Article
Physics, Multidisciplinary
Jia-Hui Zhang, Fu-Quan Dou
Summary: This study proposes a possible alternative route based on a recently developed non-Hermitian shortcut to adiabaticity method for efficient transfer of molecules, which is robust against external field parameter fluctuations.
NEW JOURNAL OF PHYSICS
(2021)
Article
Physics, Multidisciplinary
N. Ikeno, T. Nishi, K. Itahashi, N. Nose-Togawa, A. Tani, S. Hirenzaki
Summary: We report on the sensitivity of the observables of deeply bound pionic atoms to the pion-nucleon sigma term σN-π, and suggest that the energy gap and width of certain states can be important observables in determining the value of σN-π.
ACTA PHYSICA POLONICA A
(2022)
Article
Materials Science, Multidisciplinary
Mithilesh Nayak, Frederic Mila
Summary: Motivated by the lack of direct evidence, this study investigates the temperature dependence of the dynamical spin structure factor in Heisenberg ferromagnetic spin chains using the time-dependent thermal density matrix renormalization group algorithm. The results show that for spin 1/2, the bound state appears as a well-defined excitation within a specific temperature range, suggesting the possibility of detecting it with inelastic neutron scattering. However, for spin 1, the situation is more complex due to the competition between the bound state and the antibound state.
Article
Materials Science, Multidisciplinary
Jiahui Zhang, Nida Naim, Li Deng, Yueping Niu, Shangqing Gong
Summary: In this paper, the non-Hermitian stimulated Raman shortcut-to-adiabatic passage (NH-STIRSAP) is used to create ultracold deeply-bound molecules. By assuming large single-photon detuning and/or strong loss rate of the excited level, the NH three-level system can be simplified to an effective two-level system. The NH-STIRSAP achieves complete population transfer from the Feshbach to the ground level, greatly improving the creation efficiency of ultracold deeply-bound molecules. The robustness and fast transfer speed of NH-STIRSAP facilitate the creation and detection of these molecules.
RESULTS IN PHYSICS
(2023)
Article
Astronomy & Astrophysics
Gilberto Colangelo, Martin Hoferichter, Bastian Kubis, Malwin Niehus, Jacobo Ruiz de Elvira
Summary: This study investigates the pion-mass dependence of the two-pion channel in the hadronic-vacuum-polarization (HVP) contribution to the anomalous magnetic moment of the muon a(mu)(HVP). The researchers utilize an Omnes representation for the pion vector form factor with the phase shift derived from the inverse-amplitude method (IAM). The findings provide constraints on the dominant isospin-1 part of the isospin-symmetric light-quark contribution and offer improved control over the chiral extrapolation of a(mu)(HVP), which is essential for lattice-QCD calculations performed at larger-than-physical pion masses.
Article
Astronomy & Astrophysics
Jian-Wei Qiu, Zhite Yu
Summary: Generalized parton distributions (GPDs) are nonperturbative functions providing tomographic images of hadronic partonic structures. This study introduces a type of exclusive process, known as single diffractive hard exclusive processes (SDHEPs), and discusses the conditions for factorization into GPDs. It is demonstrated that SDHEP is both capable of covering known processes for extracting GPDs and motivated for the search of new processes. The sensitivity of SDHEP to the x-dependence of GPDs is examined.
Article
Physics, Multidisciplinary
Meirav Pinkas, Or Katz, Jonathan Wengrowicz, Nitzan Akerman, Roee Ozeri
Summary: The formation of weakly bound molecular states between an ultracold atom and a single trapped ion in the presence of a linear Paul trap is observed. It is found that bound states can efficiently form in binary collisions, enhancing the rate of inelastic processes. The dependence of the molecular properties on the trapping parameters enables further studies on the characterization and control of ultracold collisions.
Article
Physics, Multidisciplinary
Maksim Kunitski, Qingze Guan, Holger Maschkiwitz, Jorg Hahnenbruch, Sebastian Eckart, Stefan Zeller, Anton Kalinin, Markus Schoeffler, Lothar Ph H. Schmidt, Till Jahnke, Dorte Blume, Reinhard Doerner
Summary: The research explores the modulation of interactions between helium atoms in a helium dimer using ultrashort laser fields, demonstrating dissociation and alignment of wave packets. By controlling atomic interactions with external fields, new branches in physics are opened up and provide a technique for studying exotic and otherwise hardly accessible quantum systems.
Article
Physics, Multidisciplinary
Kazunori Itonaga, Toshio Motoba, Thomas A. Rijken
Summary: We investigate the impact of the three-body weak interaction Lambda NN -> NNN on two-nucleon induced hypernuclear non-mesonic weak decay. The study is based on the meson-pair exchange model and the Loiseau-Nogami-Ross approximation is used to derive effective two-body Lambda N -> NN weak potentials from the three-body interactions. Our calculations show that the effective two-body potentials derived from the three-body weak interactions can account for the non-mesonic decays of light and p-shell hypernuclei, although there are still uncertainties in the results.
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2023)
Article
Optics
Dan Luo, Jia Zeng, Quan Zhao, Jianxing Pan, Chaoyu Xu, Beibei Yu, Xiangli Zhang, Zhichao Wu, Tianye Huang
Summary: We demonstrate the interaction between different types of vector solitons in a mode-locked fiber laser. By adjusting pump power and cavity birefringence, single, dual, and bound state vector solitons can be selectively acquired, and all types of vector solitons exhibit energy exchange phenomenon on spectral sidebands. Numerical simulation confirms the key role of soliton separation in determining the formation of energy exchange sidebands. These findings provide insights into the evolution of soliton interaction and enhance the understanding of soliton dynamics.
OPTICS COMMUNICATIONS
(2023)
Article
Physics, Nuclear
Zi-Long Li, Xing-Yue Tan, Zhu-Feng Zhang, Zhen-Yang Wang, Xin-Heng Guo
Summary: In this study, we systematically investigated systems with two pseudoscalar mesons and obtained some conclusions by numerically solving the Bethe-Salpeter equation.
Article
Physics, Multidisciplinary
Natasha Tomm, Sahand Mahmoodian, Nadia O. Antoniadis, Ruediger Schott, Sascha R. Valentin, Andreas D. Wieck, Arne Ludwig, Alisa Javadi, Richard J. Warburton
Summary: The interaction between photons and a single two-level atom is a fundamental concept in quantum physics, revealing nonlinearity and the emergence of photon bound states. The observation of a photon-number-dependent time delay in the scattering off a single artificial atom confirms the existence of stimulated emission and demonstrates the dependence of scattering dynamics on the number of photons involved in the light-matter interaction.
Article
Physics, Nuclear
R. Francener, V. P. Goncalves, B. D. Moreira
Summary: This paper investigates the photoproduction of QED bound states in proton-proton, proton-nucleus, and nucleus-nucleus collisions at different energies, considering accurate treatment of absorptive corrections and nuclear form factors. The total cross sections for the production of singlet and triplet states, with different leptons, are estimated. The impact of Coulomb corrections on parapositronium production in heavy ion collisions is also evaluated. A large number of events associated with the production of electron-positron and muon-antimuon states in hadronic collisions are predicted.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Astronomy & Astrophysics
Shuo Liu, Chang Xu
Summary: We investigate the possibility of bound-state double-ss decay in bare atoms, where electrons remain in bound atomic states instead of being emitted into the continuum. We calculate the phase space factors of both two-neutrino and neutrinoless double-ss decay in potential candidates and compare the decay rates in bare atoms with those in neutral atoms. In certain circumstances, bound-state double-ss decay could dominate in bare atoms and lead to significantly increased decay rates.
Article
Chemistry, Physical
Yue-Rou Zhang, Dao-Fu Yuan, Lai-Sheng Wang
Summary: This article reports the observation of a core-excited dipole-bound state (DBS) in the pyrazolide anion. The binding energy of this core-excited DBS is measured, thanks to the favorable electronic structure of the neutral pyrazolyl core.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
