12985
We investigate the spin entanglement in few-nucleon scattering processes involving nucleons and deuterons. For this purpose, we consider the entanglement power introduced by Beane et al. We analyze different entanglement entropies as a basis to defin
Externí odkaz:
http://arxiv.org/abs/2312.14484
Publikováno v:
Sci. Bull. 69 (2024) 419-421
We comment on the puzzling status of the proton magnetic radius determinations.
Comment: 3 pages, 1 figure, accepted for publication in Science Bulletin, News and Views section, irrelevant formula removed
Comment: 3 pages, 1 figure, accepted for publication in Science Bulletin, News and Views section, irrelevant formula removed
Externí odkaz:
http://arxiv.org/abs/2312.08694
We analyze the contribution of pionic final state interactions (FSI) in the weak decay of the hypertriton. Focusing on the $^3$He channel, we find a contribution of the pionic FSI of the order of $18\%$. Assuming a fixed value for the branching ratio
Externí odkaz:
http://arxiv.org/abs/2309.12822
We calculate neutron-neutron relative-energy distributions of $s$-wave two-neutron ($2n$) halo nuclei using Halo Effective Field Theory (Halo EFT) at leading order. At this order these systems are described by the $2n$ separation energy, the neutron-
Externí odkaz:
http://arxiv.org/abs/2309.03902
Neutron scattering off neutron halos can provide important information about the internal structure of nuclei close to the neutron drip line. In this work, we use halo effective field theory to study the $s$-wave scattering of a neutron and the spin-
Externí odkaz:
http://arxiv.org/abs/2308.12815
Publikováno v:
Commun. Phys. 6 224 (2023)
The model of a ring threaded by the Aharonov-Bohm flux underlies our understanding of a coupling between gauge potentials and matter. The typical formulation of the model is based upon a single particle picture, and should be extended when interactio
Externí odkaz:
http://arxiv.org/abs/2301.10488
Autor:
Braaten, Eric, Hammer, Hans-Werner
A nonrelativistic unparticle can be defined as an excitation created by an operator with a definite scaling dimension in a nonrelativistic field theory with an approximate conformal symmetry. The point production rate of an unparticle has power-law d
Externí odkaz:
http://arxiv.org/abs/2301.04399
We investigate the weak decay of one-neutron halo nuclei into the proton-core continuum, i.e., beta-delayed proton emission from the halo nucleus using a cluster effective field theory for halo nuclei. On the one hand, we calculate the direct decay i
Externí odkaz:
http://arxiv.org/abs/2212.05087