Finite volume effects in SU(2) with two adjoint fermions

Preprint number: CP3-Origins-2011-35 and DIAS-2011-27
Authors: Luigi Del Debbio (University of Edinburgh), Biagio Lucini (Swansea University), Agostino Patella (CERN), Claudio Pica (CP3-Origins, SDU), and Antonio Rago (University of Plymouth)
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SU(2) with two Dirac flavors in the adjoint representation (also called Minimal Walking Technicolor) is believed to be IR conformal. A possible way to see this is through the behavior of the spectrum. After deforming the theory with a mass for the fermions, one observes that a mass gap is generated. The masses of particles vanish in the chiral limit, while their ratios stay finite. In order to trust this analysis one has to relay on the infinite volume extrapolation. I will discuss the finite volume effects, investigated by varying the size of the lattice and by changing the boundary conditions for the fields.