Article
Astronomy & Astrophysics
Tanmay Vachaspati, Alexander Vilenkin
Summary: We estimate the chirality of the cosmological plasma due to parity violating decays of Standard Model particles, but find that the contribution to the cosmological magnetic field via the chiral-magnetic effect is too small to be significant.
Article
Computer Science, Software Engineering
Alexandre Binninger, Olga Sorkine-Hornung
Summary: This paper proposes a method for constructing planar curves using piecewise clothoids and straight lines, which can intuitively interpolate a given sequence of control points. The method has several advantages over previous approaches, such as C-2 continuity, fast evaluation for interactive modeling, and consistent curvature at control points.
COMPUTER GRAPHICS FORUM
(2022)
Article
Astronomy & Astrophysics
Bum-Hoon Lee, Wonwoo Lee, Eoin O. Colgain, M. M. Sheikh-Jabbari, Somyadip Thakur
Summary: Local determinations of H-0 fall within a range of approximately 70 km/s/Mpc (TRGB) to 76 km/s/Mpc (Tully-Fisher). In contrast, BAO data calibrated in an early Lambda CDM universe indicate H-0 of approximately 67.5 km/s/Mpc, consistent with Planck-Lambda CDM. By studying different dark energy equations of state and mock BAO data, it is shown that H-0 can increase under certain conditions. Specific models such as Brans-Dicke/f(R) and Kinetic Gravity Braiding within the Horndeski class can also lead to modest increases in H-0.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Mathematics, Applied
Gang Hu, Junli Wu, Xiaofeng Wang
Summary: The paper presents a class of methods to construct local controlled developable H-Bezier surfaces through a given characteristic curve, introducing generalized cubic H-Bezier basis functions and deriving sufficient and necessary conditions for the interpolating developable H-Bezier surface to be a cylinder or a cone. Representative examples are provided to illustrate the convenience and efficiency of the presented methods.
COMPUTATIONAL & APPLIED MATHEMATICS
(2021)
Article
Astronomy & Astrophysics
Henrique Rubira, Rodrigo Voivodic
Summary: A logarithm transformation of the matter overdensity field allows information from higher-order functions to be transferred to the power spectrum, improving computational efficiency and accuracy. Studies show that the large-scale behavior of the log-transformed field can be represented by a small number of free parameters, and the non-linear transformation enables access to information on smaller scales.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Aaron Park, Kie Sang Jeong, Su Houng Lee
Summary: Based on the constituent quark model and quark dynamics with confinement, this study analyzes the appearance of quarkyonic modes in the phase space of baryons as density increases. It is found that as baryon density increases, the initial quark mode involves dou thorn quarks from neutron (proton) and leaves the most attractive (ud) diquark intact.
Article
Astronomy & Astrophysics
Aaron Park, Su Houng Lee
Summary: In this study, we investigate the color-spin interaction energy of a quark, diquark, and baryon with their surrounding baryons and/or quark matter. We categorize all possible flavor and spin states of the resulting multiquark configuration in both flavor SU(2) and SU(3) symmetric cases. The findings suggest that the interaction energy is lowest for a single surrounding baryon for the baryon, but lowest for multiple baryons or a quark gas for the quark. The study also provides a quark model basis for the quarkyoniclike phase in dense matter.
Article
Astronomy & Astrophysics
Kohei Kamada, Fumio Uchida, Jun'ichi Yokoyama
Summary: The decay of hypermagnetic helicity at electroweak symmetry breaking may have produced baryon asymmetry, however, fully helical magnetic field may not be strong enough to explain the origin of intergalactic magnetic field; the combination of helical and nonhelical primordial magnetic fields may explain both, but is ruled out by the constraint on amplitude of baryon isocurvature perturbations.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Chemistry, Physical
Demelza Wright, Sara Sangtarash, Niclas S. Mueller, Qianqi Lin, Hatef Sadeghi, Jeremy J. Baumberg
Summary: This study demonstrates that molecules containing vibrational Stark shift reporters can be used to measure DC electric fields in situ. However, it is found that the uniform field DFT calculations cannot accurately model the behavior of the three strongest vibrational modes in molecules forming a monolayer on an electrode. It is shown that the measured Stark shifts are explained by partial electrical double-layer penetration into the molecular layer, which is sensitive to the local environment.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Automation & Control Systems
Tengyuan Liang, Benjamin Recht
Summary: This paper provides elementary analyses of the regret and generalization of minimum-norm interpolating classifiers (MNIC). The mistake bound and regularized variant for MNIC are derived using elementary properties of matrix inverses. Under the assumption of data being independently and identically distributed, it is shown that MNIC generalizes at a rate proportional to the norm of the interpolating solution and inversely proportional to the number of data points. Several plausible generative models are derived for the interpolating classifier, and the conditions under which MNIC generalizes with a fast rate are also discussed.
JOURNAL OF MACHINE LEARNING RESEARCH
(2023)
Article
Astronomy & Astrophysics
June-Young Kim
Summary: In this letter, the Lorentz structures and transition matrix elements of the vector current and symmetric energy-momentum tensor current are investigated. The study reveals the existence of five independent conserved and four independent non-conserved energy-momentum tensor form factors for the symmetric energy-momentum tensor current.
Article
Mathematics
Ruochuan Liu, Guozhen Wang
Summary: We present a new approach to determine the structure of topological cyclic homology using a descent spectral sequence. We perform the computation for a p-adic local field with F-p-coefficients, including the case of p = 2, which has previously only been covered by motivic methods in the totally unramified case.
INVENTIONES MATHEMATICAE
(2022)
Article
Mathematics, Applied
Alberto Viscardi
Summary: This study examines the non-stepwise interpolation property and memory loss phenomenon of the recently introduced dual interpolating subdivision schemes. It identifies new differences between schemes with odd and even dilation factors, showing that odd dilation factors have a 2-step interpolation property, while even dilation factors result in completely non-stepwise interpolation processes. These findings are utilized to develop an optimized non-uniform level dependent implementation of dual interpolating schemes to overcome the computational drawback caused by memory loss.
APPLIED MATHEMATICS AND COMPUTATION
(2023)
Article
Chemistry, Physical
Eric D. Walter, Cigdem Capan, Amanda J. Casella, Jennifer C. Carter, Bruce K. McNamara, Chuck Z. Soderquist, Sergey Sinkov, Richard A. Clark, Forrest D. Heller, Lucas E. Sweet, Jordan F. Corbey, Herman Cho
Summary: Fluorine-19 magnetic shielding tensors have been measured in a series of actinide tetrafluorides by solid state nuclear magnetic resonance spectroscopy, revealing pronounced deviations from predictions based on localized valence electron models. This suggests that these compounds can serve as an attractive choice for a systematic study of the variation in the electronic structure across the 5f row of the Periodic Table.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
Qin Qin, Yue-Long Shen, Chao Wang, Yu-Ming Wang
Summary: For the first time, we calculated the long-distance penguin contribution to double radiative B-meson decays using the perturbative factorization theorem. The dominant penguin amplitude, numerically, is due to soft-gluon radiation off the light up-quark loop rather than the charm-loop effect. Importantly, the long-distance up-quark penguin contribution cancels out the known factorizable power correction, making B-d, B- s -> gamma gamma significant probes of physics beyond the standard model.
PHYSICAL REVIEW LETTERS
(2023)
Article
Biotechnology & Applied Microbiology
Man-Huan Xiao, Yi-Fang Lin, Peng-Peng Xie, Hua-Xing Chen, Jun-Wen Deng, Wei Zhang, Na Zhao, Chen Xie, Yu Meng, Xingguo Liu, Shi-Mei Zhuang, Ying Zhu, Jian-Hong Fang
Summary: This study reveals that downregulation of MPM is associated with increased metastasis potential and recurrence in hepatocellular carcinoma. The restoration of MPM expression inhibits migration and invasion of hepatoma cells, while silencing MPM increases their metastasis ability. MPM interacts with NDUFA7 and regulates mitochondrial complex I activity and the NAD(+)/NADH ratio. miR-17-5p binds to MPM and suppresses its expression.
Article
Physics, Multidisciplinary
Hua-Xing Chen
Summary: This paper systematically constructs all tetraquark currents with J(PC)=1(++) and investigates the decay properties of the X(3872) under different interpretations. Experimental searches for X(3872)..c0p, .cpp, and .c1pp decay processes are conducted.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Article
Physics, Multidisciplinary
Hua-Xing Chen
Summary: After examining the corresponding Feynman diagrams, specific results were obtained.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Review
Physics, Multidisciplinary
Hua-Xing Chen, Wei Chen, Xiang Liu, Yan-Rui Liu, Shi-Lin Zhu
Summary: The past decades have seen significant advancements in hadron physics, particularly in the observation of excited open heavy flavor mesons and baryons since 2017. This review provides updated information on the recent experimental and theoretical developments in this field, including the observation of unconventional heavy hadrons, tetraquark states, and hidden heavy flavor multiquark states. Additionally, the review covers progress in understanding glueballs and light hybrid mesons, which are manifestations of the non-Abelian SU(3) gauge interaction in Quantum Chromodynamics at low energies.
REPORTS ON PROGRESS IN PHYSICS
(2023)
Article
Physics, Multidisciplinary
Rui-Rui Dong, Niu Su, Hua-Xing Chen, Er-Liang Cui
Summary: We applied the QCD sum rule method to study fully strange tetraquark states with J(PC) = 2(++) systematically. Both diquark-antidiquark and mesonic-mesonic currents were constructed, and their correlation functions were calculated. Three mixing currents that were nearly non-correlated were further constructed based on the obtained results. One of the mixing currents was used to extract the mass of the lowest-lying state, which was found to be 2.03(+0.16) (-0.15) GeV. This supports the interpretation of f(2)(2010) as a fully strange tetraquark state with J(PC) = 2(++), which was observed by BESIII in the phi phi channel. We propose to confirm this state in the eta((')) eta((')) channel.
FRONTIERS IN PHYSICS
(2023)
Article
Astronomy & Astrophysics
Wen-Ying Liu, Hua-Xing Chen, En Wang
Summary: We study the hadronic molecular states with different quark contents and find possible hadronic molecular states for bc (s) over bar(q) over bar systems and bq (c) over bar(s) over bar systems, but no deeply bound poles are found in these systems.
Article
Astronomy & Astrophysics
Niu Su, Wei-Han Tan, Hua-Xing Chen, Wei Chen, Shi-Lin Zhu
Summary: The QCD sum rule method was used to study double-gluon hybrid states with quark-gluon contents q over bar qgg (q 1/4 u=d) and s over bar sgg. Twenty-eight double-gluon hybrid currents were constructed, with eleven of them found to be zero due to internal symmetries between the two gluon fields. The masses of nonvanishing currents with exotic quantum numbers JPC 1/4 1- thorn and 3- thorn were calculated to be Mjq over bar qgg;1- thorn i 1/4 4.35 thorn 0.26 and Mjs over bar sgg;3- thorn i 1/4 3.16 thorn 0.22-0.28 GeV. The decay behaviors of JPC 1/4 3- thorn states were studied, and their search in the xa1o1260 thorn =pco=00 channels in future particle experiments is proposed.
Article
Astronomy & Astrophysics
Niu Su, Hua-Xing Chen, Wei Chen, Shi-Lin Zhu
Summary: We investigate the double-gluon hybrid states composed of quark-gluon contents q over bar qgg (q = u/d) and s over bar sgg. Twelve double-gluon hybrid currents with various quantum numbers are constructed, and five of them are found to be zero due to some internal symmetries. The remaining seven currents are used for QCD sum rule analyses. In particular, the masses of the double-gluon hybrid states with exotic quantum number JPC = 2+- are calculated to be Mlq over bar qgg;2+-) = 2.26+0.20 -0.25 GeV and Mls over bar sgg;2+-) = 2.38+0.19 -0.25 GeV. Their two-and three-meson decay patterns are also studied.
Article
Astronomy & Astrophysics
Hua-Xing Chen, Yi-Xin Yan, Wei Chen
Summary: In this study, we investigate the decay behaviors of bottom tetraquark and charm tetraquark states within the diquark-antidiquark picture. We calculate their relative branching ratios and propose specific channels for their searches.
Article
Astronomy & Astrophysics
Niu Su, Hua-Xing Chen
Summary: In this study, we apply the QCD sum rule method to systematically investigate fully strange tetraquark states using the diquark-antidiquark picture. Our results provide possible explanations for certain tetraquark states, as well as estimates for their masses.
Article
Physics, Particles & Fields
Rui-Rui Dong, Niu Su, Hua-Xing Chen
Summary: This study investigates the exotic hadrons with quantum numbers J(PC) = 4(+-), which cannot be reached by traditional (q) over barq mesons and qqq baryons. The researchers systematically construct various diquark antidiquark interpolating currents and use QCD sum rules to calculate correlation functions. The obtained results suggest the existence of a purely exotic hadron, a fully-strange tetraquark state of J(PC) = 4(+-), with a possible decay mode into the P-wave phi (1020)f(2)'(1525) channel.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
Hui-Min Yang, Hua-Xing Chen, Er-Liang Cui, Qiang Mao
Summary: In this study, we investigate the properties and masses of Xi(b)(6100) and its partner states using the methods of QCD sum rules and light-cone sum rules within the framework of heavy quark effective theory. Our results suggest that Xi(b)(6100) can be interpreted as a P-wave bottom baryon and has a partner state labeled as Xi(b)(1/2(-)). Additionally, lambda(b)(5912) and lambda(b)(5920) are identified as partner states of Xi(b)(6100) with J(P) = 1/2(-) and 3/2(-), respectively, and other charmed partner states are also discussed.
Article
Astronomy & Astrophysics
Dan Guo, Wei Chen, Hua-Xing Chen, Xiang Liu, Shi-Lin Zhu
Summary: Stimulated by the newly observed a(0)(1817) by the BESIII Collaboration, this study proposes a scheme for constructing the scalar meson family based on observed scalar states. Two Regge trajectories are identified and the third radial excitation is predicted. The study has important implications for understanding the properties of scalar mesons.
Article
Astronomy & Astrophysics
Hua-Xing Chen
Summary: In this study, the interpolating currents and decay constants of D(*())(D) over bar (()*()), D-(*())(K) over bar (()*()), and D-(*D-)(s)(*()-) hadronic molecular states were calculated using QCD sum rules. The relative production rates in B and B* decays and relative branching ratios were then calculated through current algebra and Fierz rearrangement.
Article
Astronomy & Astrophysics
Hua-Xing Chen, Wei Chen, Shi-Lin Zhu
Summary: This study is the first to investigate the double-gluon hybrid and its decay patterns. The mass of this hybrid is determined using the QCD sum rule method, and its decay modes are studied. It is found that the three-meson decay patterns are crucial in identifying the nature of this hybrid.
