Results 51 to 60 of about 200,617 (293)

Charge as a Topological Property in Three-Dimensional Time

Reports in Advances of Physical Sciences
This paper presents electric charge as a topological property emerging naturally from the three-dimensional temporal structure previously established.
Gunther Kletetschka
doaj   +1 more source

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
doaj   +1 more source

Helicity and topological charge tunable optical vortex based on a Hermite-Gaussian beam dynamically controlled folded-cavity resonator

Frontiers in Physics, 2023
Helicity and topological charge are two important characteristic parameters for vortex beam applications, including optical communications, optical manipulation and material processing, etc.
Shibing Lin, Shibing Lin, Deen Wang, Deen Wang, Yamin Zheng, Yamin Zheng, Liquan Guo, Liquan Guo, Yifan Zhang, Yifan Zhang, Yongchen Zhuang, Yongchen Zhuang, Lei Huang, Lei Huang   +13 more
doaj   +1 more source

Center Vortices, Nexuses, and Fractional Topological Charge [PDF]

, 1999
It has been remarked in several previous works that the combination of center vortices and nexuses (a nexus is a monopole-like soliton whose world line mediates certain allowed changes of field strengths on vortex surfaces) carry topological charge ...
A. Smilga, E. Floratos, E. Witten, G. Mack, G. Tiktopoulos, G. Tiktopoulos, G. Veneziano, G. ’t Hooft, G. ’t Hooft, H. B. Nielsen, I. Halperin, J. Ambjörn, J. Ambjörn, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, J. M. Cornwall, John M. Cornwall, K. Lee, K. Lee, L. Del Debbio, L. Del Debbio, M. Lavelle, M. Shifman, P. de Forcrand, R. Bertle, R. G. Edwards, T. Banks, T. C. Kraan, T. C. Kraan, T. Eguchi, T. G. Kovács, T. G. Kovács, T. G. Kovács, T. G. Kovács, T. G. Kovács, V. A. Fateev   +44 more
core   +2 more sources

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

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, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Fractional skyrme lines in ferroelectric barium titanate

Physical Review Research
We 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
doaj   +1 more source

Electroweak quark-lepton symmetry and weak topological-charge confinement in the Standard Model with Dirac neutrinos

, 2007
The standard electroweak model with Dirac neutrinos is extended by way of the principles of electroweak quark-lepton symmetry and weak topological-charge confinement to account for quark-lepton charge relations which, if not accidental, are indicative of
Chan H.-M., Cheng T. P., ERNESTO A. MATUTE, Matute E. A., Mohapatra R. N., Salam A., Yao W.-M.   +6 more
core   +1 more source

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, F. Bruckmann, P. de Forcrand, P. J. Moran, P. J. Moran, Peter J. Moran   +5 more
core   +3 more sources

Composition‐Tuned Enhancement of the Anomalous Nernst Effect in FeCo–Pt Thin Films on Rigid and Flexible Substrates

Advanced Engineering Materials, EarlyView.
Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi, Hiroyuki Awano, Kenji Tanabe   +2 more
wiley   +1 more source

Distribution of fermionic and topological observables on the lattice [PDF]

, 1999
We analyze the topological and fermionic vacuum structure of four-dimensional QCD on the lattice by means of correlators of fermionic observables and topological densities. We show the existence of strong local correlations between the topological charge
Atiyah, H. Markum, Hands, Hooft, Kronfeld, Lang, Miyamura, S. Thurner, W. Sakuler   +8 more
core   +3 more sources