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![]() Title:Flow Equation Approach to Stochastic Quantisation Conference:IMPMS 2026 Tags:flow equation, renormalisation group, SPDEs and Stochastic quantisation Abstract: We present a construction of the measure of the fractional $\Phi^4$ Euclidean quantum field theory on $\mathbb{R}^3$ in the full subcritical regime via parabolic stochastic quantisation. Our approach is based on the use of a truncated flow equation for the effective description of the model at sufficiently small scales and on coercive estimates for the nonlinear stochastic partial differential equation describing the interacting field. The constructed measure is invariant under translations, reflection positive and has quartic exponential tails. Flow Equation Approach to Stochastic Quantisation ![]() Flow Equation Approach to Stochastic Quantisation | ||||
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