Results 21 to 30 of about 178,783 (273)

The singularity of the partially coherent beam in biological tissue

open access: yesResults in Physics, 2022
The singularity of the partially coherent beam propagating in biological tissue has been demonstrated, mainly including the properties of the normalized intensity distribution and phase evolution.
Duan Meiling   +4 more
doaj   +1 more source

Sharp focusing of a light field with polarization and phase singularities of an arbitrary order [PDF]

open access: yesКомпьютерная оптика, 2019
Using the Richards-Wolf formalism, we obtain general expressions for all components of the electric and magnetic strength vectors near the sharp focus of an optical vortex with the topological charge m and nth-order azimuthal polarization.
Victor Kotlyar   +2 more
doaj   +1 more source

Bounce Universe with Finite-Time Singularity

open access: yesUniverse, 2022
This work explains how the presence of a Type-IV singularity (a mild singularity) can influence the dynamics of a bouncing universe. In particular, we examine the bounce cosmology that appears with a Type-IV singularity in the context of a ghost-free ...
Sergei D. Odintsov, Tanmoy Paul
doaj   +1 more source

A singular way to search for heavy resonances in missing energy events

open access: yesJournal of High Energy Physics, 2020
The phase space of visible particles in missing energy events may have singularity structures. The singularity variables are devised to capture the singularities effectively for given event topology.
Chan Beom Park
doaj   +1 more source

Dynamics of Coupled Maps with a Conservation Law [PDF]

open access: yes, 1997
A particularly simple model belonging to a wide class of coupled maps which obey a local conservation law is studied. The phase structure of the system and the types of the phase transitions are determined.
Cross, M. C., Grigoriev, R. O.
core   +2 more sources

Singularities and gauge theory phases, II [PDF]

open access: yesAdvances in Theoretical and Mathematical Physics, 2016
We present a simple algebraic construction of all the small resolutions for the SU(5) Weierstrass model. Each resolution corresponds to a subchamber on the Coulomb branch of the five-dimensional N=1 SU(5) gauge theory with matter fields in the fundamental and two-index antisymmetric representations.
Esole, Mboyo   +2 more
openaire   +2 more sources

On phases of generic toric singularities [PDF]

open access: yesJournal of High Energy Physics, 2007
We systematically study the phases of generic toric singularities, using methods initiated in hep-th/0612046. These correspond to Gauged Linear Sigma Models with arbitrary charges. We show that complete information about generic $U(1)^r$ GLSMs can be obtained by studying the GLSM Lagrangian, appropriately modified in the different phases of the theory.
Sarkar, Tapobrata, Singh, Ajay
openaire   +2 more sources

Orbital angular momentum and topological charge of a Gaussian beam with multiple optical vortices [PDF]

open access: yesКомпьютерная оптика, 2020
Here we study theoretically and numerically a Gaussian beam with multiple optical vortices with unitary topological charge (TC) of the same sign, located uniformly on a circle.
Alexey Andreevich Kovalev   +2 more
doaj   +1 more source

New confinement phases from singular SCFT [PDF]

open access: yesJournal of High Energy Physics, 2013
New types of confining phase emerge when some singular SCFT's appearing as infrared fixed points of N=2 supersymmetric QCD (SQCD) are deformed by an N=1 adjoint mass term. We make further checks on the Gaiotto-Seiberg-Tachikawa (GST) description of these vacua against the symmetry and vacuum counting argument, and show that the GST variables correctly ...
Simone Giacomelli, KONISHI, KENICHI
openaire   +2 more sources

Relationship Between Electrical Instability and Pumping Performance During Ventricular Tachyarrhythmia: Computational Study

open access: yesFrontiers in Physiology, 2020
There are representative electrical parameters for understanding the mechanism of reentrant waves in studies on tachyarrhythmia, namely the action potential duration (APD), dominant frequency, phase singularity, and filament.
Da Un Jeong, Ki Moo Lim
doaj   +1 more source

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