Scalar field configurations supported by charged compact reflecting stars in a curved spacetime
Physics Letters B, 2018 We study the system of static scalar fields coupled to charged compact reflecting stars through both analytical and numerical methods. We enclose the star in a box and our solutions are related to cases without box boundaries when putting the box far ...
Yan Peng
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On the Numerical Range and Numerical Radius of the Volterra Operator
Известия Иркутского государственного университета: Серия "Математика", 2018 In this paper, we investigated the numerical range and the numerical radius of the classical Volterra operator on the complex space $L^2[0,1]$. In particular, we determined the numerical range, the numerical radius of real and imaginary part of the ...
L. Khadkhuu, D. Tsedenbayar
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Mass-radius relation of Newtonian self-gravitating Bose-Einstein condensates with short-range interactions. II. Numerical results [PDF]
Physical Review D, 2011 We develop the suggestion that dark matter could be a Bose-Einstein condensate. We determine the mass-radius relation of a Newtonian self-gravitating Bose-Einstein condensate with short-range interactions described by the Gross-Pitaevskii-Poisson system.
Chavanis, P. H., Delfini, L.
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Journal of MathematicsIn this paper, we delve into the intricate connections between the numerical ranges of specific operators and their transformations using a convex function. Furthermore, we derive inequalities related to the numerical radius.
Feras Bani-Ahmad, M. H. M. Rashid
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Evaluation of the Acoustic Performance of Porous Materials Lined Ducts with Geometric Discontinuities [PDF]
Archives of Acoustics, 2022 Duct silencers provide effective noise reduction for heating, ventilation and air conditioning systems. These silencers can achieve an excellent sound attenuation through the attributes of their design.
Dhouha Tounsi +5 more
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Research on Gas Drainage Laws of SRV-fractured Horizontal Wells in Different Types of Tight Gas Reservoirs [PDF]
E3S Web of Conferences, 2022 Horizontal well and large-scale hydraulic fracturing are the main technical means for tight gas development at present. However, tight gas reservoirs are characterized by strong heterogeneity, and different types of gas Wells have different production ...
Li Xucheng +4 more
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Some Results on Polynomial Numerical Hulls of Perturbed Matrices [PDF]
Sahand Communications in Mathematical Analysis, 2019 In this paper, the behavior of the pseudopolynomial numerical hull of a square complex matrix with respect to structured perturbations and its radius is investigated.
Madjid Khakshour, Gholamreza Aghamollaei
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The Effect of Hole Radius on The Properties of Large Pitch Photonic Crystal Fiber [PDF]
مجلة التربية والعلم, 2011 Three proposals of large pitch (Λ=5µm) photonic crystal fibers (PCFs) are studied. The effect of air hole radius on the properties of the fundamental mode of these fibers are considered.
Rasha Abdulaziz Faris Abdulghafor Ibrahim Abdullah
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Research on the prediction of liquid CO2 phase transition cracking radius in coal seams
Gong-kuang zidonghua, 2023 Predicting cracking radius is a prerequisite for determining the holes spacing of gas extraction technology by liquid CO2 phase transition cracking and permeability improvement, which directly affects the gas extraction effect.
WANG Changlu +4 more
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Three-dimensional solitons in Rydberg-dressed cold atomic gases with spin–orbit coupling
Scientific Reports, 2023 We present numerical results for three-dimensional (3D) solitons with symmetries of the semi-vortex (SV) and mixed-mode (MM) types, which can be created in spinor Bose–Einstein condensates of Rydberg atoms under the action of the spin–orbit coupling (SOC)
Yuan Zhao +7 more
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