Results 11 to 20 of about 44,395 (299)

Higher topological charge and the QCD vacuum

Physical Review Research, 2020
It is shown that gauge field configurations with higher topological charge modify the structure of the QCD vacuum, which is reflected in its dependence on the CP-violating topological phase θ.
Fabian Rennecke
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A charge-density-wave topological semimetal [PDF]

Nature Physics, 2021
Topological physics and strong electron-electron correlations in quantum materials are typically studied independently. However, there have been rapid recent developments in quantum materials in which topological phase transitions emerge when the single-particle band structure is modified by strong interactions.
Wujun Shi, Benjamin J. Wieder, Holger L. Meyerheim, Yan Sun, Yang Zhang, Yiwei Li, Lei Shen, Yanpeng Qi, Lexian Yang, Jagannath Jena, Peter Werner, Klaus Koepernik, Stuart Parkin, Yulin Chen, Claudia Felser, B. Andrei Bernevig, Zhijun Wang   +16 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, Annalisa D’Arco, Luca Tomarchio, Salvatore Macis, Alessandro Curcio, Stefano Lupi, Massimo Petrarca   +6 more
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Wilson Fermions and the topological charge on the lattice [PDF]

Nuclear Physics B, 1986
We investigate the realization on the lattice of the relation between the chiral properties of the fermions and the topological properties of the gauge field. A lattice definition of the topological charge density via the U(1) Adler-Bardeen anomaly is analysed with the help of given configurations of nontrivial topology and for 2-dimensional quenched ...
Karsch, Frithjof, Seiler, E., Stamatescu, I. O.   +2 more
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Nonvolatile current-induced topological charge imbalance of magnetic textures

Communications Physics
The topological charge of magnetic solitons gives rise to characteristic Hall-type effects, which allows to recognize the nontrivial topology of the spin textures, such as skyrmions or antiskyrmions.
Shangyuan Wang, Lei Qiu, Ka Shen
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Chiral symmetry breaking and topological charge of zigzag graphene nanoribbons

New Journal of Physics
Interacting quasi-one-dimensional zigzag graphene nanoribbons display gapped edge excitations. Although the self-consistent Hartree–Fock fields break chiral symmetry, our work demonstrates that zigzag graphene nanoribbons maintain their status as short ...
Hyun Cheol Lee, S-R Eric Yang
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A TOPOLOGICAL INTERPRETATION OF THE COLOR CHARGE [PDF]

Modern Physics Letters A, 2007
We develop a theory on a topologically nontrivial manifold which leads to different vacuum backgrounds at the field level. The different colors of the same quark flavor live in different backgrounds generated by the action of the torsion subgroup of H2(M, 2πℤ) on H2(M, 2πℤ) itself.
MINGUZZI, ETTORE, C. TEJERO PRIETO
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Biasing topological charge injection in topological matter [PDF]

Physical Review B, 2021
We explore the interplay between topologies in the momentum and real spaces to formulate a thermodynamic description of nonequilibrium injection of topological charges under external bias. We show that the edge modes engendered by the momentum-space topology can play a functional role of connecting the external reservoirs to the bulk transport of ...
Mostafa Tanhayi Ahari, Shu Zhang, Ji Zou, Yaroslav Tserkovnyak   +3 more
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Topological charge of a superposition of identical parallel single-ringed Laguerre-Gaussian beams

Компьютерная оптика, 2022
We study a superposition of several identical parallel single-ringed Laguerre-Gaussian beams. Both for the initial plane and for the far field, we show analytically and confirm numerically that if the weighting coefficients of the superposition are real ...
V.V. Kotlyar, A.A. Kovalev, A.A. Savelyeva   +2 more
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Electrically charged topological solitons [PDF]

Nuclear Physics B, 2001
Two new families of T-Dual integrable models of dyonic type are constructed. They represent specific $A_n^{(1)}$ singular Non-Abelian Affine Toda models having U(1) global symmetry. Their 1-soliton spectrum contains both neutral and U(1) charged topological solitons sharing the main properties of 4-dimensional Yang-Mills-Higgs monopoles and dyons.
Gomes, J. F., Gueuvoghlanian, E. P., Sotkov, G. M., Zimerman, A. H.   +3 more
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