Results 31 to 40 of about 200,617 (293)
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.
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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
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Skyrmions and Hall Transport [PDF]
, 2016 We derive a generalized set of Ward identities that captures the effects of topological charge on Hall transport. The Ward identities follow from the 2+1 dimensional momentum algebra, which includes a central extension proportional to the topological ...
Kim, Bom Soo, Shapere, Alfred D.
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Topological charges of noncommutative soliton [PDF]
Physics Letters B, 2001 The noncommutative soliton is characterized by the use of the projection operators in non-commutative space. By using the close relation with the K-theory of $C^*$-algebra, we consider the variations of projection operators along the commutative directions and identify their topological charges.
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Topology and index theorem with a generalized Villain lattice action – a test in 2d
Physics Letters B, 2019 Using 2-d U(1) lattice gauge theory we study two definitions of the topological charge constructed from a generalized Villain action and analyze the implementation of the index theorem based on the overlap Dirac operator.
Christof Gattringer, Pascal Törek
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Low-dimensional long-range topological structure in the QCD vacuum [PDF]
, 2003 Lattice topological charge associated with Ginsparg-Wilson fermions exhibits generic topological stability over quantum ensemble of configurations contributing to the QCD path integral. Moreover, the underlying chiral symmetry leads to the suppression of
Cornwall +19 more
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Probing Topological Charge of Discrete Vortices
Physical Review Applied, 2023 Discrete vortex, formed by a one-dimensional (1D) ring array of lasers, contains high output power as compared to a conventional continuous vortex, therefore, has attracted considerable interest due to widespread applications in various fields. We present a method for probing the magnitude and sign of the topological charge (TC) of an unknown discrete ...
Vasu Dev, Vishwa Pal
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Spiral phase plate with multiple singularity centers
Компьютерная оптика, 2020 We investigate a multispiral phase plate (MSPP) with multiple centers of phase singularity arbitrarily located in the MSPP plane. Equations to describe the topological charge of an optical vortex in the initial plane immediately behind the MSPP and ...
V.V. Kotlyar +3 more
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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
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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.
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