Article
Physics, Nuclear
I. A. Mazur, I. J. Shin, Y. Kim, A. I. Mazur, A. M. Shirokov, P. Maris, J. P. Vary
Summary: Theoretical ab initio studies on resonances in the unbound 7He nucleus are conducted. By performing calculations and numerical analysis, the resonant energies and widths are obtained, and both known and unknown resonances are described and interpreted.
Article
Chemistry, Physical
Nejc Nagelj, Alexandra Brumberg, Shoshanna Peifer, Richard D. Schaller, Jacob H. Olshansky
Summary: This study introduces a method to control the thermodynamic driving force for photoexcited charge transfer in quantum dots (QDs) and investigates the electron transfer rates using functionalized QDs. The findings contribute to optimizing charge transfer systems by maximizing the electron transfer rate while minimizing energetic losses.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Astronomy & Astrophysics
Chengrong Deng, Hong Chen, Jialun Ping
Summary: The study reveals that the color-magnetic interaction model cannot fully absorb QCD dynamical effects, and the Coulomb interaction plays a critical role in dynamical model calculations for heavy quarks. Different color configurations dominate in the ground and excited states of the states investigated.
Article
Multidisciplinary Sciences
M. Hbibi, O. Mommadi, S. Chouef, R. Boussetta, L. Belamkadem, A. El Moussaouy, F. Falyouni, C. M. Duque, J. A. Vinasco, C. A. Duque
Summary: This study investigates the effects of confinement potentials, core size, and shell thickness on the confinement of electron, electron-donor atom, and exciton in a cylindrical core/shell/shell quantum dot (CSSQD). The findings suggest that these factors strongly influence the binding energy and energy levels of the particles, which could have implications for modifying electronic and excitonic properties in nanomaterials science.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Nuclear
Chandan Sarma, Praveen C. Srivastava
Summary: In this study, ab initio no-core shell-model (NCSM) calculations were performed for Ne18-24 isotopes using three realistic NN interactions. The results show that the INOY interaction performs better in terms of ground state binding energies, while all three interactions provide good agreement with the experimental low-energy spectra. Higher calculations are needed for long-range observables such as E2 transition strengths, electric quadrupole moments, and point-proton radii to obtain results comparable to the experimental data.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
S. Kim, J. W. Hwang, Y. Satou, N. A. Orr, T. Nakamura, Y. Kondo, J. GIbelin, N. L. Achouri, T. Aumann, H. Baba, F. Delaunay, P. Doornenbal, N. Fukuda, N. Inabe, T. Isobe, D. Kameda, D. Kanno, N. Kobayashi, T. Kubo, S. Leblond, J. Lee, F. M. Marques, R. Minakata, T. Motobayashi, D. Murai, T. Murakami, K. Muto, T. Nakashima, N. Nakatsuka, A. Navin, S. Nishi, S. Ogoshi, H. Otsu, H. Satoh, Y. Shimizu, H. Suzuki, K. Takahashi, H. Takeda, S. Takeuchi, R. Tanaka, Y. Togano, A. G. Tuff, M. Vandebrouck, K. Yoneda
Summary: Unbound states in 17C were studied by removing one neutron from an 18C beam at an energy of 245 MeV/nucleon on a carbon target. The energy spectrum of 17C above the single-neutron decay threshold was reconstructed using invariant mass spectroscopy, revealing resonances at 0.52(2), 0.77(2), 1.36(1), 1.91(1), 2.22(3), and 3.20(1) MeV. Through comparisons with calculations, the resonance at 0.77(2) MeV was tentatively assigned as the second 5/2+ state, while the resonances at 1.91(1) and 3.20(1) MeV were identified as p-shell hole states with spin-parities 1/2-1 and 3/2-1, respectively. A YSOX shell-model Hamiltonian based on the monopole-based universal interaction provided a good description of the results.
Article
Nanoscience & Nanotechnology
Jiang Guo, Xu Li, Hu Liu, David P. Young, Gang Song, Kenan Song, Jianfeng Zhu, Jie Kong, Zhanhu Guo
Summary: In this study, core-shell structured polyaniline nanocomposites with tunable magnetoresistance were successfully synthesized through facial surface-initiated polymerization method with assistance of various nanocarbons. The improved dielectric properties and typical semiconducting behavior were observed in the PANI nanocomposites. Positive magnetoresistance was observed in all samples, and the magnetoresistance value can be controlled by the type and loading percentage of nanocarbons.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Chemistry, Applied
Kang Li, Liang Yu, Juanjuan Cai, Lixiong Zhang
Summary: In this study, C@TiO2 core-shell adsorbents with large surface area and hierarchical pores were successfully prepared, showing high adsorption capacity for cationic dyes. The adsorbents maintained high adsorption capacity after multiple cycles, demonstrating potential practical applications.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Multidisciplinary Sciences
Morteza Sarmadi, Christina Ta, Abigail M. VanLonkhuyzen, Dominique C. De Fiesta, Maria Kanelli, Ilin Sadeghi, Adam M. Behrens, Bailey Ingalls, Nandita Menon, John L. Daristotle, Julie Yu, Robert Langer, Ana Jaklenec
Summary: This study explores a new microfabrication technique for the fabrication of injectable microparticles with a hollow core-shell structure and pulsatile release kinetics. The sudden increase in porosity of the polymeric matrix leads to the formation of a porous path connecting the core to the environment, enabling pulsatile release. The release kinetics of the microparticles were found to be primarily independent of particle geometry but highly dependent on composition. A qualitative technique was developed to study the pH pattern within the particles, and a computational model successfully simulated the particle deformations before release.
Article
Nanoscience & Nanotechnology
Xiufeng Li, Jasper van der Gucht, Philipp Erni, Renko de Vries
Summary: This study presents a method for creating a soft functional material directly from legume flours, by extracting globulins from soy and pea flours and mixing them with gum arabic to form a coacervate. The low interfacial tensions of the coacervates promote the deposition of a shell of coacervate material around oil droplets, demonstrating the potential fabrication of precise core-shell microcapsules from plant-based ingredients.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Carolina Martinez-Strasser, Yuriko Baba, Alvaro Diaz-Fernandez, Francisco Dominguez-Adame
Summary: The study investigates novel spherical core-shell nanoparticles with band inversion, showing robust midgap bound states and the tunability of energy levels through shell thickness. This discovery opens up possibilities for applications in electronics and optoelectronics.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Astronomy & Astrophysics
Hong-Tao An, Kan Chen, Zhan-Wei Liu, Xiang Liu
Summary: The study presents a systematic investigation on the mass spectra of fully heavy pentaquark states and their decay behaviors in the framework of the chromomagnetic interaction model, aiming to assist in the search for exotic pentaquark states in future experiments.
Article
Chemistry, Multidisciplinary
Wenjie Tao, Samantha Carter, Regina Trevino, Weiyao Zhang, Hannah S. Shafaat, Shiyu Zhang
Summary: Treatment of a dicopper(I,I) complex with excess amounts of NO leads to the formation of a dicopper dinitrosyl complex capable of releasing NO and reacting to produce N2O.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
You-Shi Guo, Shun-Ze Zhan, Jia-Jing Zhong, Weigang Lu, Seik Weng Ng, Dan Li
Summary: In this study, we successfully synthesized high-nuclear regioisomeric core-shell metallofullerenes using heteroleptic ligands, and also demonstrated the formation of a polymeric ExMF structure.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Anna N. Morozovska, Eugene A. Eliseev, Salia Cherifi-Hertel, Dean R. Evans, Riccardo Hertel
Summary: The study explores the possibility of controlling the polarity and morphology of equilibrium domain structures in nanosized ferroelectric cores covered with ultrathin shell of screening charge through an external electric field, which can induce changes to the labyrinth structure by controlling the maze polarity.
Correction
Physics, Multidisciplinary
A. Koszorus, X. F. Yang, W. G. Jiang, S. J. Novario, S. W. Bai, J. Billowes, C. L. Binnersley, M. L. Bissell, T. E. Cocolios, B. S. Cooper, R. P. de Groote, A. Ekstrom, K. T. Flanagan, C. Forssen, S. Franchoo, R. F. Garcia Ruiz, F. P. Gustafsson, G. Hagen, G. R. Jansen, A. Kanellakopoulos, M. Kortelainen, W. Nazarewicz, G. Neyens, T. Papenbrock, P. -G. Reinhard, C. M. Ricketts, B. K. Sahoo, A. R. Vernon, S. G. Wilkins
Summary: The correction to the paper has been published.
Article
Physics, Multidisciplinary
A. Koszorus, X. F. Yang, W. G. Jiang, S. J. Novario, S. W. Bai, J. Billowes, C. L. Binnersley, M. L. Bissell, T. E. Cocolios, B. S. Cooper, R. P. de Groote, A. Ekstrom, K. T. Flanagan, C. Forssen, S. Franchoo, R. F. Garcia Ruiz, F. P. Gustafsson, G. Hagen, G. R. Jansen, A. Kanellakopoulos, M. Kortelainen, W. Nazarewicz, G. Neyens, T. Papenbrock, P. -G. Reinhard, C. M. Ricketts, B. K. Sahoo, A. R. Vernon, S. G. Wilkins
Summary: Nuclear charge radii serve as sensitive probes of the nucleon-nucleon interaction and nuclear matter properties, posing a challenge for nuclear theory. Experimental evidence suggests a new magic neutron number at N=32 in the calcium region, with unexpectedly large increases in charge radii raising questions about nuclear size evolution in neutron-rich systems. Advanced nuclear theories offer different explanations for the odd-even variations and notable increase in charge radii beyond N=28, highlighting limitations in our understanding of neutron-rich systems and issues in current nuclear theory models.
Article
Physics, Nuclear
Sean B. S. Miller, Andreas Ekstrom, Christian Forssen
Summary: In this paper, the efficiency, precision, and accuracy of computing elastic nucleon-nucleon (NN) scattering amplitudes with the wave-packet continuum discretisation method (WPCD) are analyzed. The results show that WPCD is a promising method for computationally efficient calculations of NN scattering amplitudes, with the potential for further improvement in accuracy by increasing the number of wave-packets.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2022)
Article
Physics, Multidisciplinary
Baishan Hu, Weiguang Jiang, Takayuki Miyagi, Zhonghao Sun, Andreas Ekstroem, Christian Forssen, Gaute Hagen, Jason D. Holt, Thomas Papenbrock, S. Ragnar Stroberg, Ian Vernon
Summary: The study investigates the influence of nuclear forces on heavy atomic nuclei and provides insights into predicting nuclear properties and neutron stars. By utilizing advanced methods and techniques, researchers can quantitatively predict the properties of Pb-208 and obtain relatively accurate results. The findings demonstrate the importance of realistic forces in heavy atomic nuclei and enable quantitative predictions across the nuclear landscape.
Article
Astronomy & Astrophysics
Ayala Glick-Magid, Christian Forssen, Daniel Gazda, Doron Gazit, Peter Gysbers, Petr Navratil
Summary: Precision measurements of beta-decay observables provide a way to search for deviations from the Standard Model, which requires accompanying first-principles calculations. In this study, nuclear structure corrections for the beta-decay of He-6 are computed using the impulse approximation and wave functions calculated with the ab initio no-core shell model. The results present a novel and comprehensive analysis of theoretical uncertainties, showing that the computed nuclear corrections significantly deviate from the naive Gamow-Teller predictions within the sensitivity of future experiments, emphasizing the importance of accurate assessment in the search for physics beyond the Standard Model.
Article
Physics, Multidisciplinary
Weiguang Jiang, Christian Forssen
Summary: We introduce a Bayesian sampling method called sampling/importance resampling and discuss its specific usefulness in nuclear theory. By analyzing a toy problem and presenting realistic applications, we demonstrate the method's effectiveness in inferring posterior distributions and estimating posterior probability distributions. However, we also highlight the limitations of the method in extreme situations where it breaks.
FRONTIERS IN PHYSICS
(2022)
Review
Physics, Multidisciplinary
A. Ekstrom, C. Forssen, G. Hagen, G. R. Jansen, W. Jiang, T. Papenbrock
Summary: Ab initio has been used in nuclear theory for over two decades and its meaning has evolved over time. This article provides an interpretation, a historical review, and a discussion on its present-day relation to theoretical uncertainty quantification.
FRONTIERS IN PHYSICS
(2023)
Article
Multidisciplinary Sciences
Y. Kondo, N. L. Achouri, H. Al Falou, L. Atar, T. Aumann, H. Baba, K. Boretzky, C. Caesar, D. Calvet, H. Chae, N. Chiga, A. Corsi, F. Delaunay, A. Delbart, Q. Deshayes, Zs. Dombradi, C. A. Douma, A. Ekstrom, Z. Elekes, C. Forssen, I. Gasparic, J. -M. Gheller, J. Gibelin, A. Gillibert, G. Hagen, M. N. Harakeh, A. Hirayama, C. R. Hoffman, M. Holl, A. Horvat, A. Horvath, J. W. Hwang, T. Isobe, W. G. Jiang, J. Kahlbow, N. Kalantar-Nayestanaki, S. Kawase, S. Kim, K. Kisamori, T. Kobayashi, D. Koerper, S. Koyama, I. Kuti, V. Lapoux, S. Lindberg, F. M. Marques, S. Masuoka, J. Mayer, K. Miki, T. Murakami, M. Najafi, T. Nakamura, K. Nakano, N. Nakatsuka, T. Nilsson, A. Obertelli, K. Ogata, F. de Oliveira Santos, N. A. Orr, H. Otsu, T. Otsuka, T. Ozaki, V. Panin, T. Papenbrock, S. Paschalis, A. Revel, D. Rossi, A. T. Saito, T. Y. Saito, M. Sasano, H. Sato, Y. Satou, H. Scheit, F. Schindler, P. Schrock, M. Shikata, N. Shimizu, Y. Shimizu, H. Simon, D. Sohler, O. Sorlin, L. Stuhl, Z. H. Sun, S. Takeuchi, M. Tanaka, M. Thoennessen, H. Toernqvist, Y. Togano, T. Tomai, J. Tscheuschner, J. Tsubota, N. Tsunoda, T. Uesaka, Y. Utsuno, I. Vernon, H. Wang, Z. Yang, M. Yasuda, K. Yoneda, S. Yoshida
Summary: Subjecting a physical system to extreme conditions is a common method to gain a better understanding of its organization and structure. The investigation of isotopes with different neutron-to-proton ratios than stable nuclei is an important test for nuclear-structure theories. This study reports the first observation of the decay of O-28 and 27O isotopes and compares their decay energies with theoretical models. The results have implications for the understanding of nuclear structure.
Article
Physics, Nuclear
Sean B. S. Miller, Andreas Ekstrom, Christian Forssen
Summary: We quantify the uncertainty in nd predictions due to the variability of the low-energy constants (LECs) inferred from nucleon-nucleon (NN) scattering data using nucleon-nucleon (NN) interactions from chiral effective field theory (xEFT) up to next-to-next-to-next-to-leading order (N 3LO) and solve the Faddeev equation for elastic scattering using the wave-packet continuum discretization method. We find that the uncertainty of nd predictions is dominated by the xEFT truncation error below N 3LO, and the uncertainty about NN LECs does not significantly contribute to the uncertainty in the low-energy nd continuum, assuming uncorrelated errors.
Article
Physics, Nuclear
Isak Svensson, Andreas Ekstrom, Christian Forssen
Summary: We use Bayesian methods and Hamiltonian Monte Carlo (HMC) sampling to infer the posterior probability density function (PDF) for low-energy constants (LECs) in a chiral effective field theory (LEFT) description of nucleon-nucleon interaction. First, we condition the inference on scattering data and account for errors. Then, we extend the analysis using importance sampling and empirical determination of scattering length to infer the contact LEC. We conclude that isospin breaking effects can be confidently detected at next-to-next-to-leading order accounting for truncation errors.
Article
Physics, Nuclear
P. Maris, R. Roth, E. Epelbaum, R. J. Furnstahl, J. Golak, K. Hebeler, T. Huether, H. Kamada, H. Krebs, H. Le, Ulf -G. Meissner, J. A. Melendez, A. Nogga, P. Reinert, R. Skibinski, J. P. Vary, H. Witala, T. Wolfgruber
Summary: This paper presents a comprehensive investigation on few-nucleon systems as well as light and medium-mass nuclei, using the current Low Energy Nuclear Physics International Collaboration two-nucleon interactions and three-nucleon forces. By considering higher-order corrections and performing correlated truncation error analysis, the resulting Hamiltonian is shown to successfully predict various observables and spectra of nucleon-deuteron scattering and light p-shell nuclei. However, the charge radii are found to be underpredicted by approximately 10% for the oxygen isotopes and almost 20% for 40Ca and 48Ca.
Article
Physics, Nuclear
D. Gazda, T. Yadanar Htun, C. Forssen
Summary: The study utilizes realistic interactions obtained from chiral effective field theory (chi EFT) and the ab initio no-core shell model (NCSM) to investigate the energy levels of H-3,4(Lambda) and He-4,5(Lambda) systems with strangeness S = -1. The research focuses on quantifying the finite precision of theoretical predictions related to nuclear physics uncertainties. Results show that model uncertainties of ground-state Lambda separation energies are approximately 20 (100) keV in H-3(Lambda) (H-4(Lambda), He), and approximately 400 keV in He-5(Lambda). Method uncertainties also play a significant role in certain excited states.
Article
Physics, Nuclear
T. Djarv, A. Ekstrom, C. Forssen, H. T. Johansson
Summary: The study predicts the A = 6 nuclear level scheme based on chiral effective field theory (chi EFT), finding slight underbinding of He-6 and Li-6, consistent with experimental data within theoretical error bars. By considering correlated chi EFT-truncation errors, more precise predictions are obtained for separation energies, suggesting potential further reduction of error bars by extending the model space used by JUPITERNCSM.
Article
Physics, Nuclear
Isak Svensson, Andreas Ekstrom, Christian Forssen
Summary: The number of low-energy constants in chiral effective field theory grows rapidly with increasing chiral order. In this study, a Hamiltonian Monte Carlo algorithm is introduced for sampling the posterior probability density function of the low-energy constants up to next-to-next-to-leading order. The results show that the sampling efficiency of the Hamiltonian Monte Carlo algorithm is significantly higher compared to another sampling algorithm. The study also finds that the next-to-next-to-leading order truncation error dominates the error budget.
Article
Physics, Nuclear
S. Wesolowski, I Svensson, A. Ekstrom, C. Forssen, R. J. Furnstahl, J. A. Melendez, D. R. Phillips
Summary: This study explores the constraints on the three-nucleon force (3NF) of chiral effective field theory (xEFT) by incorporating experimental error, computational method uncertainty, and the uncertainty due to truncation of the xEFT expansion at next-to-next-to-leading order. Including xEFT truncation errors in the analysis is crucial for obtaining a consistent solution for the binding energy and decay rate of certain nuclear states. The findings suggest an xEFT expansion parameter of Q = 0.33 +/- 0.06 for the observed nuclear properties.