Article
Astronomy & Astrophysics
P. Sarriguren
Summary: Elastic electron scattering from oriented odd -A axially deformed nuclei is studied in the plane-wave Born approximation. The interference form factors between monopole and quadrupole Coulomb terms that characterize the nuclear response with aligned nuclear targets are shown to increase or decrease the unpolarized cross-section, depending on the sign of the quadrupole deformation. This feature provides valuable information on the nuclear deformation that can be used as a signature of the oblate or prolate character of the nuclear shape. Some selected cases of nuclei with different spins are presented that exemplify the scope of the method.
Article
Physics, Multidisciplinary
S. J. Kole, Gareth P. Alexander, Sriram Ramaswamy, Ananyo Maitra
Summary: The study demonstrates that the chirality plays an important role in the dynamics of layered liquid crystals in active systems, which can be used to engineer a columnar array with an antiferromagnetic vorticity alignment.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Nuclear
Y. K. Wang, P. W. Zhao, J. Meng
Summary: In this study, the effects of four-quasiparticle configurations and time-odd interactions on the energy levels of Fe-60 were investigated using configuration-interaction projected density functional theory. It was found that the predicted yrast states exhibit a four-quasiparticle structure above spin I = 16, and the inclusion of time-odd interactions improves the agreement with experimental data by increasing the kinetic moments of inertia and delaying the first band crossing.
Article
Materials Science, Multidisciplinary
Philipp Werner, Yuta Murakami
Summary: The passage discusses the impact of laser driving on electronic orders and the emergence of hidden phases in Cs3C60. The study finds that photodoping can result in a hidden phase with broken orbital symmetry.
Article
Multidisciplinary Sciences
Alexandrina Petrovici
Summary: The shape coexistence and mixing as well as the strengths of E0 transitions in Se-70 and Kr-70 mirror nuclei were investigated using a beyond-mean-field complex Excited Vampir model. The results show the effects of shape mixing on the strengths of different transitions.
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
F. Mercier, J. -P. Ebran, E. Khan
Summary: This study investigates the impact of tensor terms on infinite nuclear matter and deformed nuclei by developing new density-dependent functionals. The results show that including tensor terms improves the binding energies, spin-orbit splittings, and gaps in the nuclear chart, as well as leads to small modifications in the potential energy surface and densities. In infinite matter, the Dirac mass is shifted to a larger value in better agreement with experiments. In conclusion, incorporating additional tensor terms improves the description of nuclear properties.
Article
Physics, Nuclear
B. Mei
Summary: The study reveals a universal odd-even staggering (OES) relation in fragmentation and spallation reactions, which can be used to accurately calculate cross sections and show good agreement with experimental data. The simple OES relations proposed in this work provide new paths for very accurate and fast calculations of fragmentation and spallation cross sections, and can be used to explore undiscovered isotopes.
Article
Optics
Yue-Xun Huang, Ming Li, Zi-Jie Chen, Yan-Lei Zhang, Xu-Bo Zou, Guang-Can Guo, Chang-Ling Zou
Summary: Mean-field treatment (MFT) is commonly used for approximating the dynamics of quantum optics systems. However, neglecting quantum correlations between modes can lead to unexpected quantum effects. This study presents a theoretical framework based on perturbation theory and MFT to capture these effects and predicts the form and relationship of nonlinear dissipation, parasitic Hamiltonian, and nonlinear coupling rate. The framework is applied to quantum frequency conversion and shows excellent agreement with numerical simulations, revealing the neglected quantum effects by MFT and providing a more precise framework for nonlinear and quantum optics.
LASER & PHOTONICS REVIEWS
(2023)
Article
Physics, Nuclear
D. G. Roux, W. C. Ma, G. B. Hagemann, D. R. Elema, P. Fallon, A. Gorgen, B. Herskind, H. Huebel, J. C. Marsh, G. Sletten, D. Ward, J. N. Wilson
Summary: High-spin states of the odd-odd nucleus Lu-168 were successfully populated and studied, with new rotational bands and interband linking transitions revealed. The study also identified band crossings and signature inversions, providing insights into the nature of the nucleus.
Article
Optics
Fabio Zoratti, Giacomo De Palma, Bobak Kiani, Quynh T. Nguyen, Milad Marvian, Seth Lloyd, Vittorio Giovannetti
Summary: In this study, we propose a cost function based on the quantum Wasserstein distance to improve existing variational quantum algorithms for quantum noise on a quantum circuit. By using this method, we can significantly increase both the probability of successful training and the fidelity of the recovered state.
Article
Chemistry, Physical
Susannah Bourne Worster, Oliver Feighan, Frederick R. Manby
Summary: Delta SCF theory is a conceptually simple and computationally inexpensive method for finding excited states with competitive accuracy. However, a potential issue with Delta SCF transition dipoles is origin dependence induced by nonorthogonality of ground and excited states, which can be corrected by symmetric orthogonalization.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
Sk M. Ali, D. Gupta, K. Kundalia, Swapan K. Saha, O. Tengblad, J. D. Ovejas, A. Perea, I Martel, J. Cederkall, J. Park, S. Szwec
Summary: The article discusses an unresolved problem in nuclear astrophysics regarding the anomaly in lithium abundance and attempts to explain it through resonance enhancement. The authors conducted an experiment to study the contributions of different excited states in the 7Be(d, p)8Be* reaction, but found that these contributions still cannot account for the lithium anomaly.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Qinghong Yang, Zhesen Yang, Dong E. Liu
Summary: The study reveals the intrinsic superconductivity in a dissipative Floquet electronic system with attractive interactions, where a time-periodic bosonic condensation leads to an intrinsic dissipative Floquet superconducting phase. Despite the presence of dissipation, bosonic modes of the condensation remain propagating.
Article
Physics, Multidisciplinary
Juzo Zenihiro, Tomohiro Uesaka, Hiroyuki Sagawa, Satoshi Yoshida
Summary: The study examines the proton density polarization in Ca-48 caused by the addition of eight neutrons on the Ca-40 core. The value R shows correlations with the symmetry energy parameters J and L, but not with the isoscalar incompressibility K-infinity. The experimental value R can be reproduced by theoretical calculations using the EDFs with L = 25-50 MeV.
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2021)
Article
Physics, Nuclear
B. Bally, A. Sanchez-Fernandez, T. R. Rodriguez
Summary: The numerical code TAURUSvap can solve the variation after particle-number projection equations for real general Bogoliubov quasiparticle states, with the ability to perform calculations for different nuclear states under multiple constraints.
EUROPEAN PHYSICAL JOURNAL A
(2021)
Article
Physics, Nuclear
J. Dobaczewski, P. Baczyk, P. Becker, M. Bender, K. Bennaceur, J. Bonnard, Y. Gao, A. Idini, M. Konieczka, M. Kortelainen, L. Prochniak, A. M. Romero, W. Satula, Y. Shi, T. R. Werner, L. F. Yu
Summary: The new version of the HFODD code includes a variety of new features such as zero-range and finite-range terms, as well as corrections for several errors in previous versions.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2021)
Article
Physics, Nuclear
Guillaume Scamps, Stephane Goriely, Erik Olsen, Michael Bender, Wouter Ryssens
Summary: A new mass model based on Skyrme-EDF was developed, using a three-dimensional coordinate-space representation to consider both axial and triaxial deformations during adjustment. To handle the increase in computational cost, a committee of multilayer neural networks was employed to guide towards the overall best fit in parameter space. The resulting BSkG1 mass model achieved good agreement with known masses and charge radii.
EUROPEAN PHYSICAL JOURNAL A
(2021)
Article
Physics, Multidisciplinary
Benjamin Bally, Michael Bender, Giuliano Giacalone, Vittorio Soma
Summary: This study utilizes data from high-energy collision experiments to demonstrate the evidence of nonaxiality in the ground state of 129Xe ions, indicating the presence of triaxial deformation in the low-energy structure. This finding showcases the unique capabilities of precision collider machines in imaging the collective structure of atomic nuclei.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Nuclear
M. Hukkanen, W. Ryssens, P. Ascher, M. Bender, T. Eronen, S. Grevy, A. Kankainen, M. Stryjczyk, L. Al Ayoubi, S. Ayet, O. Beliuskina, C. Delafosse, W. Gins, M. Gerbaux, A. Husson, A. Jokinen, D. A. Nesterenko, I. Pohjalainen, M. Reponen, S. Rinta-Antila, A. De Roubin, A. P. Weaver
Summary: Precision mass measurements of neutron-rich rhodium isotopes have been conducted at the JYFLTRAP Penning trap mass spectrometer at the IGISOL facility. The study reports on the masses of ground and isomeric states in Rh-110, Rh-112, Rh-114, Rh-116, Rh-118, and Rh-120. The phase-imaging ion-cyclotron-resonance (PI-ICR) technique was used to separate and measure the isomeric states for the first time.
Article
Physics, Nuclear
Wouter Ryssens, Guillaume Scamps, Stephane Goriely, Michael Bender
Summary: Large-scale models of nuclear structure are essential for providing consistent datasets for nucleosynthesis simulations. In the recent study, the BSkG2 model based on an energy density functional was introduced, which considers triaxial deformation and time-reversal symmetry breaking. The BSkG2 model achieves a state-of-the-art global description of nuclear ground state properties and demonstrates unprecedented accuracy in reproducing fission properties and known masses. The model's ability to accurately calculate fission barriers of actinide nuclei, including odd-mass and odd-odd systems, highlights its importance for large-scale studies of nuclear structure.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Article
Physics, Nuclear
B. Bally, G. Giacalone, M. Bender
Summary: In this article, the structure of Au-197 is studied using multi-reference energy density functional calculations. The results show good agreement with experimental data and provide information about the average deformation and intrinsic shape of the nucleus.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Article
Physics, Nuclear
Wouter Ryssens, Guillaume Scamps, Stephane Goriely, Michael Bender
Summary: Models based on nuclear energy density functionals provide access to various observables for nuclei, and lifting the time-reversal invariance assumption allows us to study ground state properties of odd-mass and odd-odd nuclei. By adjusting parameters and incorporating fission barrier information, the resulting model shows high accuracy in known nuclear masses, charge radii, and fission isomer excitation energies.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Physics, Nuclear
Benjamin Bally, Giuliano Giacalone, Michael Bender
Summary: This study reports on state-of-the-art calculations of the triaxial structure of Xe-128, Xe-129, and Xe-130 isotopes using advanced computational methods. The research shows that all three isotopes have a prominent triaxial ground state, and the calculations reproduce the experimental results fairly well.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Physics, Nuclear
M. Frosini, T. Duguet, J-P Ebran, B. Bally, H. Hergert, T. R. Rodriguez, R. Roth, J. M. Yao, V Soma
Summary: This article presents the first realistic results of a novel multi-reference perturbation theory (PGCM-PT) that can accurately describe the ground and low-lying excited states of complex nuclei within a symmetry-conserving scheme. The study demonstrates that PGCM-PT(2) can reproduce the exact binding energies of closed and open-shell nuclei with high accuracy and can capture essential corrections to low-lying excitation energies by including dynamical correlations.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Physics, Nuclear
Wouter Ryssens, Michael Bender
Summary: Efforts to improve the spectroscopic quality of nuclear energy density functionals of the Skyrme type are ongoing, with recent exploration of higher-order gradient terms. While advancements have been made in extending the traditional form of EDFs, further work is needed to better discriminate between NLO and N2LO terms and exploit the additional degrees of freedom offered by the latter.
Article
Physics, Nuclear
Benjamin Bally, Michael Bender
Summary: This work provides a general introduction to the projection method for restoring broken symmetries in many-body systems, investigates the numerical implementation and practical aspects of particle-number and angular-momentum projection, and analyzes the implications of intrinsic symmetries of the symmetry-breaking states when projecting them. The results include a concise presentation of the method, achieving high accuracy in numerical evaluations, and reducing computational costs by leveraging symmetries of reference states. The quantum-number projection technique is versatile, efficient, and can be applied to various nuclear systems to restore their symmetry.