Results 91 to 100 of about 7,226 (315)

Monopoles in Dirac spin liquids and their symmetries from instanton calculus

SciPost Physics
The Dirac spin liquid (DSL) is a two-dimensional (2D) fractionalized Mott insulator featuring massless Dirac spinon excitations coupled to a compact U(1) gauge field, which allows for flux-tunneling instanton events described by magnetic monopoles in (2 ...
Shankar Ganesh, Joseph Maciejko
doaj   +1 more source

Ultrabroadband Excitation of Hot Carriers in Plasmonic Nanorods Revealed by Two‐Dimensional Electronic Spectroscopy

Advanced Optical Materials, EarlyView.
This work dissects the ultrafast response of polydisperse plasmonic nanorods using two‐dimensional electronic spectroscopy, uniquely combining temporal and spectral resolution. Our ultrabroadband pulses cover both transverse and longitudinal nanorods’ resonances, revealing sub‐200‐fs dynamics and distinct broadening mechanisms.
Andrea Schirato, Mattia Russo, Luca Moretti, Alessandro Molinelli, Laura Polito, Filippo Rossi, Giulio Cerullo, Giuseppe Della Valle, Margherita Maiuri   +8 more
wiley   +1 more source

Solutions of Umbral Dirac-Type Equations

Mathematics
The aim of this work is to study the method of the normalized systems of functions. The normalized systems of functions with respect to the Dirac operator in the umbral Clifford analysis are constructed.
Hongfen Yuan, Valery Karachik
doaj   +1 more source

Comparative studies of the deformation techniques for the singular-drift problem in the complex Langevin method

EPJ Web of Conferences, 2018
In application of the complex Langevin method to QCD at high density and low temperature, the singular-drift problem occurs due to the appearance of near-zero eigenvalues of the Dirac operator.
Ito Yuta, Nishimura Jun
doaj   +1 more source

Upper Bound Design for the Lipschitz Constant of the FG(ν,q)-Entropy Operator

Mathematics, 2018
This paper develops an upper bound design method of the Lipschitz constant for the generalized Fermi–Dirac information entropy operator with a polyhedral admissible set.
Yuri S. Popkov
doaj   +1 more source

Locality properties of Neuberger's lattice Dirac operator [PDF]

, 1999
Pilar Hernández, Karl Jansen, Martin Lüscher   +2 more
openalex   +1 more source

Initial Distance‐Dependent Mean Force Drives Synaptic Vesicle Motion Toward Fusion Sites in Stimulated Hippocampal Neurons

Advanced Science, EarlyView.
Synaptic vesicle (SV) motion and exocytosis dynamics in the presynaptic terminals of live neurons are intimately linked to synaptic transmission during neuronal activity. In this work, it is revealed that, during electrical stimulation, SVs located farther from their fusion sites exhibit greater straightness and experience larger mean forces directed ...
Gyunam Park, Ji‐Hyun Kim, Hunki Lee, Chungwon Park, Sidong Chen, Luke Bates, Jaeyoung Sung, Hyokeun Park   +7 more
wiley   +1 more source

Dirac structures on Hilbert spaces

International Journal of Mathematics and Mathematical Sciences, 1999
For a real Hilbert space (H,〈,〉), a subspace L⊂H⊕H is said to be a Dirac structure on H if it is maximally isotropic with respect to the pairing 〈(x,y),(x′,y′)〉+=(1/2)(〈x,y′〉+〈x′,y〉).
A. Parsian, A. Shafei Deh Abad
doaj   +1 more source

One-dimensional Dirac operators with zero-range interactions: Spectral, scattering, and topological results [PDF]

, 2014
Konstantin Pankrashkin, Serge Richard
openalex   +1 more source

k-Dirac Operator and Parabolic Geometries [PDF]

Complex Analysis and Operator Theory, 2013
The principal group of a Klein geometry has canonical left action on the homogeneous space of the geometry and this action induces action on the spaces of sections of vector bundles over the homogeneous space. This paper is about construction of differential operators invariant with respect to the induced action of the principal group of a particular ...
openaire   +2 more sources