Fermions in higher representations. Some results about SU(2) with adjoint fermions

Understand

We discuss the lattice formulation of gauge theories with fermions in arbitrary representations of the color group, and present the implementation of the RHMC algorithm for simulating dynamical Wilson fermions.

• A first dataset is presented for the SU(2) gauge theory with two fermions in the adjoint representation, which has been proposed as a possible technicolor candidate.
• Simulations are performed on 8^3x16 lattices, at fixed lattice spacing.
• The PCAC mass, the pseudoscalar, vector and axial meson masses, the pseudoscalar meson decay constant are computed.