Generation of Near‐Circularly Polarized Attosecond Pulse with Tunable Helicity by Unidirectionally Rotating Laser Field
Sign Up to like & getrecommendations! Published in 2020 at "Annalen der Physik"
DOI: 10.1002/andp.201900570
Abstract: A method to produce circularly polarized attosecond pulses with tunable helicity from CO molecule by using an unidirectionally rotating laser field is proposed. It is found that broadband harmonic supercontinuum with circular polarization can be… read more here.
Keywords: unidirectionally rotating; attosecond; polarized attosecond; tunable helicity ... See more keywords
Helicity of perfluoroalkyl chains controlled by the self-assembly of the Ala-Ala dipeptides.
Sign Up to like & getrecommendations! Published in 2019 at "Chirality"
DOI: 10.1002/chir.23130
Abstract: Four Ala-Ala dipeptides with a perfluoroalkyl chain at the N-terminal were synthesized. They were able to self-assemble into helical nanofibers and/or twisted nanobelts in a mixture of DMSO/H2 O. The handedness of nanofibers and nanobelts… read more here.
Keywords: ala ala; chain; helicity perfluoroalkyl; perfluoroalkyl chains ... See more keywords
Massive scattering amplitudes in six dimensions
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep03(2019)198
Abstract: A bstractWe show that a natural spinor-helicity formalism that can describe massive scattering amplitudes exists in D = 6 dimensions. This is arranged by having helicity spinors carry an index in the Dirac spinor 4… read more here.
Keywords: six dimensions; massive scattering; scattering amplitudes; helicity ... See more keywords
Physical projectors for multi-leg helicity amplitudes
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2019)114
Abstract: Abstract We present a method for building physical projector operators for multi-leg helicity amplitudes. For any helicity configuration of the external particles, we define a physical projector which singles out the corresponding helicity amplitude. For… read more here.
Keywords: leg helicity; physical projectors; multi leg; helicity ... See more keywords
Higher spin 3-point functions in 3d CFT using spinor-helicity variables
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep09(2021)041
Abstract: Abstract In this paper we use the spinor-helicity formalism to calculate 3-point functions involving scalar operators and spin-s conserved currents in general 3d CFTs. In spinor-helicity variables we notice that the parity-even and the parity-odd… read more here.
Keywords: point functions; higher spin; spinor helicity; helicity variables ... See more keywords
Helicity and vortex generation
Sign Up to like & getrecommendations! Published in 2018 at "Annals of Physics"
DOI: 10.1016/j.aop.2018.09.008
Abstract: Abstract In this work we have considered the generalization of the minimal coupling prescription. We have obtained the Navier–Stokes equation for the charged fluid embedded into an electromagnetic field. We have analyzed the wave feature… read more here.
Keywords: vortex generation; helicity vortex; helicity; circulation ... See more keywords
Influence of rescattering effects on the helicity dependence of γ→d→→πNN near threshold and its implication to the E-asymmetry and the GDH sum rule
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Journal of Physics"
DOI: 10.1016/j.cjph.2020.07.015
Abstract: Abstract This work deals with investigation of the helicity dependence of the γ → d → → π N N reaction channels near threshold and its implication to the helicity E-asymmetry and the Gerasimov-Drell-Hearn sum… read more here.
Keywords: sum rule; near threshold; helicity dependence; asymmetry ... See more keywords
Pseudohalides regulated diverse helicity in copper(II) coordination polymers derived from a bis(aminoethoxy) ligand
Sign Up to like & getrecommendations! Published in 2017 at "Polyhedron"
DOI: 10.1016/j.poly.2016.12.042
Abstract: Abstract This paper reports the syntheses and structural characterization of three new Cu(II) coordination polymers, namely [Cu(BAEE)(N3)2]∝ (1), [Cu(BAEE)(NCO)2]∝ (2) and [Cu(BAEE)(NCS)2]∝ (3), where BAEE is 1,2-bis(2-aminoethoxy)ethane. Compound 1 is a one-dimensional (1D) single-stranded normal… read more here.
Keywords: copper; diverse helicity; bis aminoethoxy; coordination polymers ... See more keywords
On the spatial segregation of helicity by inertial waves in dynamo simulations and planetary cores
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2018.497
Abstract: The distribution of kinetic helicity in a dipolar planetary dynamo is central to the success of that dynamo. Motivated by the helicity distributions observed in numerical simulations of the Earth’s dynamo, we consider the relationship… read more here.
Keywords: inertial waves; boldsymbol; unicode stix; helicity ... See more keywords
Helicoidal particles in turbulent flows with multi-scale helical injection
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.237
Abstract: We present numerical and theoretical results concerning the properties of turbulent flows with strong multi-scale helical injection. We perform direct numerical simulations of the Navier–Stokes equations under a random helical stirring with power-law spectrum and… read more here.
Keywords: turbulent flows; multi scale; helicity; scale helical ... See more keywords
New exact Betchov-like relation for the helicity flux in homogeneous turbulence
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2023.236
Abstract: Abstract In homogeneous and isotropic turbulence, the relative contributions of different physical mechanisms to the energy cascade can be quantified by an exact decomposition of the energy flux (Johnson, Phys. Rev. Lett., vol. 124, 2020,… read more here.
Keywords: betchov; new exact; mean flux; helicity ... See more keywords