Results 51 to 60 of about 676,684 (291)

UV-complete 4-derivative scalar field theory

open access: yesNuclear Physics B
A scalar field theory with 4-derivative kinetic terms and 4-derivative cubic and quartic couplings is presented as a proxy for quantum quadratic gravity (QQG).
Bob Holdom
doaj   +1 more source

Analysis of Flow Characteristics of Turbulent Plane Jets Based on Velocity and Scalar Fields Using DNS

open access: yesJournal of Fluid Science and Technology, 2013
Turbulent plane jets are prototypical free shear flows on which fundamental research can expand the overall understanding of turbulent flows. In this study, flow characteristics of the turbulent plane jets are studied by means of direct numerical ...
Nannan WU   +5 more
doaj   +1 more source

A Novel Method for Determining Geophone Orientations From Zero-Offset VSP Data Constrained by Scalar Field

open access: yesFrontiers in Earth Science, 2022
In vertical seismic profile (VSP) acquisition, the orientation of the three-component geophones in a borehole is often not aligned due to random rotation of the wireline receiver array.
Yuyong Yang   +6 more
doaj   +1 more source

Scalar gauge fields [PDF]

open access: yes, 2014
In this paper we give a variation of the gauge procedure which employs a scalar gauge field, $B (x)$, in addition to the usual vector gauge field, $A_\mu (x)$.
Guendelman, Eduardo I.   +1 more
core   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Horizon curvature and spacetime structure influences on black hole scalarization

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
Black hole spontaneous scalarization has been attracting more and more attention as it circumvents the well-known no-hair theorems. In this work, we study the scalarization in Einstein–scalar-Gauss–Bonnet theory with a probe scalar field in a black hole ...
Hong Guo   +3 more
doaj   +1 more source

Self-gravitating nonlinear scalar fields [PDF]

open access: yesJournal of Mathematical Physics, 1997
We investigate the Cauchy problem for the Einstein - scalar field equations in asymptotically flat spherically symmetric spacetimes, in the standard 1+3 formulation. We prove the local existence and uniqueness of solutions for initial data given on a space-like hypersurface in the Sobolev H1∩H1,4 space.
openaire   +2 more sources

Turbulent Mixing in Transverse Jets [PDF]

open access: yes, 2001
Turbulent mixing is studied in liquid-phase transverse jets. Jet-fluid concentration fields were measured using laser-induced fluorescence and digital-imaging techniques, for jets in the Reynolds number range 1000
Dimotakis, Paul, Shan, Jerry
core  

Generalized second law of thermodynamics in scalar-tensor gravity

open access: yes, 2014
Within the context of scalar-tensor gravity, we explore the generalized second law (GSL) of gravitational thermodynamics. We extend the action of ordinary scalar-tensor gravity theory to the case in which there is a non-minimal coupling between the ...
Abdolmaleki, A., Karami, K., Najafi, T.
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

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