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Four fermion interactions appear in many models of Beyond Standard Modelphysics. In Technicolour and composite Higgs models Standard Model fermionmasses can be generated by four fermion terms. They are also expected to modifythe dynamics of the new strongly interacting sector. In particular intechnicolour models it has been suggested that they can be used to breakinfrared conformality and produce a walking theory with a large mass anomalousdimension. We study the SU(2) gauge theory with 2 adjoint fermions and achirally symmetric four fermion term. We demonstrate chiral symmetry breakingat large four fermion coupling and study the phase diagram of the model.

Adjoint SU(2) with Four Fermion Interactions