نتایج جستجو برای: gauge factor
تعداد نتایج: 893980 فیلتر نتایج به سال:
Generalizing self-duality on R2×S2 to higher dimensions, we consider the Donaldson-UhlenbeckYau equations on R2n×S2 and their noncommutative deformation for the gauge group U(2). Imposing SO(3) invariance (up to gauge transformations) reduces these equations to vortex-type equations for an abelian gauge field and a complex scalar on R θ . For a special S-radius R depending on the noncommutativi...
In the dynamical gauge-Higgs unification of electroweak interactions in the Randall-Sundrum warped spacetime the Higgs boson mass is predicted in the range 120 GeV – 290 GeV, provided that the spacetime structure is determined at the Planck scale. Couplings of quarks and leptons to gauge bosons and their KaluzaKlein (KK) excited states are determined by the masses of quarks and leptons. All qua...
The structure of the quark and lepton masses and mixing angles provides one of the few windows we have on the underlying physics generating the Standard Model. In an attempt to identify the underlying symmetry group we look for the simplest gauge extension of the SUSY standard model capable of generating the observed structure. We show that the texture structure and hierarchical form found in t...
Among T /Γ orbifold compactifications of M-theory, we examine models containing the particle physics Standard Model in four-dimensional spacetimes, which appear as fixed subspaces of the ten-dimensional spacetimes at each end of the interval, I ≃ S/Z2, spanning the 11 dimension. Using the Z7 projection to break the E8 gauge symmetry in each of the four-planes and a limiting relation to correspo...
Transverse momentum distribution of gauge bosons W± and Z is calculated using unintegrated parton distributions obtained by solving leading order CCFM equation(s) in the impact parameter space. For illustration we compare the results of the fixed-order collinear, softgluon resummation and CCFM approaches. A parameter of a nonperturbative form factor is adjusted to the D0 data. In contrast to th...
We study B-type D-branes in linear sigma models with Abelian gauge groups. The most important finding is the grade restriction rule. It classifies representations of the gauge group on the Chan-Paton factor, which can be used to define a family of D-branes over a region of the Kähler moduli space that connects special points of different character. As an application, we find a precise, transpar...
Inkjet-printed strain gauges on flexible substrates have recently been investigated for biomedical motion detection as well the monitoring of structural deformation. This study performed a topographical analysis an inkjet-printed gauge constructed using silver conductive ink PET (polyethylene terephthalate) substrate. Serpentine strain-gauge sensors various thicknesses and widths were fabricate...
We determine non-perturbatively a fixed-point (FP) action for fermions in the two-dimensional U(1) gauge (Schwinger) model. Our parameterization for the fermionic action has terms within a 7× 7 square on the lattice, using compact link variables. With the Wilson fermion action as starting point we determine the FP-action by iterating a block spin transformation (BST) with a blocking factor of 2...
Two-loop corrections for the form factor in a massive Abelian theory are evaluated, which result from the insertion of massless fermion or scalar loops into the massive gauge boson propagator. The result is valid for arbitrary energies and gauge boson mass. Power-suppressed terms vanish rapidly in the high energy region where the result is well approximated by a polynomial of third order in ln(...
We present a highly elastic strain gauge based on capacitive sensing of parallel, carbon nanotube-based percolation electrodes separated by a dielectric elastomer. The fabrication, relying on vacuum filtration of single-walled carbon nanotubes and hydrophobic patterning of silicone, is both rapid and inexpensive. We demonstrate reliable, linear performance over thousands of cycles at up to 100%...
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