de Soto, FelicianoRoiesnel, C.2014-07-032014-07-032007Journal of High Energy Physics, 2007 (9), art. no. 0071029-847910.1088/1126-6708/2007/09/007http://hdl.handle.net/10433/1008This note presents a comparative study of various options to reduce the errors coming from the discretization of a Quantum Field Theory in a lattice with hypercubic symmetry. We show that it is possible to perform an extrapolation towards the continuum which is able to eliminate systematically the artifacts which break the O(4) symmetry.application/pdfenIOP PublishingLatticeHypercubic symmetryLattice quantum Field theoryjournal articleopen access