Results 61 to 70 of about 199,377 (193)
Comparative study of topological charge [PDF]
, 2015 Comparative study of topological charge is performed. Topological charges are measured by a cloverleaf operator on smoothed gauge configurations. Various types of smoothing techniques are employed.
Namekawa, Yusuke
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Topological Charge of Noncommutative ADHM Instanton [PDF]
Modern Physics Letters A, 2003 We analytically calculate the topological charge of general noncommutative U (N) instantons using the Corrigan's identity and find that the result is exactly the instanton number k, which appears in the noncommutative ADHM construction as the dimension of the vector space V. This result coincides with the corresponding fact in the commutative case.
Tian, Yu +2 more
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A Time-Reversal Invariant Topological Phase at the Surface of a 3D Topological Insulator
, 2013 A 3D fermionic topological insulator has a gapless Dirac surface state protected by time-reversal symmetry and charge conservation symmetry. The surface state can be gapped by introducing ferromagnetism to break time-reversal symmetry, introducing ...
Bonderson, Parsa +2 more
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Quantum Fluctuations versus Topology - a Study in U(1)_2 Lattice Gauge Theory [PDF]
, 1997 Using the geometric definition of the topological charge we decompose the path integral of 2-dimensional U(1) lattice gauge theory into topological sectors.
Bardeen +23 more
core +4 more sources
Topological charge of asymmetric optical vortices
Optics Express, 2020 We obtain theoretical relationships to define topological charge (TC) of vortex laser beams devoid of radial symmetry, namely asymmetric Laguerre-Gaussian (LG), asymmetric Bessel-Gaussian (BG), and asymmetric Kummer beams, as well as Hermite-Gaussian (HG) vortex beams.
Victor V. Kotlyar, Alexey A. Kovalev
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Компьютерная оптикаWe investigate the topological charge of superposition of parallel identical vortex beams of arbitrary shape – either Laguerre-Gaussian beams or Bessel-Gaussian beams or some other vortex beams with a rotationally symmetric intensity distribution.
A.A. Kovalev, V.V. Kotlyar, A.G. Nalimov
doaj +1 more source
Arbitrary orbital angular momentum addition in second harmonic generation
New Journal of Physics, 2014 We demonstrate second harmonic generation performed with optical vortices with different topological charges imprinted on orthogonal polarizations. Besides the intuitive charge doubling, we implement arbitrary topological charge addition on the second ...
W T Buono +4 more
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Transport measurement of fractional charges in topological models
npj Quantum Materials, 2023 The static topological fractional charge (TFC) in condensed matter systems is related to the band topology and thus has potential applications in topological quantum computation.
Shu-guang Cheng +4 more
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Localization properties of fermions and bosons [PDF]
, 2006 The topological structure of the QCD vacuum can be probed by monitoring the spatial localization of the low-lying Dirac eigenmodes. This approach can be pursued on the lattice, and unlike the traditional one requires no smoothing of the gauge field.
de Forcrand, Philippe
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Topological susceptibility near Tc in SU(3) gauge theory
Physics Letters B, 2016 Topological charge susceptibility χt for pure gauge SU(3) theory at finite temperature is studied using anisotropic lattices. The over-improved stout-link smoothing method is utilized to calculate the topological charge.
Guang-Yi Xiong +5 more
doaj +1 more source