Results 31 to 40 of about 199,377 (193)
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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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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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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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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Topology of Born-Infeld AdS black holes in 4D novel Einstein-Gauss-Bonnet gravity
Physics Letters B, 2022 The topological classification of critical points of black holes in 4D Einstein-Gauss-Bonnet gravity coupled to Born-Infeld theory is investigated. Considered independently, Born-infeld corrections to the Einstein action alter the topological charge of ...
Pavan Kumar Yerra +1 more
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Topological charge of center vortices [PDF]
Nuclear Physics B - Proceedings Supplements, 2003 Proceedings, Lattice 2002, 3p ...
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Thermal Simulations, Open Boundary Conditions and Switches
EPJ Web of Conferences, 2018 SU(N) gauge theories on compact spaces have a non-trivial vacuum structure characterized by a countable set of topological sectors and their topological charge. In lattice simulations, every topological sector needs to be explored a number of times which
Burnier Yannis +3 more
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, 2012 We analyze topological charge contributions from classical SU(2) center vortices with shapes of planes and spheres using different topological charge definitions, namely the center vortex picture of topological charge, a discrete version of F\~{F} in the
Faber, M. +2 more
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Impact of Dynamical Fermions on QCD Vacuum Structure [PDF]
, 2008 We examine how dynamical fermions affect both the UV and infrared structure of the QCD vacuum. We consider large $28^3 \times 96$ lattices from the MILC collaboration, using a gluonic definition of the topological charge density, founded on a new over ...
Derek B. Leinweber +5 more
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