Results 1 to 10 of about 5,245,414 (245)

Singularities of plane complex curves and limits of Kähler metrics with cone singularities. I: Tangent Cones

open access: yesComplex Manifolds, 2017
The goal of this article is to provide a construction and classification, in the case of two complex dimensions, of the possible tangent cones at points of limit spaces of non-collapsed sequences of Kähler-Einstein metrics with cone singularities.
Borbon Martin de
doaj   +2 more sources

Rigorous reconstruction of gluon propagator in the presence of complex singularities

open access: yesSciPost Physics Proceedings, 2022
It has been suggested that the Landau-gauge gluon propagator has complex singularities, which invalidates the K\"all\'en-Lehmann spectral representation.
Yui Hayashi, Kei-Ichi Kondo
doaj   +1 more source

Spatiotemporal Organization of Electromechanical Phase Singularities during High-Frequency Cardiac Arrhythmias

open access: yesPhysical Review X, 2022
Ventricular fibrillation (VF) is a life-threatening electromechanical dysfunction of the heart associated with complex spatiotemporal dynamics of electrical excitation and mechanical contraction of the heart muscle.
A. Molavi Tabrizi   +5 more
doaj   +1 more source

The Poynting Vector Field Generic Singularities in Resonant Scattering of Plane Linearly Polarized Electromagnetic Waves by Subwavelength Particles

open access: yesNanomaterials, 2022
We present the results of a study of the Poynting vector field generic singularities at the resonant light scattering of a plane monochromatic linearly polarized electromagnetic wave by a subwavelength particle.
Michael I. Tribelsky   +1 more
doaj   +1 more source

Axisymmetric solutions to Einstein field equations via integral transforms

open access: yesHeliyon, 2023
In this paper, we present new axisymmetric and reflection symmetric vacuum solutions to the Einstein field equations. They are obtained using the Hankel integral transform method and all three solutions exhibit naked singularities.
D. Batic, N.B. Debru, M. Nowakowski
doaj   +1 more source

Rigidity properties of holomorphic Legendrian singularities [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2019
We study the singularities of Legendrian subvarieties of contact manifolds in the complex-analytic category and prove two rigidity results. The first one is that Legendrian singularities with reduced tangent cones are contactomorphically biholomorphic to
Jun-Muk Hwang
doaj   +1 more source

On the Links of Simple Singularities, Simple Elliptic Singularities and Cusp Singularities

open access: yesDemonstratio Mathematica, 2015
This is a survey article about the study of the links of some complex hypersurface singularities in ℂ3 . We study the links of simple singularities, simple elliptic singularities and cusp singularities, and the canonical contact structures on them. It is
Kasuya Naohik
doaj   +1 more source

Coulomb branches with complex singularities

open access: yesJournal of High Energy Physics, 2018
We construct 4d superconformal field theories (SCFTs) whose Coulomb branches have singular complex structures. This implies, in particular, that their Coulomb branch coordinate rings are not freely generated.
Philip C. Argyres, Mario Martone
doaj   +1 more source

Global configurations of singularities for quadratic differential systems with exactly two finite singularities of total multiplicity four

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
In this article we obtain the geometric classification of singularities, finite and infinite, for the three subclasses of quadratic differential systems with $m_f=4$ possessing exactly two finite singularities, namely: (i) systems with two double complex
Joan Artés   +4 more
doaj   +1 more source

Light strings and strong coupling in F-theory

open access: yesJournal of High Energy Physics, 2023
We consider 4d N $$ \mathcal{N} $$ = 1 theories arising from F-theory compactifications on elliptically-fibered Calabi-Yau four-folds and investigate the non-perturbative structure of their scalar field space beyond the large volume/large complex ...
Max Wiesner
doaj   +1 more source

Home - About - Disclaimer - Privacy