New Fixed Points from Melonic Interactions [Neue Fixpunkte aus melonischen Wechselwirkungen]

Juliano, L; Thürigen, J

Abstract

Generalizations of vector field theories to tensors allow to similarly apply large-N techniques but find a richer though often still tractable structure. However, the potential of such tensor theories has not been fully exploited since only a symmetry-reduced ``isotropic'' part of their phase space has been studied so far. Here we present for the first time the richness of the tensorial phase space applying the functional renormalization group to tensor fields of rank rr in the cyclic-melonic potential approximation including the flow of anomalous dimensions. Due to a decoupling of the flow equations of the rr couplings at given order, we find non-Gaussian fixed points in any regime of 0