Article
Physics, Nuclear
Herlik Wibowo, Elena Litvinova
Summary: The study investigates the shell evolution of neutron-rich nuclei with temperature, focusing on the fragmentation pattern of single-particle states and its sensitivity to phonon frequencies, PVC strength, and mean-field level density. Insights are provided into the temperature evolution of the PVC mechanism in real nuclear systems under conditions occurring in astrophysical environments.
Article
Physics, Nuclear
W. Zhang, Z. Y. Li, W. Gao, T. T. Sun
Summary: A relativistic Weizsacker mass model is proposed based on single-particle levels and ground state deformations obtained from axial deformed relativistic mean field theory. The chosen density functional, DD-LZ1, can partially remove spurious shell closures. The proposed model exhibits wide spreading shell correction energies compared to the fourth Weizsacker-Skyrme mass model, with a root-mean-square mass deviation of 1.353 MeV. Further improvement is underway.
Article
Astronomy & Astrophysics
J. Bonnard, J. Dobaczewski, G. Danneaux, M. Kortelainen
Summary: Within the nuclear DFT approach, the magnetic dipole and electric quadrupole moments for paired nuclear states were determined. Calculations were performed for all deformed open-shell odd nuclei and good agreement with experimental data was obtained. It was shown that the intrinsic magnetic dipole moments do not represent viable approximations of the spectroscopic ones.
Article
Physics, Nuclear
Wei-Qiang Ma, Yi-Bin Qian
Summary: The study investigates the isospin dependence of spin-orbit splitting in neutron-rich nuclei, revealing the emergence of new potential magic numbers N = 14 and N = 16 with a change in the sign of the isospin-dependent term in the coupling. The traditional magic number N = 20 may disappear while N = 28 is expected to be destroyed. Additionally, the shells N = 50 and 82 may persist in the single particle scheme, and significant energy gaps are observed at N = 32 and 34 in neutron-rich calcium isotopes.
Article
Physics, Nuclear
Xin Li, Yunsheng Wang, Xiaoyong Guo, Meina Chen, Jian Liu, Chang Xu
Summary: This study systematically compares the magnetic form factors of odd-A nuclei calculated with relativistic and non-relativistic models. The results show that both models can describe the magnetic form factors in spherical and deformed cases, and the discrepancies reflect the differences in the descriptions of the single-particle orbital between the two models.
Article
Astronomy & Astrophysics
Yue Zhang, Yu-Xuan Luo, Quan Liu, Jian-You Guo
Summary: In this study, the Pseudospin symmetry (PSS) in resonant states in deformed nuclei is examined for the first time by solving the Dirac equation in the complex-momentum representation using a potential with quadrupole deformation obtained from relativistic mean-field calculations. By analyzing the energies, widths, and density distributions of single-particle resonant states, it is found that the PSS of resonant states is well preserved in deformed nuclei, with small pseudospin splittings and similar radial density distributions between the resonant pseudospin doublets compared to bound states. Furthermore, the dependencies of PSS on nuclear deformations and potential shape are comprehensively studied, providing insights into the evolution of resonant pseudospin doublets in weakly-bound deformed nuclei and their exotic properties.
Article
Physics, Multidisciplinary
Bo Huang, Jian-You Guo, Quan Liu, Shou-Wan Chen
Summary: Pseudospin symmetry (PSS) is an important concept in the study of atomic nuclei. Using the relativistic point-coupling model, this research explores the origin and breaking mechanism of PSS in real nuclei with 208Pb as an example. The presence of PSS in the single particle spectra of heavy nuclei is confirmed, and the influence of different point-coupling interactions on PSS is investigated. It is found that the four-fermion scalar and vector couplings play a dominant role in PSS.
Article
Optics
Johannes Knaute, Philipp Hauke
Summary: The recent advancement in engineering of quantum many-body systems allows for controlled studies of fundamental physics problems. This study focuses on the capability of analog ion traps to explore relativistic meson spectra. Through absorption spectroscopy, low-lying meson excitations can be identified with a good degree of accuracy, even for small system sizes. This proposal provides a way to probe salient features of quantum many-body systems resembling meson properties in high-energy physics.
Article
Astronomy & Astrophysics
Quan Liu, Yue Zhang, Jian-You Guo
Summary: The study investigates single particle resonances in nuclei using the complex momentum representation method, showcasing the pseudospin symmetry and its dependence on potential parameters. Changes in the Woods-Saxon potential parameters reflect the evolution of the nuclear field from stable to drop-line nuclei, aiding in understanding the level structure of weakly bound nuclei and their exotic properties.
Article
Astronomy & Astrophysics
I. L. Buchbinder, S. A. Fedoruk, A. P. Isaev, V. A. Krykhtin
Summary: In this study, a complete off-shell Lagrangian description is developed for the free 4D, N = 1 supersymmetric theory of infinite spin. The formulation of bosonic and fermionic fields is done in terms of spin-tensor fields with dotted and undotted indices. The Lagrangians for bosonic and fermionic infinite spin fields entering into the on-shell supersymmetric model are derived using the BRST method. The Lagrangian for this supersymmetric model is written in terms of complex infinite spin bosonic fields and infinite spin fermionic Weyl fields, subject to supersymmetry transformations.
Article
Physics, Nuclear
Seonghyun Kim, Myeong-Hwan Mun, Myung-Ki Cheoun, Eunja Ha
Summary: The study explores ground state properties of Pb isotopes between neutron and proton drip-lines using the deformed relativistic Hartree-Bogoliubov theory in continuum, identifying candidates for nuclear shape coexistence and determining neutron skin thickness compared to experimental data. The results show consistency with recent reports on shape coexistence and neutron skin thickness of certain Pb isotopes.
Article
Materials Science, Multidisciplinary
Yongxin Zeng, Nemin Wei, Allan H. MacDonald
Summary: This article predicts the occurrence of layer pseudospin order in double-moire strongly correlated two-dimensional electron systems. The similarities and differences in the competition between the two types of order in quantum Hall and double-moire systems are discussed, and the findings are related to previous research on electronic ferroelectrics using the Falicov-Kimball models.
Article
Physics, Multidisciplinary
Jeet Amrit Pattnaik, M. Bhuyan, R. N. Panda, S. K. Patra
Summary: Ground-state properties for isotopic chain of Ca, Sn, Pb, and Z = 120 nuclei are calculated using various forces and sets in the relativistic mean-field approximation. A three-point formula is used to locate magic numbers in the superheavy region and explain observed kinks. Peeks are found at known neutron magic numbers with confirmation of sub-shell and shell closure at specific neutron numbers.
Article
Astronomy & Astrophysics
Patricio Salgado-Rebolledo, Giandomenico Palumbo
Summary: This article proposes a nonrelativistic supergeometric theory that is compatible with the supersymmetric conformal field theory, revealing important features of the Moore-Read state through the introduction of a spin-3/2 field and breaking supersymmetry, and establishes a purely bosonic topological action.
Article
Physics, Multidisciplinary
Ozlem Yesiltas, Aynur Ozcan
Summary: The authors generalize solutions of the radial Dirac equation with a tensor potential to exceptional orthogonal Hermite polynomials and derive new general rational potential models, which generalize the nonlinear isotonic potential families and are also energy dependent.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Astronomy & Astrophysics
C. A. Bertulani, M. S. Hussein, S. Typel
Article
Physics, Nuclear
S. Typel
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2018)
Article
Astronomy & Astrophysics
Tobias Fischer, Niels-Uwe F. Bastian, Meng-Ru Wu, Petr Baklanov, Elena Sorokina, Sergei Blinnikov, Stefan Typel, Thomas Klahn, David B. Blaschke
Article
Physics, Nuclear
C. Spitaleri, S. Typel, C. A. Bertulani, A. M. Mukhamedzhanov, T. Kajino, M. Lattuada, A. Cvetinovic, S. Messina, G. L. Guardo, N. Soic, M. Milin, S. S. Perrotta, Chengbo Li, P. Colovic, G. D'Agata, D. Dell'Aquila, C. G. Fatuzzo, M. Gulino, S. Q. Hou, M. La Cognata, D. Lattuada, D. Nurkic, R. Popocovski, N. Skukan, S. Szilner, O. Trippella, M. Uroic, N. Vukman
Summary: The study investigated the He-3+He-5 -> 2 alpha reaction in nuclear astrophysics using the Trojan Horse Method for the first time. By selecting the Be-9 reaction and extracting crucial information such as momentum and angular distribution, the experiment provided insights into the virtual reaction's energy dependence and cross section normalization.
EUROPEAN PHYSICAL JOURNAL A
(2021)
Article
Physics, Multidisciplinary
Stefan Typel
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2020)
Article
Multidisciplinary Sciences
Junki Tanaka, Zaihong Yang, Stefan Typel, Satoshi Adachi, Shiwei Bai, Patrik van Beek, Didier Beaumel, Yuki Fujikawa, Jiaxing Han, Sebastian Heil, Siwei Huang, Azusa Inoue, Ying Jiang, Marco Knosel, Nobuyuki Kobayashi, Yuki Kubota, Wei Liu, Jianling Lou, Yukie Maeda, Yohei Matsuda, Kenjiro Miki, Shoken Nakamura, Kazuyuki Ogata, Valerii Panin, Heiko Scheit, Fabia Schindler, Philipp Schrock, Dmytro Symochko, Atsushi Tamii, Tomohiro Uesaka, Vadim Wagner, Kazuki Yoshida, Juzo Zenihiro, Thomas Aumann
Summary: The study of alpha cluster formation on the surface of neutron-rich heavy nuclei using quasi-free alpha cluster-knockout reactions reveals a tight interplay with the neutron skin thickness. This result calls for a revision in the correlation between neutron-skin thickness and the density dependence of the symmetry energy, crucial for understanding neutron stars. Additionally, the observed monotonous decrease of reaction cross sections with increasing mass number provides a natural explanation for the origin of alpha particles in alpha decay.
Proceedings Paper
Astronomy & Astrophysics
Junki Tanaka, Carlos Bertulani, Stefan Typel
10TH EUROPEAN SUMMER SCHOOL ON EXPERIMENTAL NUCLEAR ASTROPHYSICS, 2019
(2020)
Article
Astronomy & Astrophysics
Sebastian Blacker, Niels-Uwe F. Bastian, Andreas Bauswein, David B. Blaschke, Tobias Fischer, Micaela Oertel, Theodoros Soultanis, Stefan Typel
Article
Physics, Nuclear
Tobias Fischer, Stefan Typel, Gerd Roepke, Niels-Uwe F. Bastian, Gabriel Martinez-Pinedo
Article
Physics, Nuclear
Stefan Typel
EUROPEAN PHYSICAL JOURNAL A
(2020)
Article
Physics, Multidisciplinary
S. Typel
NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS
(2018)
Article
Astronomy & Astrophysics
Stefan Typel
Article
Physics, Multidisciplinary
Stefan Typel
FRONTIERS IN PHYSICS
(2018)
Proceedings Paper
Physics, Nuclear
Niels-Uwe F. Bastian, David B. Blaschke, Mateusz Cierniak, Tobias Fischer, Mark A. R. Kaltenborn, Michal Marczenko, Stefan Typel
17TH INTERNATIONAL CONFERENCE ON STRANGENESS IN QUARK MATTER (SQM 2017)
(2018)
Article
Astronomy & Astrophysics
Stefan Typel, David Blaschke
Article
Physics, Nuclear
Mira Varma, Oliver K. Baker
Summary: In this letter, the authors expand upon the previous work to demonstrate the entanglement observed in top quark interactions. They propose that the thermal component caused by proton collisions with top quarks emerges from entanglement within the proton wave function, and they use published results to show the expected behavior.
Article
Physics, Nuclear
E. Ya. Paryev
Summary: In this study, we investigate the near-threshold meson photoproduction from protons and nuclei and explore the possibility of observing non-strange hidden-bottom pentaquark states through differential observables. We calculate the excitation functions and energy/momentum distributions for different production processes and propose that future experiments at high-luminosity electron-ion colliders could provide evidence for the existence of these hidden-bottom pentaquark resonances.
Article
Physics, Nuclear
M. Shariq Asnain, Manoj Kumar Sharma, Mohd. Shuaib, Aquib Siddique, Ishfaq Majeed Bhat, B. P. Singh, R. Prasad
Summary: This study validates the compound nucleus theory using heavy ion beams and different targets. By analyzing cross section data and comparing reaction cross section data, the study confirms the validity of the theory, but also observes discrepancies at lower excitation energies.
Article
Physics, Nuclear
Y. G. Yao, X. Y. Wu, H. Mei
Summary: This study presents a microscopic investigation of the electromagnetic properties of the low-lying states of single-A hypernucleus 9ABe using the HyperGCM method based on covariant density functional theory. The results are compared to those of a particle-rotor model (PRM) and show close agreement. It is found that the electric quadrupole transition strengths are more sensitive to the coupling strengths of the AN interaction than the magnetic moments and M 1 transition strengths.
