Results 41 to 50 of about 2,145,711 (307)
Fine structure of perturbed Laguerre-Gaussian beams: Hermite-Gaussian mode spectra and topological charge. [PDF]
Applied Optics, 2020 We found that small perturbations of the optical vortex core in Laguerre-Gaussian (LG) beams generate a fine structure of the Hermite-Gaussian (HG) mode spectrum in the form of weak variations of amplitudes and phases of the HG modes.
A. Volyar +4 more
semanticscholar +1 more source
Tight Focusing of Circular Partially Coherent Radially Polarized Circular Airy Vortex Beam
Photonics, 2023 The tight focusing properties of circular partially coherent radially polarized circular Airy vortex beams (CPCRPCAVBs) are theoretically studied in this paper.
Zhihao Wan +10 more
doaj +1 more source
Journal of High Energy Physics, 2017 We introduce topological non-trivial colorful regions around intersection points of two perpendicular vortex pairs and investigate their influence on topological charge density and eigenmodes of the Dirac operator.
Seyed Mohsen Hosseini Nejad +1 more
doaj +1 more source
Index theorem on chiral Landau bands for topological fermions
, 2021 Topological fermions as excitations from multi-degenerate Fermi points have been attracting increasing interests in condensed matter physics. They are characterized by topological charges, and magnetic fields are usually applied in experiments for their ...
Yang, Shengyuan A., Zhao, Y. X.
core +1 more source
Effect of disorder on topological charge pumping in the Rice-Mele model [PDF]
Physical Review A, 2020 Recent experiments with ultracold quantum gases have successfully realized integer-quantized topological charge pumping in optical lattices. Motivated by this progress, we study the effects of static disorder on topological Thouless charge pumping.
A. Hayward +3 more
semanticscholar +1 more source
Topological Classification and Stability of Fermi Surfaces [PDF]
, 2013 In the framework of the Cartan classification of Hamiltonians, a kind of topological classification of Fermi surfaces is established in terms of topological charges.
Wang, Z. D., Zhao, Y. X.
core +2 more sources
European Physical Journal C: Particles and Fields, 2021 An infinite-dimensional family of analytic solutions in pure SU(2) Yang–Mills theory at finite density in $$(3+1)$$ ( 3 + 1 ) dimensions is constructed. It is labelled by two integeres (p and q) as well as by a two-dimensional free massless scalar field.
Fabrizio Canfora
doaj +1 more source
Topological charge of finite-size photonic crystal modes [PDF]
, 2020 Topological charges are the winding numbers of polarization vectors around the vortex centers of far-field radiation. In this work, the topological charge of photonic crystal modes is theoretically analyzed using an envelope function approach. A group of
Zhixin Wang +4 more
semanticscholar +1 more source
Spin Wave Radiation by a Topological Charge Dipole. [PDF]
Nano letters (Print), 2020 The use of spin waves (SWs) as data carriers in spintronic and magnonic logic devices offers operation at low power consumption, free of Joule heating.
Sebastián A. Díaz +3 more
semanticscholar +1 more source
Chiral condensate, quark charge and chiral density [PDF]
, 1998 We study the topological and fermionic vacuum structure of four-dimensional QCD on the lattice by means of correlators of fermionic observables and topological densities.
Atiyah +7 more
core +2 more sources