Article
Astronomy & Astrophysics
Heng Guo, Lang -Lang Wang, Chun -E Fu, Qun-Ying Xie
Summary: In this paper, the solutions of the pure geometric thick f(R) branes in the most general form f(R) = ∑i=1(n) a(i)R(i) + ? are investigated. The analytical thick brane solutions can be calculated for certain values of n, and the solutions for n = 3, n = 4, and n = 10 are presented. These solutions are stable against linear tensor perturbations. The zero modes of gravity and scalar field can naturally be localized on thick f(R) branes. By introducing the coupling with scalar curvature R of spacetime, the zero modes of a vector field and left-chiral fermion can also be localized on thick f(R) branes, and the massive resonant modes can be quasilocalized on the brane with large coupling coefficients.
Article
Physics, Multidisciplinary
Xiang-Nan Zhou, Wei-Qi Guo
Summary: This paper investigates the localization of a five-dimensional gravitino field on a thick brane with non-minimal coupling. By choosing an appropriate gauge condition, the equations for the Kaluza-Klein (KK) modes of gravitino are obtained. Compared to the case without non-minimal coupling, the inclusion of non-minimal coupling allows for the localization of both the zero mode and massive KK modes of a five-dimensional free massless gravitino field on the brane. The study also finds that the non-minimal coupling modifies the mass spectrum of the KK modes and offers more possibilities for localization.
Article
Physics, Particles & Fields
Marzieh Peyravi, Nematollah Riazi, Francisco S. N. Lobo
Summary: This work presents novel topological brane solutions by introducing new parameters and a symmetry breaking term, leading to distinct vacuum structures in the φ and ψ fields, departing from the traditional φ 4 theory. Detailed analysis of superpotentials, warp factors, and other scalar quantities along with the Einstein tensor components helps in understanding the behavior of the brane structure.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Qin Tan, Wen-Di Guo, Yu-Xiao Liu
Summary: This study investigates the quasinormal modes of a thick brane system, revealing a set of discrete quasinormal modes that reflect the structural characteristics of the thick brane. These modes appear as decaying massive gravitons for a brane observer.
Article
Physics, Particles & Fields
F. M. Belchior, A. R. P. Moreira, R. V. Maluf, C. A. S. Almeida
Summary: In this paper, we investigate the influence of torsion scalar T and boundary term B on the confinement of both the gauge vector and Kalb-Ramond fields in modified teleparallel gravity. We propose a Stueckelberg-like geometrical coupling that non-minimally couples the fields to the torsion scalar and boundary term. We use the first-order formalism and two kinds of superpotential to set up our braneworld models. The geometrical coupling is used to produce a localized zero mode, and we analyze the massive spectrum for both fields to obtain possible resonant massive modes.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Multidisciplinary
A. R. P. Moreira, F. M. Belchior, R. V. Maluf, C. A. S. Almeida
Summary: This paper investigates the influence of torsion on bulk fields in a thick brane with codimension two in f(T) modified teleparallel gravity. The localization of gauge field zero mode is supported by the brane without the need for an extra coupling. However, Kalb-Ramond and fermionic fields require appropriate couplings. Therefore, a geometrical coupling based on results in 5D thick brane in modified teleparallel gravities is proposed. The Kalb-Ramond field is coupled to torsion scalar T through a gauge-invariant interaction, and for fermionic fields, the Dirac fermions and gravitino are studied with a derivative geometrical coupling. Massive and resonant modes are obtained for all fields using a Schodinger-like approach.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Multidisciplinary
Yunzhu Wei, Songbai Chen, Jiliang Jing
Summary: We have studied the equipotential surfaces of a thick accretion disk around a Casadio-Fabbri-Mazzacurati compact object in the brane-world scenario. Results show that the size of the accretion disk decreases and the Roche lobe size increases with the increase in the parameterized post-Newtonian (PPN) parameter. The pressure gradient in the disk also decreases with the PPN parameter.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2023)
Article
Mathematics, Applied
Calin Iulian Martin, Biswajit Basu
Summary: This study investigates three and four-wave resonances of capillary-gravity water waves with piecewise constant vorticity in the flow, revealing that a disentanglement occurs under specific conditions, leading to non-interference between waves.
NONLINEAR ANALYSIS-REAL WORLD APPLICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Tailin Zhang, Xingyuan Zhang, Yun Shen, Yinsheng Xu, Laibin Luo, Jianqiang Gu, Sijia Yang, Jie Xu, Xiaohua Deng
Summary: In this study, a terahertz BIC metasurface structure composed of metal split ring resonators (SRRs) was designed. The leakage process of BIC states to the far field was studied by changing the gap width of SRR based on the symmetric protection principle of superlattice mode. By introducing multiple SRRs and changing their arrangement, three superlattice modes and BIC states were obtained. Experimental observations confirmed the leakage of BIC states into the far field, forming observable quasi-BIC patterns. A feasible method for flexible design and implementation of BIC was verified.
Article
Multidisciplinary Sciences
Ziqi Chen, Chun'e Fu, Xiaoyu Zhang, Chen Yang, Li Zhao
Summary: This paper investigates gauge invariance in a bulk massless q-form field on a p-brane with codimension two, utilizing a general Kaluza-Klein (KK) decomposition. The KK decomposition analysis reveals four distinct KK modes and eight Schrodinger-like equations. The KK decomposition process also gives rise to four dualities on the p-brane, playing a significant role in maintaining the equivalence of bulk dual fields during dimensional reduction.
Review
Chemistry, Physical
Lars Hahn, Konrad Zierold, Anke Golla, Danny Friese, Steffen Rittner
Summary: Fibre-reinforced composites (FRCs) have been widely used in aerospace, automotive, plant engineering, shipbuilding, and construction industries. Their technical advantages over metallic materials have been extensively researched and proven. The key to further industrial application of FRCs lies in maximizing resource and cost efficiency in the production and processing of textile reinforcement materials.
Article
Optics
Peng Chen, Bo Fang, Jianmin Li, Zhen Wang, Jinhui Cai, Lan Ke, Wenkang Huang, Yanyan Dong, Chenxia Li, Xufeng Jing
Summary: A transmissive encoding metasurface based on the geometric phase principle is proposed, which realizes multi-angle control of multi-focal in free space through complex coding and addition operations, providing a new idea for future multifocal metalens design.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
I. Martinez-Berumen, W. A. Coish, T. Pereg-Barnea
Summary: We studied the coupling between a system of two-dimensional Dirac electrons on a three-dimensional topological insulator and an array of localized spins. The spins form a ferromagnetic order with spin-wave excitations. The Dirac electrons couple to the spins through a spin-dependent effective Zeeman field, leading to a gap in the electronic spectrum. Flipping a spin creates a domain with opposite Dirac mass, resulting in the appearance of an electronic bound state on the domain wall. This bound state, called Jackiw-Rebbi-Magnon (JRM), binds to delocalized spin waves and can be observed in the dynamic spin susceptibility. When the sample is tunnel coupled to an electronic reservoir, magnon-JRM polaritons are formed when a magnon hybridizes with a JRM. A quantum phase transition occurs when the energy of the magnon-JRM polariton falls below that of the fully polarized ferromagnetic ground state.
Article
Mathematics, Interdisciplinary Applications
M. H. Heydari, M. Razzaghi
Summary: This study introduces a novel category of fractional optimal control problems by utilizing piecewise fractional derivatives based on Caputo fractional derivative. It considers using piecewise Chebyshev cardinal functions as an appropriate family of basis functions to construct a numerical method for solving such problems. The proposed technique transforms the solution of these problems into finding the solution of algebraic systems of equations by approximating the state and control variables using the mentioned basis functions, with the accuracy of the approach investigated through solving examples.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Optics
Lijun Yuan, Ya Yan Lu
Summary: The study investigates the stability of bound states in the continuum (BICs) in optical waveguides and the influence of structural symmetry on them. Results show that a typical BIC with left-right mirror symmetry and a single lateral leakage channel is robust against structural perturbations preserving the symmetry.
Article
Physics, Nuclear
Xiang-Nan Zhou, Yun-Zhi Du, Xin-Yuan Ma, Zhen-Hua Zhao
Summary: This study investigates the localization of the five-dimensional Elko spinor zero mode on branes using two different localization mechanisms. The results show that both mechanisms can achieve localization, and the forms of the scalar coupling function in both mechanisms have similar properties.
Article
Engineering, Multidisciplinary
Dong-Sheng Yang, Jing Ling, Wei Gong, Hong-Ying Wang, Zhen-Hua Zhao
Summary: This study presents a new boundary element-free Galerkin method, called the virtual boundary element-free Galerkin method (VBEFGM), for solving 2D inhomogeneous heat conduction problems. The proposed method combines the advantages of meshfree method, Galerkin method, and boundary element method. It offers a simple and easily programmable calculation scheme, and its accuracy and stability are verified through various numerical examples.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Environmental Sciences
Cong Han, Jiutan Liu, Zongjun Gao, Yuan Xu, Yuqi Zhang, Zheng Han, Zhenhua Zhao, Zhenjiang Luo
Summary: The study found that the water chemistry characteristics of groundwater in high-fluorine areas are influenced by Na%, and silicate hydrolysis can promote fluoride release. The quality of high-fluoride groundwater is poor, with higher hardness and total dissolved solids in non-HNA areas. The key factors controlling high-fluoride groundwater differ, highlighting the need for strengthened management practices.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Physics, Particles & Fields
Chun-E Fu, Zhen-hua Zhao, Ming-Hui Sun
Summary: This study investigates the gauge invariance and localization of vector KK modes for a bulk U(1) gauge field on a brane with one extra dimension. It is demonstrated that the effective action of KK modes on the brane can be formulated in a gauge-invariant form for a localization mechanism with a gauge-invariant bulk action. However, only the massive vector KK modes and their accompanying scalar ones can be localized on the brane, preserving the gauge invariance of the massive vector field. On the other hand, for a localization mechanism with a broken gauge-invariant bulk action, it is impossible to rebuild gauge invariance on the brane.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Engineering, Electrical & Electronic
Qian-Qian Li, Hao Pan, Zhen-Hua Zhao, Hai-Feng Zhang
Summary: The proposed simple broadband circularly polarized patch antenna design utilizes a 2x2 array and sequential-phase feed network to improve performance, while discussing the importance of height and slot design in reducing coupling. Measured results show significant impedance and axial ratio bandwidth improvements, with a peak gain of 7.13 dBi at 2.7 GHz.
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS
(2022)
Article
Biochemical Research Methods
Guangbao Zhang, Xiaohui Yang, Zhenhua Zhao, Tao Xu, Xiaoqiang Jia
Summary: In this study, three engineered Escherichia coli BL21 strains were constructed with different metabolic modules to form an artificial consortium for PAH degradation. By optimizing degradation conditions and supplementing engineered strains in batches, efficient phenanthrene degradation was achieved.
ACS SYNTHETIC BIOLOGY
(2022)
Article
Engineering, Aerospace
Daochun Yu, Haitao Li, Baoquan Li, Mingyu Ge, Youli Tuo, Xiaobo Li, Wangchen Xue, Yaning Liu
Summary: We propose a new method for retrieving the atmospheric number density profile in the lower thermosphere based on X-ray Earth occultation. The results show that the retrieved atmospheric density using this new method is lower than model predictions and consistent with previous X-ray occultation results. However, the accuracy of the retrieved results decreases with increasing altitude.
ADVANCES IN SPACE RESEARCH
(2022)
Article
Astronomy & Astrophysics
Jiang-Hui Ji, Hai-Tao Li, Jun-Bo Zhang, Liang Fang, Dong Li, Su Wang, Yang Cao, Lei Deng, Bao-Quan Li, Hao Xian, Xiao-Dong Gao, Ang Zhang, Fei Li, Jia-Cheng Liu, Zhao-Xiang Qi, Sheng Jin, Ya-Ning Liu, Guo Chen, Ming-Tao Li, Yao Dong, Zi Zhu
Summary: The Closeby Habitable Exoplanet Survey (CHES) mission aims to discover habitable-zone Earth-like planets near solar-type stars within 10 light years of our solar system through microarcsecond relative astrometry. It also seeks to conduct a comprehensive survey and characterize nearby planetary systems. The mission will provide direct measurements of true masses and inclinations of Earth Twins and super-Earths orbiting nearby stars, enhancing our understanding of the formation of diverse planetary systems and the evolution of our own solar system.
RESEARCH IN ASTRONOMY AND ASTROPHYSICS
(2022)
Article
Energy & Fuels
Zheng Liu, Shaohang Chen, Benqin Jing, Chunshan Yang, Jianbo Ji, Zhenhua Zhao
Summary: In this study, a novel SOC estimation strategy based on a simplified fractional variable-order equivalent circuit model (FVOECM) and adaptive Kalman filter algorithm is proposed. The updated order effectively tracks the variations of the battery model, resulting in improved SOC estimation accuracy.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Water Resources
Xing Deng, Liting Xing, Miao Yu, Zhenhua Zhao, Changsuo Li, Qingwei Su
Summary: Due to the multi-scale nature and complexity of the flow field, hydrogeologists have always struggled to accurately understand the water cycle characteristics of karst water flow systems. In this study, the ISM model and IsoSource model were used to determine the spring age and mixing ratio of spring recharge sources in Jinan. Based on multiple factors, the hierarchical groundwater flow system in karst areas was identified. The research findings shed light on the analysis of the hierarchical cycle and evolution of karst water.
WATER PRACTICE AND TECHNOLOGY
(2022)
Review
Multidisciplinary Sciences
Zhiqiang Que, Cuifeng Zheng, Zhenhua Zhao, Yanhong Weng, Zhibao Zhu, Yuqi Zeng, Qinyong Ye, Fabin Lin, Guoen Cai
Summary: Clonazepam and melatonin are effective medications for RBD, with clonazepam improving sleep stage and melatonin improving sleep efficiency and quality. Ramelteon can reduce RWA, and pramipexole can increase total sleep time and reduce PLMS index. Pramipexole also has different effects on different types of RBD.
Proceedings Paper
Engineering, Industrial
Jibo Liu, Bing Hu, Zhenhua Zhao
Summary: By analyzing the main circuit topology and control strategy of the three-phase inverter power supply, this paper presents a double closed-loop control strategy for voltage and current of the three-phase inverter power supply based on the resonant regulator. The outer voltage loop ensures stable output alternating voltage, while the inner current loop limits the current amplitude and improves the system's response speed. The control parameters of the controller are obtained through theoretical analysis to achieve accurate control of the power supply's output voltage. The effectiveness of the control strategy is verified through simulation and experiment.
2022 IEEE 17TH CONFERENCE ON INDUSTRIAL ELECTRONICS AND APPLICATIONS (ICIEA)
(2022)
Article
Environmental Sciences
Quanlin Feng, Hongjie Sun, Yang Wang, Zhenhua Zhao, Kai Liu, Zhihui Wang, Jinkai Yan
Summary: One of the primary concerns for sustainable and safety development of urban underground space is to identify the key restrictive factors and propose corresponding methods to overcome them. This study presents a four-stage evaluation framework using a fuzzy mathematics comprehensive evaluation method, which is applied in Jinan Pilot Zone. The framework includes identifying major indicators and restrictive factors, collecting data, evaluating suitability, and providing management suggestions. The study suggests utilizing existing facilities for exploration and tourism projects to develop the underground space, which could become a highlight of the Pilot Zone.
REVISTA INTERNACIONAL DE CONTAMINACION AMBIENTAL
(2022)
Article
Meteorology & Atmospheric Sciences
Daochun Yu, Haitao Li, Baoquan Li, Mingyu Ge, Youli Tuo, Xiaobo Li, Wangchen Xue, Yaning Liu, Aoying Wang, Yajun Zhu, Bingxian Luo
Summary: This study investigates the X-ray Earth occultation of the Crab Nebula using the Hard X-ray Modulation Telescope. A forward model for the XEO light curve is established and a Bayesian data analysis method is developed for the density retrieval. The retrieved density profiles are consistent with other models and previous retrieval results.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2022)
Correction
Water Resources
Miao Yu, Xuerui Xing, Liting Xing, Zhenhua Zhao, Changsuo Li
WATER PRACTICE AND TECHNOLOGY
(2022)
