Two-loop evolution equations for flavor-singlet light-ray operators
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2019)191
Abstract: A bstractQCD in non-integer d = 4 − 2ϵ space-time dimensions enjoys conformal invariance at the special fine-tuned value of the coupling. Counterterms for composite operators in minimal subtraction schemes do not depend on ϵ… read more here.
Keywords: light ray; flavor singlet; evolution equations; two loop ... See more keywords
Light ray fluctuation and lattice refinement of simplicial quantum gravity
Sign Up to like & getrecommendations! Published in 2022 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/acd97e
Abstract: In several approaches of non-perturbative quantum gravity, a major outstanding problem is to obtain results valid at the infinite lattice refinement limit. Working with Lorentzian simplicial quantum gravity, we compute light ray fluctuation probabilities in… read more here.
Keywords: quantum gravity; lattice refinement; light ray; quantum ... See more keywords
The optical geometry definition of the total deflection angle of a light ray in curved spacetime
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/08/028
Abstract: Assuming a static and spherically symmetric spacetime, we propose a novel concept of the total deflection angle of a light ray in terms of the optical geometry which is the Riemannian geometry experienced by the… read more here.
Keywords: total deflection; geometry; light ray; deflection angle ... See more keywords
Light curves of light rays passing through a wormhole
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.95.024030
Abstract: Gravitational lensing is a good probe into the topological structure of dark gravitating celestial objects. In this paper, we investigate the light curve of a light ray that passes through the throat of an Ellis… read more here.
Keywords: light curve; curve light; light ray; light curves ... See more keywords
Snakes diffract like a light ray to put them on the right track
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Experimental Biology"
DOI: 10.1242/jeb.192807
Abstract: ![Graphic][1] Snakes travel in the form of an undulating S-shape produced by a wave of muscle contractions propagating from their head to their tail. How do snakes preserve their motion when they encounter unexpected obstacles… read more here.
Keywords: put right; ray put; light ray; diffract like ... See more keywords