Background Field Functional Renormalization Group for Absorbing State Phase Transitions

Abstract

We present a functional renormalization group approach for the active to inactive phase transition in directed percolation type systems, in which the transition is approached from the active, finite density phase. By expanding the effective potential for the density field around its minimum, we obtain a background field action functional, which serves as a starting point for the functional renormalization group approach. Due to the presence of the background field, the corresponding non-perturbative flow equations yield remarkably good estimates for the critical exponents of the directed percolation universality class, even in low dimensions.

References in corpus (6)

• Exact evolution equation for the effective potential
• Applications of Field-Theoretic Renormalization Group Methods to Reaction-Diffusion Problems
• Directed percolation criticality in turbulent liquid crystals
• Absorbing state phase transition with competing quantum and classical fluctuations
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Cited by in corpus (7)

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• Noise resilience in adaptive and symmetric monitored quantum circuits