Results 41 to 50 of about 2,709,176 (152)
Small-Recoil Approximation [PDF]
Int.J.Mod.Phys. A14 (1999) 3435-3450, 1999 In this review we discuss a technique to compute and to sum a class of Feynman diagrams, and some of its applications. These are diagrams containing one or more energetic particles that suffer very little recoil in their interactions. When recoil is completely neglected, a decomposition formula can be proven.
arxiv +1 more source
Objective Accommodation Amplitude Measurements Using a New Autorefractometer Device
Beyoglu Eye Journal, 2019 INTRODUCTION[|]To measure the value of objective accommodation amplitude (AA) in patients using the new autorefractometer device and to evaluate the effects of age, refraction errors, pupil diameter on objective AA measurements.[¤]METHODS[|]Three hundred
Kemal Özülken, Hasan Kızıltoprak
doaj +1 more source
Changes in accommodative function following small-incision lenticule extraction for high myopia.
PLoS ONE, 2020 PurposeTo examine whether the amplitude of accommodation, the accommodative response, and the accommodative facility is affected and correlated with changes in higher-order aberrations for patients with high myopia surgically treated with small-incision ...
Anders Gyldenkerne +4 more
doaj +1 more source
Traduction commentée en français de la Conférence Bakerienne Sur le Mécanisme de l'Oeil de Thomas Young (1800) [PDF]
arXiv, 2021 On November 27, 1800, Thomas Young presents for the second time to the Royal Society of London his theory of the musclurity of the crystalline lens, as being the cause of the accommodation of the eye to different distances. This question had indeed been the topic of his very first communication to the Royal Society seven years earlier; from which he ...
arxiv
Multichannel 0-to-2 and 1-to-2 transition amplitudes for arbitrary spin particles in a finite volume [PDF]
Phys. Rev. D 92, 074509 (2015), 2015 We present a model-independent, non-perturbative relation between finite-volume matrix elements and infinite-volume $\textbf{0}\rightarrow\textbf{2}$ and $\textbf{1}\rightarrow\textbf{2}$ transition amplitudes. Our result accommodates theories in which the final two-particle state is coupled to any number of other two-body channels, with all angular ...
arxiv +1 more source
Relativistic, model-independent, multichannel $2\to2$ transition amplitudes in a finite volume [PDF]
Phys. Rev. D 94, 013008 (2016), 2015 We derive formalism for determining $\textbf{2} + \mathcal J \to \textbf{2}$ infinite-volume transition amplitudes from finite-volume matrix elements. Specifically, we present a relativistic, model-independent relation between finite-volume matrix elements of external currents and the physically observable infinite-volume matrix elements involving two ...
arxiv +1 more source
On the soft limit of open string disk amplitudes with massive states [PDF]
, 2015 We discuss the soft behaviour of open string amplitudes with gluons and massive states in any dimension. Notwithstanding non-minimal couplings of massive higher spin states to gluons, relying on OPE and factorization, we argue that the leading and sub-leading terms are universal and identical to the ones in Yang-Mills theories.
arxiv +1 more source
Testing Gravity with Gravitational Waves from Binary Black Hole Mergers: Contributions from Amplitude Corrections [PDF]
Phys. Rev. D 100, 104001 (2019), 2019 The detection of gravitational waves has offered us the opportunity to explore the dynamical and strong-field regime of gravity. Because matched filtering is more sensitive to variations in the gravitational waveform phase than the amplitude, many tests of gravity with gravitational waves have been carried out using only the former. Such studies cannot
arxiv +1 more source
Visual efficiency among teenaged athletes and non-athletes [PDF]
International Journal of Ophthalmology, 2017 AIM: To compare visual efficiency, specifically accom-modation, vergence, and oculomotor functions among athletes and non-athletes. METHODS: A cross-sectional study on sports vision screening was used to evaluate the visual skills of 214 elementary ...
Rokiah Omar +4 more
doaj +1 more source
Correlation Between Axial Length and Amplitude of Accommodation in Myopia Patients
Journal of Public Health and PharmacyBackground: Myopia is the most common refractive disorder and is a global concern because it can cause more serious eye problems. Excessive prolonged axial growth of the eyeball can lead to myopia.
Evelyn Angie +2 more
openalex +4 more sources