Results 51 to 60 of about 4,843 (209)
On next-to-eikonal exponentiation
, 2010 The eikonal approximation is at the heart of many theoretical and phenomenological studies involving multiple soft gauge boson emissions in high energy physics.
Laenen, Eric +11 more
core +1 more source
Aspects of Planckian scattering beyond the eikonal [PDF]
, 1998 Sherpa Romeo green journal. Permission to archive final published version.We discuss an approach to compute two-particle scattering amplitudes for spinless light particles colliding at Planckian centre-of-mass energies, with increasing momentum transfer
Das, Saurya, Majumdar, Parthasarathi
core +1 more source
Infrared divergences and the eikonal exponentiation
, 2021 The aim of this article is to explore the interplay between the eikonal resummation in impact-parameter space and the exponentiation of infrared divergences in momentum space for gravity amplitudes describing collisions of massive objects.
Heissenberg, Carlo,, Heissenberg, Carlo
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The Journal of Physiology, EarlyView.Abstract figure legend Using a multiscale computational model of left ventricular electromechanics, we investigated how sarcomere dynamics influence the end‐systolic pressure‐volume (ESPV) relationship in ejecting beats compared to isovolumetric beats.
Francesco Regazzoni +2 more
wiley +1 more source
Microscopic unitary description of tidal excitations in high-energy string-brane collisions [PDF]
, 2013 The eikonal operator was originally introduced to describe the effect of tidal excitations on higher-genus elastic string amplitudes at high energy.
Veneziano G. +16 more
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The Journal of Physiology, EarlyView.Abstract figure legend Graphical representation of methods. We implemented three biventricular geometric models (Zenger et al., 2020) with rule‐based myocardial fibre orientations (Bayer et al., 2018). We evaluated variability in the fibre orientation via four sets of parameter distributions to determine the role of the primary and imbrication angles ...
Lindsay C. R. Tanner +8 more
wiley +1 more source
Relativistic eikonal expansion. [Scalar-scalar theory]
, 1977 The generalized ladder series of Feynman diagrams for scattering of two particles by scalar meson exchange is expanded, using functional methods, to obtain the relativistic eikonal approximation and the next two terms of an expansion about the eikonal ...
McNeil, James A., Wallace, Stephen J.
core +1 more source
Path integral approach to eikonal and next-to-eikonal exponentiation [PDF]
Journal of High Energy Physics, 2009 We approach the issue of exponentiation of soft gauge boson corrections to scattering amplitudes from a path integral point of view. We show that if one represents the amplitude as a first quantized path integral in a mixed coordinate-momentum space representation, a charged particle interacting with a soft gauge field is represented as a Wilson line ...
Laenen, E., Stavenga, G., White, C.D.
openaire +6 more sources
The Journal of Physiology, EarlyView.Abstract figure legend This study examines the relationships between activation and repolarization times in epicardial reconstructed unipolar electrograms derived from ECG‐imaging in patients with normal and delayed ventricular activation. In patients with a narrow QRS‐complex, ECG‐imaging reveals significant variability in the activation ...
Karin C. Smits +9 more
wiley +1 more source
Atrial fibrosis in atrial fibrillation: Mechanisms, mapping techniques and clinical applications
The Journal of Physiology, EarlyView.Abstract figure legend Summary of key aspects of atrial fibrosis in atrial fibrillation, highlighting atrial fibrosis as a hallmark of atrial fibrillation (AF). (1) Different types of fibrosis (blue), illustrating reparative and reactive fibrosis; (2) fibrosis detection techniques (green), illustrating late gadolinium enhancement cardiac magnetic ...
Caterina Vidal Horrach +8 more
wiley +1 more source