Search results for " Scale effects"

showing 2 items of 2 documents

Planck-scale effects on WIMP dark matter

2014

There exists a widely known conjecture that gravitational effects violate global symmetries. We study the effect of global-symmetry violating higher-dimension operators induced by Planck-scale physics on the properties of WIMP dark matter. Using an effective description, we show that the lifetime of the WIMP dark matter candidate can satisfy cosmological bounds under reasonable assumptions regarding the strength of the dimension-five operators. On the other hand, the indirect WIMP dark matter detection signal is significantly enhanced due to new decay channels.

High Energy Physics - TheoryParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)WIMPMaterials Science (miscellaneous)Scalar field dark matterBiophysicsFOS: Physical sciencesGeneral Physics and AstronomyAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesdark matterHigh Energy Physics - Phenomenology (hep-ph)WIMP0103 physical sciencesWarm dark matterindirect detectionparticle physicsPhysical and Theoretical Chemistry010306 general physicsLight dark matterMathematical PhysicsDark Matter PhenomenologyPhysics010308 nuclear & particles physicsHot dark matterPhysicsWIMP dark matterFísicalcsh:QC1-999decaying dark matterHigh Energy Physics - PhenomenologyHigh Energy Physics - Theory (hep-th)astroparticle physicsWeakly interacting massive particlesPlanck scale effectsMixed dark matterdirect detectionHigh Energy Physics::Experimentlcsh:PhysicsDark fluidAstrophysics - Cosmology and Nongalactic AstrophysicsFrontiers in Physics
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Scale effects on plot runoff and soil erosion in a mediterranean environment

2017

Explaining scale effects for runoff and erosion improves our understanding of hydrological and erosion processes. In this investigation, plot-scale effects on event runoff per unit area, Qe, sediment concentration, Ce, and soil loss per unit area, SLe, were checked at the Sparacia (Italy) site. Similar information on the scale effects was obtained with different dependent variables, i.e., individual values of Qe, Ce, and SLe for each plot or the mean of their replicated values, and scale indicators, i.e., plot length, l, or plot area, A. The most common result, occurring for 57 to 62% of the events depending on the considered variable, was the lack of any scale effect. When scale effects we…

Mediterranean climateHydrologyDependent variables Erosion process Mediterranean environment Rainfall characteristics Scale effects Scaling exponent. Sediment concentration Soil erosion0208 environmental biotechnologySoil ScienceEnvironmental scienceScale effects02 engineering and technologySurface runoffPlot (graphics)020801 environmental engineering
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