Light Served with a Twist

Construction of nonlocal light–cone operators with definite twist

With the growing precision of data for light– cone dominated hard scattering processes like DIS, DVCS and various (semi) exclusive processes a better perturbative understanding of QCD concerning higher twist contributions is required. Thereby the nonlocal light–cone expansion (LCE) is optimally adapted since the same nonlocal LC operator, and its anomalous dimension, are related to different ph...

Simulation of a New Process Design to Fabricate a Rectangular Twist Waveguide Using Extrusion and a Twist Die

The aim of the present study is to determine the feasibility of making a rectangular twist waveguide used to rotate electromagnetic waves. For this purpose, the process of fabricating an aluminum rectangular twist waveguide was simulated by making use of finite element method and Deform software. The optimum length and angle of the twist die for manufacturing a twist waveguide with inner cross ...

Superconductivity with a Twist

Superconductivity and magnetism are typically antithetical forms of order. After all, in conventional superconductors, magnetic impurities are destructive to superconductivity as they break Cooper pairs [1]. But the discovery in 1979 of so-called heavy fermion superconductivity, found near an antiferromagnetic phase, led to a shift in thinking on this subject [2]. Since then, some of the most i...

Polarons with a twist

We consider a polaron model where molecular rotations are important. Here the usual hopping between neighboring sites is affected directly by the electron-phonon interaction via a twist-dependent hopping amplitude. This model may be of relevance for electronic transport in complex molecules and polymers with torsional degrees of freedom, such as DNA, as well as in molecular electronics experime...

A Clockwork Orange--served with whipped cream?