Results 41 to 50 of about 84,250 (267)

Scalar hairy black holes in Einstein-Maxwell-conformally coupled scalar theory

open access: yesPhysics Letters B, 2020
We obtain scalar hairy black holes from Einstein-Maxwell-conformally coupled scalar (EMCS) theory with the scalar coupling parameter α to the Maxwell term.
De-Cheng Zou, Yun Soo Myung
doaj   +1 more source

Note on scalar–graviton and scalar–photon–graviton amplitudes

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this short note, we propose an algorithm based on the expansions of amplitudes, the dimensional reduction technique and the approach by differential operators, to calculate the tree level scalar–graviton amplitudes with two massive scalars and the ...
Kang Zhou, Guo-Jun Zhou
doaj   +1 more source

Piecewise Analytical Approximation Methods for Initial-Value Problems of Nonlinear Ordinary Differential Equations

open access: yesMathematics
Piecewise analytical solutions to scalar, nonlinear, first-order, ordinary differential equations based on the second-order Taylor series expansion of their right-hand sides that result in Riccati’s equations are presented.
Juan I. Ramos
doaj   +1 more source

Viable constraint on scalar field in scalar–tensor theory [PDF]

open access: yesClassical and Quantum Gravity, 2020
Abstract The scalar–tensor theory can be formulated in both Jordan and Einstein frames, which are conformally related together with a redefinition of the scalar field. As the solution to the equation of the scalar field in the Jordan frame does not have the one-to-one correspondence with that in the Einstein frame,
Chao-Qiang Geng   +2 more
openaire   +2 more sources

Study on fast fractal image compression algorithm based on centroid radius

open access: yesSystems Science & Control Engineering
To achieve real-time transmission of image information under limited network bandwidth conditions, we propose a fast fractal image compression algorithm based on centroid radius.
Li-Feng Li   +3 more
doaj   +1 more source

Long-Range Scalar Forces in Five-Dimensional General Relativity

open access: yesAdvances in Mathematical Physics, 2020
We present new results regarding the long-range scalar field that emerges from the classical Kaluza unification of general relativity and electromagnetism.
L. L. Williams
doaj   +1 more source

Health‐Related Social Needs in Children With Sickle Cell Disease Are Associated With Worse Health‐Related Quality of Life

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell disease (SCD) face multiple acute and chronic medical complications that may impact their quality of life as reported by patients themselves. Health‐related social needs (HRSNs), such as food and housing insecurity, are common in people with SCD, but the association between HRSNs and patient‐reported ...
Sarah J. Marks   +5 more
wiley   +1 more source

Piecewise-Analytical Approximation Methods for Initial-Value Problems of Nonlinear, Ordinary Differential Equations: Part 2

open access: yesMathematics
A variety of methods that provide approximate piecewise- analytical solutions to initial-value problems governed by scalar, nonlinear, first-order, ordinary differential equations is presented.
Juan I. Ramos
doaj   +1 more source

The emergence of scalar meanings [PDF]

open access: yesFrontiers in Psychology, 2015
This paper analyzes the emergence of scalar additive meanings. We show that in Basque the same particle ere can obtain both the "simple additive" reading (akin to English too) and the "scalar additive" reading (akin to English even) but we argue that we do not have to distinguish two types of ere.
Etxeberria, Urtzi, Irurtzun, Aritz
openaire   +4 more sources

Scalarization of horizonless reflecting stars: Neutral scalar fields non-minimally coupled to Maxwell fields

open access: yesPhysics Letters B, 2020
We analyze condensation behaviors of neutral scalar fields outside horizonless reflecting stars in the Einstein-Maxwell-scalar gravity. It was known that minimally coupled neutral scalar fields cannot exist outside horizonless reflecting stars.
Yan Peng
doaj   +1 more source

Home - About - Disclaimer - Privacy