Improved Superlinks for Higher Spin Operators
arXiv:hep-lat/0611018 · doi:10.1103/PhysRevD.76.074502
Abstract
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.
27 pages, 10 tables, 8 figures, uses RevTex4, minor corrections and further development, reunitarized superlinks, as accepted by PRD
References in corpus (7)
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- String models of glueballs and the spectrum of SU(N) gauge theories in 2+1 dimensions
- Lattice Calculation of Glueball Matrix Elements
- High Spin Glueballs from the Lattice
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