2-loop additive mass renormalization with clover fermions and Symanzik improved gluons
| dc.creator | Skouroupathis, A. | |
| dc.creator | Constantinou, M. | |
| dc.creator | Panagopoulos, H. | |
| dc.date | 2006-11-02 | |
| dc.date.accessioned | 2026-07-07T10:41:32Z | |
| dc.date.available | 2026-07-07T10:41:32Z | |
| dc.description | We calculate the critical value of the hopping parameter, kappa_c, in Lattice QCD, up to two loops in perturbation theory. We employ the Sheikholeslami-Wohlert (clover) improved action for Wilson fermions and the Symanzik improved gluon action for 4- and 6-link loops. The quantity which we study is a typical case of a vacuum expectation value resulting in an additive renormalization; as such, it is characterized by a power (linear) divergence in the lattice spacing, and its calculation lies at the limits of applicability of perturbation theory. Our results are polynomial in c_{SW} (clover parameter) and cover a wide range of values for the Symanzik coefficients c_i. Furthermore, the dependence on the number of colors N and the number of fermionic flavors N_f is shown explicitly. In order to compare our results to non perturbative evaluations of kappa_c coming from Monte Carlo simulations, we employ an improved perturbation theory method applied to improved actions. | |
| dc.description | 7 pages, 6 figures, Poster presented at XXIV International Symposium on Lattice Field Theory (Lattice 2006, Tucson, Arizona) | |
| dc.identifier | https://arxiv.org/abs/hep-lat/0611005 | |
| dc.identifier | http://arxiv.org/abs/hep-lat/0611005 | |
| dc.identifier | PoSLAT2006:162,2006 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/181646 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | 2-loop additive mass renormalization with clover fermions and Symanzik improved gluons | |
| dc.type | text |