Publications by authors named "O Aharony"
We study the low-energy limit of Wilson lines (charged impurities) in conformal gauge theories in 2+1 and 3+1 dimensions. As a function of the representation of the Wilson line, certain defect operators can become marginal, leading to interesting renormalization group flows and for sufficiently large representations to complete or partial screening by charged fields. This result is universal: in large enough representations, Wilson lines are screened by the charged matter fields.
View Article and Find Full Text PDFAutomatic Characterization of Retinal Blood Flow Using OCT Angiograms.
Transl Vis Sci Technol
July 2019
Article Synopsis
- - The study aimed to analyze the retinal vascular network in healthy and diseased cases using optical coherence tomography angiography (OCTA) images, involving 56 eyes from 28 patients with conditions like diabetic retinopathy, age-related macular degeneration, and retinal vein occlusion.
- - An automated algorithm was used to classify OCTA images and provide quantitative data on global vessel density, fractal dimension, and fovea avascular zone area, achieving a classification success rate of 83.9%.
- - The results indicated that the vessel density measurements from the algorithm were significantly lower than previous studies and OCTA readings, yet comparable to known gold standards, suggesting the algorithm effectively identifies true vessels and improves assessment of retinal disorders.
We study the renormalization group flow in general quantum field theories with quenched disorder, focusing on random quantum critical points. We show that in disorder-averaged correlation functions the flow mixes local and nonlocal operators. This leads to a new critical exponent related to the disorder (as in classical disorder).
View Article and Find Full Text PDFExotic nonsupersymmetric gauge dynamics from supersymmetric QCD.
Phys Rev D Part Fields
November 1995