Extending a stochastic renormalization-group method for tensor group field theories to non-equilibrium, this paper finds that fluctuation-dissipation-violating couplings become large near finite-scale singularities, implying instability of equilibrium dynamics.
Rovelli.Quantum gravity
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Stochastic dynamics for group field theories II: Methods for nonequilibrium renormalization group
Extending a stochastic renormalization-group method for tensor group field theories to non-equilibrium, this paper finds that fluctuation-dissipation-violating couplings become large near finite-scale singularities, implying instability of equilibrium dynamics.