Improved Superlinks for Higher Spin Operators

Details Improved Superlinks for Higher Spin Operators Improved Superlinks for Higher Spin Operators

2006-11-14

arxiv.org/abs/hep-lat/0611018v3

Phys.Rev.D76:074502,2007

Physics

High Energy Physics

High Energy Physics - Lattice

27 pages, 10 tables, 8 figures, uses RevTex4, minor corrections and further development, reunitarized superlinks, as accepted

Scientific paper

10.1103/PhysRevD.76.074502

Traditional smearing or blocking techniques serve well to increase the overlap of operators onto physical states but allow for links orientated only along lattice axes. Recent attempts to construct more general propagators have shown promise at resolving the higher spin states but still rely on iterative smearing. We present a new method of superlink construction which creates meared links from (sparse) matrix multiplications, allowing for gluonic propagation in arbitrary directions. As an application and example, we compute the positive-parity, even-spin glueball spectrum up to spin 6 for pure gauge SU(2) at beta = 6, L = 16, in D = 2+1 dimensions.

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