Article
Materials Science, Multidisciplinary
Zuo Wang, Li-Jun Lang, Liang He
Summary: We investigate the ground state and quantum dynamics of an interacting bosonic chain with nonreciprocal hopping. In systems with noninteger filling, the ground state supports Mott insulators due to the competition between nonreciprocal hopping and the on-site interaction. The conservation laws for non-Hermitian systems show a stark difference compared to their Hermitian counterpart. We establish a generic approach for constructing conserved quantities and illustrate it in the studied system. Mott insulators with noninteger filling and non-Hermitian conservation laws can be observed in ultracold atoms in optical lattices with engineered nonreciprocal hopping.
Article
Quantum Science & Technology
Wentao Chen, Shuaining Zhang, Jialiang Zhang, Xiaolu Su, Yao Lu, Kuan Zhang, Mu Qiao, Ying Li, Jing-Ning Zhang, Kihwan Kim
Summary: This article introduces a quantum error mitigation method called probabilistic error cancellation (PEC), which can be applied to various quantum hardware platforms and quantum algorithms. Researchers attempt to benchmark PEC in trapped-ion qubits to improve simulation fidelity and observe the dynamics of the Fermi-Hubbard model.
NPJ QUANTUM INFORMATION
(2023)
Article
Optics
David M. Lancaster, Ugne Dargyte, Sunil Upadhyay, Jonathan D. Weinstein
Summary: Ensemble measurements show that rubidium atoms trapped in solid parahydrogen are suitable for quantum sensing magnetic fields. Laser-induced fluorescence is used to search for single rubidium atom as a quantum sensor. Results indicate no fluorescence in solid parahydrogen and fluorescence in solid neon, with measurements of spectrum, excited-state lifetime, and bleaching effects.
Article
Physics, Fluids & Plasmas
M. Kliczkowski, R. Swietek, L. Vidmar, M. Rigol
Summary: This article investigates the agreement between the average entanglement entropy of midspectrum eigenstates of quantum-chaotic interacting Hamiltonians and that of random pure states. It is found that the leading terms are identical, but the differences in subleading terms remain unclear. State-of-the-art full exact diagonalization calculations are conducted on clean spin-1/2 XYZ and XXZ chains to determine the maximally chaotic regime. The study reveals that the negative O(1) correction for the average entanglement entropy is slightly larger than that predicted for random pure states, and a simple expression is derived to describe the ν dependence of the O(1) deviation.
Article
Physics, Multidisciplinary
Naftali Smith, Pierre Le Doussal, Satya Majumdar, Gregory Schehr
Summary: The study investigates the ground state of N spinless fermions in one dimension under an external potential with long range interactions of the Calogero-Sutherland type, finding a mapping to standard random matrix ensembles for certain potential choices. The research delves into the quantum fluctuations of the fermion number N-D in a macroscopic domain D within the Fermi gas bulk, predicting variance growth based on the Dyson index beta. The results align with the Luttinger liquid theory predictions and offer insights into interacting fermion models that can be mapped onto random matrix models.
Article
Quantum Science & Technology
Yi -Ting Tu, Iksu Jang, Po-Yao Chang, Yu-Chin Tzeng
Summary: The fidelity susceptibility is a useful tool for studying quantum phase transitions in both Hermitian and non-Hermitian quantum systems. This study shows that the fidelity F is always real for PT-unbroken states, and the real part of the fidelity susceptibility Re[XF] corresponds to considering both the PT partner states for PT-broken states. It is also demonstrated that at the second-order exceptional point (EP), the real part of the fidelity between PT-unbroken and PT-broken states is ReF = 21.
Article
Multidisciplinary Sciences
H. Mikaeili, A. Dalafi, M. Ghanaatshoar, B. Askari
Summary: We investigate the realization of optomechanically induced gain in a hybrid optomechanical system with an interacting Bose-Einstein condensate trapped inside an optical lattice generated by an external coupling laser tuned to the red sideband of the cavity. The system behaves as an optical transistor, amplifying weak input optical signals considerably in the cavity output if in the unresolved sideband regime. Controlling the s-wave scattering frequency allows the system to switch from the resolved to unresolved sideband regime and significantly enhance system gain.
SCIENTIFIC REPORTS
(2023)
Article
Astronomy & Astrophysics
Edoardo Giangrandi, Violetta Sagun, Oleksii Ivanytskyi, Constanca Providencia, Tim Dietrich
Summary: We propose a model of asymmetric bosonic dark matter with self-repulsion. By studying different distribution regimes, we find that condensed dark matter leads to smaller radius and tidal deformability compared to pure baryonic stars, while the presence of a dark matter halo increases the tidal deformability and total gravitational mass. We impose constraints on the model parameters based on the self-interaction cross section of dark matter and discuss smoking gun evidence of dark matter presence.
ASTROPHYSICAL JOURNAL
(2023)
Article
Optics
M. Beau, A. del Campo, D. J. Frantzeskakis, T. P. Horikis, P. G. Kevrekidis
Summary: This article investigates the interplay of repulsive short-range and same-sign long-range interactions in the dynamics of dark solitons in a trapped one-dimensional Bose gas. The study shows that single- and multiple-dark-soliton states can exist and are generically robust in the presence of long-range interactions. The frequencies of the soliton oscillations are significantly upshifted as the strength of the long-range interactions is increased.
Article
Physics, Multidisciplinary
Qing Liao, Charly Leblanc, Jiahuan Ren, Feng Li, Yiming Li, Dmitry Solnyshkov, Guillaume Malpuech, Jiannian Yao, Hongbing Fu
Summary: This study reports the first experimental measurement of the quantum metric in a non-Hermitian system. The platform under study is an organic microcavity with exciton-polariton eigenstates, demonstrating exceptional points. The measurement shows the divergence of the quantum metric and determines the scaling exponent to be n = -1.01 +/- 0.08, consistent with the theoretical description of second-order exceptional points.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Tokuro Fukui, Luigi Coraggio, Giovanni De Gregorio, Angela Gargano, Nunzio Itaco, Yuanzhuo Ma, Furong Xu
Summary: The researchers used the shell model with chiral two- and three-nucleon forces to compute the effective Hamiltonian relevant to the valence-model space microscopically and applied it to study the neutron-drip line of calcium isotopes. The simulation indicated that the calculated two-neutron separation energies were consistent with current experiments, suggesting Ca-70 may be bound as predicted by other theoretical attempts.
Article
Nuclear Science & Technology
C. Binnersley, S. F. Ashley, P. Chard, A. Lansdell, G. O'Brien, P. Shaughnessy, M. J. Joyce
Summary: This study describes a simulation-based investigation of three non-destructive approaches using neutrons to quantify water in spent nuclear fuel assemblies. The results show that the moderated gamma-ray assay technique provides the most significant distinction between scenarios with and without water in the fuel assemblies. Water present in the spent fuels significantly perturbs the incident neutron flux. The study highlights that different fuel types and water locations have different impacts on the detection of water.
PROGRESS IN NUCLEAR ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Utku Canci Matur, Nilgun Baydogan
Summary: The thermal neutron effect on copper indium gallium (di)selenide thin film synthesized by the sol-gel dip-coating technique has been explained. Neutron treatment has significant effects on the structural, electrical, and optical characteristics of the thin film.
Article
Chemistry, Multidisciplinary
Shirshendu Chatterjee, Bikash K. Behera, Felix J. Seo
Summary: In this study, a quantum simulation experiment was conducted on an IBM Quantum Computer-IBMq Lima, pairing Hamiltonians of nearest-neighbor interacting superconducting qubits. The fidelity was found to be a function of iteration using different types of algorithms. The experiment demonstrated the differences between experimental and theoretical density matrices and how their behavior changes with iterations.
APPLIED SCIENCES-BASEL
(2023)
Article
Nuclear Science & Technology
G. Bentoumi, R. B. Rogge, F. Ali, L. Li, B. Sur
Summary: A neutron counting technique has been developed and deployed at the NRU reactor for in-beam active neutron interrogation, showing promising results in detecting prompt and delayed neutrons efficiently. This technique could be valuable for non-destructive analysis of large samples with unknown content and origin, especially when the neutron source is weak or the fissile mass is small.
ANNALS OF NUCLEAR ENERGY
(2021)
Article
Astronomy & Astrophysics
Yang Li, James P. Vary
Summary: We propose an analytically solvable 3D light-front Hamiltonian model that extends light-front holography by incorporating finite mass quarks and a longitudinal confinement term. This model is believed to be a suitable improved analytic approximation to low-resolution scale QCD. It maintains desired Lorentz symmetries and shows improved agreement with experimental mass spectroscopy and other properties of light mesons. Notably, the model also respects chiral symmetry and the Gell-Mann-Oakes-Renner relation.
Article
Astronomy & Astrophysics
Jiangshan Lan, Kaiyu Fu, Chandan Mondal, Xingbo Zhao, James P. Vary
Summary: This article obtains the mass spectroscopy of light mesons from the light-front quantum chromodynamics (QCD) Hamiltonian, determined for their constituent quark-antiquark and quark-antiquark-gluon Fock components, together with a three-dimensional confinement. The eigenvectors of the light-front effective Hamiltonian provide a good quality description of the pion electromagnetic form factor, decay constant, and the valence quark distribution functions following QCD scale evolution.
Article
Astronomy & Astrophysics
Sreeraj Nair, Mondal Collaboration, Chandan Mondal, Xingbo Zhao, Asmita Mukherjee, James P. Vary
Summary: In this study, we calculate the TMDs and GPDs of the photon using light-front wave functions, showing excellent agreement with perturbative calculations.
Article
Physics, Nuclear
Peng Yin, Weijie Du, Wei Zuo, Xingbo Zhao, James P. Vary
Summary: The study employed the non-perturbative time-dependent basis function (tBF) approach to investigate deuteron scattering on Pb-208 beyond the Coulomb barrier. Higher-order inelastic scattering effects were found to be noticeable with the tBF method, and by considering only the electric dipole (E1) component of the Coulomb interaction, experimental sub Coulomb barrier elastic cross section ratios were successfully reproduced. The polarization potential correction to the Rutherford trajectory was dominant at very low bombarding energies, while internal transitions induced by the E1 interaction played a significant role at higher bombarding energies.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Zhi Hu, Siqi Xu, Chandan Mondal, Xingbo Zhao, James P. Vary
Summary: This study obtains the leading-twist valence quark transverse-momentum-dependent parton distribution functions (TMD PDFs) for the proton within the basis light-front quantization (BLFQ) framework. The results are consistent with lattice QCD calculations and previous results for the collinear limit. The study also reveals the independence of TMDs and suggests a potential alternative approach.
Article
Astronomy & Astrophysics
Yang Li, Pieter Maris, James P. Vary
Summary: The pion, as the lightest meson, serves as both the Goldstone boson of QCD and the structured bound state of quarks and gluons. By analyzing the conserved axial-vector current and the wave function structures, a sum rule is obtained to incorporate both aspects in a single light-front wave function in the valence space. The sum rule is found to be consistent with chiral symmetry breaking in AdS/QCD using an analytic model based on holography. A remarkable feature of the pion is discovered within this model, where its density is predominantly uniform inside its radius, and good agreement with the experimental pion form factor at spacelike momenta is achieved. (C) 2022 The Author(s). Published by Elsevier B.V.
Article
Astronomy & Astrophysics
Zhimin Zhu, Zhi Hu, Jiangshan Lan, Chandan Mondal, Xingbo Zhao, James P. Vary
Summary: In this study, we investigate the twist-3 transverse-momentum-dependent parton distribution functions (TMDs) of the pion using basis light-front quantization. We decompose the twist-3 TMDs into twist-2 and genuine twist-3 terms and compute them by diagonalizing the light-front QCD Hamiltonian. We also obtain the twist-3 parton distribution functions (PDFs) and show that they satisfy the sum rule, demonstrating the robustness of our approach. This is the first time that theoretical predictions have been made for subleading twist structures of the pion involving interference terms between two light-front Fock sectors.
Article
Astronomy & Astrophysics
Yang Li, Wen-bo Dong, Yi-liang Yin, Qun Wang, J. P. Vary
Summary: In order to solve long-standing puzzles over the charge distribution of relativistic systems like hadrons, we revisit Minkowski's lost legacy on relativistic electromagnetism. Hadrons, characterized by their comparable size and Compton wavelength, rh, are unique relativistic electromagnetic systems. It has been realized that the traditional Sachs definition of the charge distribution based on a non-relativistic formula is invalid. This study shows how various charge distributions proposed in hadronic physics naturally emerge as the multipole moment densities in the macroscopic theory of relativistic electromagnetism.
Article
Physics, Multidisciplinary
P. Maris, H. Le, A. Nogga, R. Roth, J. P. Vary
Summary: We simulate the theoretical ground state energies and their uncertainties for p-shell nuclei using chiral effective field theory internucleon interactions. Our results show that with higher-order two-body potentials and (NLO)-L-2 three-body forces, we accurately predict the ground state energies in the upper p-shell and agree with experimental results. However, the uncertainties from chiral truncation are larger than the numerical uncertainties.
FRONTIERS IN PHYSICS
(2023)
Article
Astronomy & Astrophysics
Tiancai Peng, Zhimin Zhu, Siqi Xu, Xiang Liu, Chandan Mondal, Xingbo Zhao, James P. Vary
Summary: In this study, we obtained the masses, electromagnetic properties, and parton distribution functions (PDFs) of Lambda, Lambda c, and their isospin triplet baryons using a light-front effective Hamiltonian in the leading Fock sector in the basis light-front quantization framework. The masses of these baryons are within the experimental range and the electromagnetic properties are consistent with experimental data, lattice QCD simulations, and other theoretical calculations.
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, Multidisciplinary
Wenyang Qian, Robert Basili, Soham Pal, Glenn Luecke, James P. Vary
Summary: This study demonstrates the potential of quantum computing in solving problems in strongly interacting relativistic quantum field theory. By performing numerical calculations on simulated quantum devices, researchers successfully determined the structure and physical properties of the light meson system, and compared the results with experimental data.
PHYSICAL REVIEW RESEARCH
(2022)
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
Physics, Nuclear
J. Chen, B. P. Kay, T. L. Tang, I. A. Tolstukhin, C. R. Hoffman, H. Li, P. Yin, X. Zhao, P. Maris, J. P. Vary, G. Li, J. L. Lou, M. L. Avila, Y. Ayyad, S. Bennett, D. Bazin, J. A. Clark, S. J. Freeman, H. Jayatissa, C. Muller-Gatermann, A. Munoz-Ramos, D. Santiago-Gonzalez, D. K. Sharp, A. H. Wuosmaa, C. X. Yuan
Summary: In this study, deuteron elastic scattering and inelastic scattering reactions to the first excited state of 15C were investigated using a radioactive beam of 15C in inverse kinematics. The analysis of the experimental data and comparison with theoretical calculations provided insights into the structure of 15C.
Article
Physics, Nuclear
Weijie Du, Soham Pal, Mamoon Sharaf, Peng Yin, Shiplu Sarker, Andrey M. Shirokov, James P. Vary
Summary: We calculate the radiative capture cross section of the np -> d gamma reaction at low energies using different orders of chiral effective field theory. The results show a converging pattern with increasing order of nucleon-nucleon interaction and weak regulator dependence. By quantifying the uncertainties due to chiral-order truncation, we obtain accurate cross-section results up to N2LO, which compare well with experiments and other theoretical predictions.
