Results 81 to 90 of about 2,145,711 (307)

Measurement-Only Topological Quantum Computation via Anyonic Interferometry

open access: yes, 2008
We describe measurement-only topological quantum computation using both projective and interferometrical measurement of topological charge. We demonstrate how anyonic teleportation can be achieved using "forced measurement" protocols for both types of ...
Aliferis   +53 more
core   +2 more sources

Topology in the SU(Nf) chiral symmetry restored phase of unquenched QCD and axion cosmology [PDF]

open access: yes, 2016
We investigate the topological properties of unquenched $QCD$ on the basis of numerical results of simulations at fixed topological charge, recently reported by Borsanyi et al..
Azcoiti, Vicente
core   +10 more sources

Exchange-biasing topological charges by antiferromagnetism [PDF]

open access: yesNature Communications, 2018
AbstractGeometric Hall effect is induced by the emergent gauge field experienced by the carriers adiabatically passing through certain real-space topological spin textures, which is a probe to non-trivial spin textures, such as magnetic skyrmions. We report experimental indications of spin-texture topological charges induced in heterostructures of a ...
Qing Lin He   +16 more
openaire   +5 more sources

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

open access: yesAdvanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp   +7 more
wiley   +1 more source

Trions in 1+1 dimensions [PDF]

open access: yes, 2010
We consider an Abelian BF-Higgs theory with Nf=2 Higgs fields in 1+1 dimensions. We derive a new BPS-like bound and find topological solitons with tri-charges (topological charge, Q-charge and electric charge).
Eto, Minoru
core  

Quantum Fluctuations versus Topology - a Study in U(1)_2 Lattice Gauge Theory [PDF]

open access: yes, 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 Noncommutative ADHM Instanton [PDF]

open access: yesModern 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
openaire   +2 more sources

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu   +3 more
wiley   +1 more source

Local Charged States of the Gauge Field in Three Dimensional Maxwell-Type Theories [PDF]

open access: yes, 1996
Gauge invariant local creation operators of charged states are introduced and studied in pure gauge theories of the Maxwell type in 2+1D. These states are usually unphysical because of the subsidiary condition imposed on the physical subspace by Gauss ...
Marino, E. C.
core   +2 more sources

Topological charge of asymmetric optical vortices

open access: yesOptics 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
openaire   +2 more sources

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