Physical observables from boundary artifacts: scalar glueball in Yang-Mills theory
arXiv:1509.07959 · doi:10.1007/JHEP02(2016)134
Abstract
By relating the functional averages of a generic scalar operator in simulations with Open (O) and Periodic (P) boundary conditions (BCs) respectively for lattice gauge theory, we show that the scalar glueball mass and the glueball to vacuum matrix element can be extracted very efficiently from the former. Numerical results are compared with those extracted from the two point function of the time slice energy density (both PBC and OBC). The scaling properties of the mass and the matrix element are studied with the help of Wilson (gradient) flow.
15 pages, section 2 revised, a figure and an appendix added. Conclusions unchanged. To be published in JHEP
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Cited by in corpus (5)
- Lattice Gluon and Ghost Propagators, and the Strong Coupling in Pure SU(3) Yang-Mills Theory: Finite Lattice Spacing and Volume Effects
- Proof of the renormalizability of the gradient flow
- Glueball spectroscopy in lattice QCD using gradient flow
- On the equivalence between the Wilson flow and stout-link smearing
- Effects of boundary conditions and gradient flow in 1+1 dimensional lattice theory