Results 31 to 40 of about 34,648 (262)
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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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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Charged topological entanglement entropy
Physical Review B, 2016 14 pages, Explanation added in section ...
Matsuura, Shunji +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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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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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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Generation of terahertz vector beam bearing tailored topological charge
APL Photonics, 2023 Optical vector beams have great potential in many applications, for example optical tweezers, information transmission and processing, laser surface structuring, particle acceleration, and vortex dichroism spectroscopy. However, the reported vector beams
Sen Mou +6 more
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Charges and Electromagnetic Radiation as Topological Excitations [PDF]
Advances in High Energy Physics, 2017 We discuss a model with stable topological solitons in Minkowski space with only three degrees of freedom, the rotational angles of a spatial Dreibein. This model has four types of solitons differing in two topological quantum numbers which we identify with electric charge and spin.
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Fractional skyrme lines in ferroelectric barium titanate
Physical Review ResearchWe predict a topological defect in perfectly screened ferroelectric barium titanate which we call a skyrme line. These are linelike objects characterized by skyrmionic topological charge.
Chris Halcrow, Egor Babaev
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FEBS Open Bio, EarlyView.Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young +7 more
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