5,788 research outputs found
The multiplicity one case of Lusztig's conjecture
We prove the multiplicity one case of Lusztig's conjecture on the irreducible
characters of reductive algebraic groups for all fields with characteristic
above the Coxeter number.Comment: 15 pages; revised version: title changed, stronger emphasis on
Lusztig's conjectur
On the I=2 channel pi-pi interaction in the chiral limit
An approximate local potential for the residual pi+ pi+ interaction is
computed. We use an O(a**2) improved action on a coarse 9x9x9x13 lattice with
approximately a=0.4fm. The results present a continuation of previous work:
Increasing the number of gauge configurations and quark propagators we attempt
extrapolation of the pi+ pi+ potential to the chiral limit.Comment: LATTICE98(spectrum) LaTeX2e, 3 pages, 3 eps figure
Excitation Spectra in a Heavy-Light Meson-Meson System
A system of two static quarks, at fixed distances r, and two light quarks is
studied on an anisotropic lattice. Excitations by operators emphasizing quark
or gluon degrees of freedom are examined. The maximum entropy method is applied
in the spectral analysis. These simulations ultimately aim at learning about
mechanisms of hadronic interaction.Comment: 5 pages, latex (uses espcrc2, psfig), contriubution to: Workshop on
Lattice Hadron Physics (LHP2001), Cairns, July 9-18, 200
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