Projects per year
Abstract
A novel method for nonperturbative renormalization of lattice operators is introduced, which lends itself to the calculation of renormalization factors for nonsinglet as well as singlet operators. The method is based on the FeynmanHellmann relation, and involves computing twopoint correlators in the presence of generalized background fields arising from introducing additional operators into the action. As a first application, and test of the method, we compute the renormalization factors of the axial vector current A mu and the scalar density S for both nonsinglet and singlet operators for Nf = 3 flavors of SLiNC fermions. For nonsinglet operators, where a meaningful comparison is possible, perfect agreement with recent calculations using standard threepoint function techniques is found. (C) 2014 The Authors. Published by Elsevier B.V.
Original language  English 

Pages (fromto)  3035 
Number of pages  6 
Journal  Physics Letters B 
Volume  740 
DOIs  
Publication status  Published  5 Jan 2015 
Projects
 1 Finished

Particle Theory at the Higgs Centre
Ball, R., Berera, A., Boyle, P., CallisonBurch, C., Del Debbio, L., Gardi, E., Kennedy, A., O'Connell, D., Zwicky, R., Berera, A., Boyle, P., Buckley, A., Del Debbio, L., Gardi, E., Horsley, R., Kennedy, A., Kenway, R., O'Connell, D., Smillie, J. & Zwicky, R.
1/10/14 → 30/09/18
Project: Research