Results 61 to 70 of about 4,018,148 (250)
Neurovascular Contacts in the Pathophysiology of Neuralgic Amyotrophy: An Observational Study
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Neuralgic amyotrophy (NA) is a prevalent, monophasic, multifocal immune‐mediated neuropathy. A distinctive characteristic of the disease is the occurrence of nerve or fascicle constrictions and torsions (NA‐associated focal nerve lesions, NAFL). The pathophysiology underlying this phenomenon remains to be fully elucidated.
Johannes Fabian Holle +4 more
wiley +1 more source
Spinning boundary correlators from (A)dS4 twistors
Journal of High Energy PhysicsWe develop a twistor-space framework to compute boundary correlators via a boundary limit of nested Penrose transforms in (A)dS4. Starting from correlators of (anti-)self-dual bulk fields, the boundary limit reproduces the correlators of the dual ...
Mariana Carrillo González +1 more
doaj +1 more source
Model of massless relativistic particle with continuous spin and its twistorial description
Journal of High Energy Physics, 2018 We propose a new world-line Lagrangian model of the D= 4 massless relativistic particle with continuous spin and develop its twistorial formulation. The description uses two Penrose twistors subjected to four first class constraints.
I. L. Buchbinder +3 more
doaj +1 more source
Deep Learning Pose Estimation for Phenotyping of Co‐Occurring Hyperkinetic Movement Disorders
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To explore whether routine outpatient video combined with deep learning‐based pose estimation and clinically interpretable kinematic features can support multi‐label phenotyping of co‐occurring hyperkinetic movement disorders (HMDs).
Laura Cif +17 more
wiley +1 more source
Journal of Inequalities and Applications, 2010 The use of twistor methods in the study of Jacobi fields has proved quite fruitful, leading to a series of results. L. Lemaire and J. C. Wood proved several properties of Jacobi fields along harmonic maps from the two-sphere to the complex projective ...
Bruno Ascenso Simões
doaj +2 more sources
An Ode to the Penrose and Witten transforms in twistor space for 3D CFT
Journal of High Energy PhysicsHere we discuss the construction of Sp(4; ℝ) invariant objects in the twistor space for three dimensional conformal field theories. The Sp(4; ℝ) invariant projective delta function, alongside the Twistor symplectic dot product invariants form the basis ...
Aswini Bala, Dhruva K. S
doaj +1 more source
Journal of High Energy Physics, 2023 We elaborate on various aspects of our top-down celestial holographic duality wherein the semiclassical bulk spacetime is a 4d asymptotically flat, self-dual Kähler geometry known as Burns space.
Kevin Costello +2 more
doaj +1 more source
Properties of Hyperkähler Manifolds and Their Twistor Spaces [PDF]
Communications in Mathematical Physics, 2009 We describe the relation between supersymmetric sigma-models on hyperkahler manifolds, projective superspace, and twistor space. We review the essential aspects and present a coherent picture with a number of new results.
Lindström, Ulf, Roček, Martin
openaire +3 more sources
Adding flavour to twistor strings [PDF]
, 2007 Twistor string theory is known to describe a wide variety of field theories at tree--level and has proved extremely useful in making substantial progress in perturbative gauge theory.
Papageorgakis, Constantinos +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil +2 more
wiley +1 more source