59,696 research outputs found
Continuous functions with universally divergent Fourier series on small subsets of the circle
It is shown that quasi all continuous functions on the unit circle have the
property that, for many small subsets E of the circle, the partial sums of
their Fourier series considered as functions restricted to E exhibit certain
universality properties.Comment: 6 page
Double distributions: Loose ends
We point out that double distributions need not vanish at their boundary.
Boundary terms do not change the ambiguity inherent in defining double
distributions; instead, boundary conditions must be satisfied in order to
switch between different decompositions. We analyze both the spin zero and spin
one-half cases.Comment: 4 pages, 0 figures, RevTex 4, Brief Repor
Radiative corrections to deeply virtual Compton scattering
We discuss possibilities of measurement of deeply virtual Compton scattering
amplitudes via different asymmetries in order to access the underlying skewed
parton distributions. Perturbative one-loop coefficient functions and two-loop
evolution kernels, calculated recently by a tentative use of residual conformal
symmetry of QCD, are used for a model dependent numerical estimation of
scattering amplitudes.Comment: 9 pages LaTeX, 3 figures, czjphyse.cls required Talk given by D.
M\"uller at Inter. Workshop ``PRAHA-Spin99'', Prague, Sept. 6-11, 199
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