Limits to scale invariance in alluvial rivers
Sign Up to like & getrecommendations! Published in 2020 at "Earth Surface Processes and Landforms"
DOI: 10.1002/esp.5006
Abstract: Assumptions about fluvial processes and process–form relations are made in general models and in many site‐specific applications. Many standard assumptions about reach‐scale flow resistance, bed‐material entrainment thresholds and transport rates, and downstream hydraulic geometry involve… read more here.
Keywords: geometry; scale invariance; invariance alluvial; alluvial rivers ... See more keywords
Gravity, scale invariance and the hierarchy problem
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2018)024
Abstract: A bstractCombining the quantum scale invariance with the absence of new degrees of freedom above the electroweak scale leads to stability of the latter against perturbative quantum corrections. Nevertheless, the hierarchy between the weak and… read more here.
Keywords: scale invariance; hierarchy; physics; gravity ... See more keywords
Scale Invariance of Power Spectrum in Sediment Transport Mechanics
Sign Up to like & getrecommendations! Published in 2018 at "National Academy Science Letters"
DOI: 10.1007/s40009-018-0616-3
Abstract: Flume experiments were carried over a curvilinear mobile sand bed and over a vegetated sand bed to scale the power spectra variation in the longitudinal velocity spectrum of turbulence flow. Instantaneous three dimensional velocities were… read more here.
Keywords: invariance power; scale invariance; mechanics; spectrum ... See more keywords
An alternative method to test scale invariance
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DOI: 10.1016/j.mex.2020.100875
Abstract: We introduce an alternative method that is simple and can be used to test scale invariance or self-similarity in any types of data, irrespective of their distributions. Our method is based on estimating the Lorenz… read more here.
Keywords: test scale; scale invariance; alternative method; test ... See more keywords
Scale invariance in finite Reynolds number homogeneous isotropic turbulence
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.28
Abstract: The problem of homogeneous isotropic turbulence (HIT) is revisited within the analytical framework of the Navier–Stokes equations, with a view to assessing rigorously the consequences of the scale invariance (an exact property of the Navier–Stokes… read more here.
Keywords: stix; reynolds number; unicode stix; scale invariance ... See more keywords
Quantifying gravity wave forcing using scale invariance
Sign Up to like & getrecommendations! Published in 2019 at "Nature Communications"
DOI: 10.1038/s41467-019-10527-z
Abstract: Despite the increasing resolution, forcing on the mean circulation by resolved waves in general circulation models is not yet converging. Parameterization of the forcing remains a major source of model uncertainty. This study examines the… read more here.
Keywords: small scale; wave forcing; quantifying gravity; scale invariance ... See more keywords
Scale invariance in a nonvibrating magnetic granular system
Sign Up to like & getrecommendations! Published in 2020 at "Scientific Reports"
DOI: 10.1038/s41598-020-68345-z
Abstract: A nonvibrating magnetic granular system is studied by using a time series approach. The system consists of steel balls confined inside a circular wall that surrounds a glass plate. Kinetic energy is provided to the… read more here.
Keywords: system; scale invariance; time; nonvibrating magnetic ... See more keywords
Chiral symmetry and scale invariance breaking in spin chains
Sign Up to like & getrecommendations! Published in 2020 at "AIP Advances"
DOI: 10.1063/1.5130190
Abstract: The effects of the Dzyaloshinsky-Moriya interaction on finite size one-dimensional (1D) magnetic chains are investigated as a function of their length. The magnetic configuration the system adopts for varying boundary conditions are explored analytically, which… read more here.
Keywords: symmetry scale; chiral symmetry; invariance breaking; scale invariance ... See more keywords
True scale-free networks hidden by finite size effects
Sign Up to like & getrecommendations! Published in 2020 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2013825118
Abstract: Significance The generalized scale invariance of complex networks, whose trademark feature is the power law distributions of key structural properties like node degree, has recently been questioned on the basis of statistical testing of samples… read more here.
Keywords: finite size; scale free; size effects; scale invariance ... See more keywords
Emergent scale invariance of nonclassical plasmons in graphene nanoribbons
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.155412
Abstract: Using a nearest-neighbor tight-binding model we investigate quantum effects of plasmons on few-nanometer wide graphene nanoribbons, both for zigzag and armchair edge terminations. With insight from the Dirac description we find an emerging scale-invariant behavior… read more here.
Keywords: scale invariance; graphene nanoribbons; emergent scale; nonclassical plasmons ... See more keywords
Conformal invariance from scale invariance in nonlinear sigma models
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.065018
Abstract: There exists a certain argument that in even dimensions, scale invariant quantum field theories are conformal invariant. We may try to extend the argument in $2n + \epsilon$ dimensions, but the naive extension has a… read more here.
Keywords: invariance; conformal invariance; sigma models; invariance scale ... See more keywords