Results 61 to 70 of about 1,062,542 (203)
Electrically-Charged Lifshitz Spacetimes, and Hyperscaling Violations [PDF]
, 2015 Electrically-charged Lifshitz spacetimes are hard to come by. In this paper, we construct a class of such solutions in five dimensional Einstein gravity coupled to Maxwell and $SU(2)$ Yang-Mills fields. The solutions are electrically-charged under the Maxwell field, whose equation is sourced by the Yang-Mills instanton(-like) configuration living in ...
arxiv +1 more source
Unification of Gravity and Yang-Mills Theory in (2+1)-Dimensions [PDF]
Nucl.Phys. B395 (1993) 239-262, 1992 A gauge and diffeomorphism invariant theory in (2+1)-dimensions is presented in both first and second order Lagrangian form as well as in a Hamiltonian form. For gauge group $SO(1,2)$, the theory is shown to describe ordinary Einstein gravity with a cosmological constant.
arxiv +1 more source
Effect of sugar beet (Beta vulgaris) and canola (Brassica napus) residue on weeds, yield and yield components of chickpea (Cicer arietinum) [PDF]
پژوهشهای حبوبات ایران, 2018 Introduction Weeds have significant negative effects on agricultural ecosystems. They are responsible for the decline of crop yield because of competition with crops for water, nutrients and sunlight. Existing weed control methods are either expensive or
Behrouz Babaeinjad, Alireza Dadkhah
doaj +1 more source
Surface-Invariants in 2D Classical Yang-Mills Theory [PDF]
Phys.Rev. D73 (2006) 065012, 2005 We study a method to obtain invariants under area-preserving diffeomorphisms associated to closed curves in the plane from classical Yang-Mills theory in two dimensions. Taking as starting point the Yang-Mills field coupled to non dynamical particles carrying chromo-electric charge, and by means of a perturbative scheme, we obtain the first two ...
arxiv +1 more source
Journal of Aerospace Technology and Management, 2012 This paper presents a methodology that employs the electrostatic field variations caused by thundercloud formation or displacement to generate lightning warnings over a region of interest in Southeastern Brazil.
Marco Antonio da Silva Ferro +4 more
doaj
Assembly and transport of nematic colloidal swarms above photo-patterned defects and surfaces
New Journal of Physics, 2018 We investigate the dynamic assembly and swarm translocation of anisometric colloidal particles dispersed in a nematic liquid crystal and driven above a photosensitive surface. We use liquid crystal-enabled electrophoresis to propel these particles via an
Arthur V Straube +5 more
doaj +1 more source
Dyon in the $SU(2)$ Yang--Mills theory with a gauge-invariant gluon mass toward quark confinement [PDF]
, 2019 In the previous paper, we have shown the existence of magnetic monopoles in the pure $SU(2)$ Yang--Mills theory with a gauge-invariant mass term for the gluon field being introduced. In this paper, we extend our previous construction of magnetic monopoles to obtain dyons with both magnetic and electric charges.
arxiv +1 more source
Chinese Meridian Project near-surface atmospheric electric field observations
地球与行星物理论评The near-surface atmospheric electric field is an important parameter in disciplines such as space physics and atmospheric science. Variations in the atmospheric electric field represent the state of the global atmospheric circuit and charge distribution
Lei Li +6 more
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An operational windmill in an open-air museum as a conservation challenge: Lessons from projects recently implemented in Poland [PDF]
Muzeológia a Kultúrne DedičstvoThe article discusses the methods of protecting historic windmills and recognising them as valuable objects of industrial heritage. Therefore, examples of attempts to restore windmills as working mills after 2010 are discussed.
Filip Tomaszewski, Bartosz M. Walczak
doaj +1 more source
Frontiers in Nutrition, 2019 The main operators of the olive oil sector are continuously involved in the development of the olive oil mechanical extraction process with the common aim of increasing both the quality and the oil extraction yield coupled with the potential enhancement ...
Gianluca Veneziani +9 more
doaj +1 more source