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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Large orders and strong-coupling limit in functional renormalization
Mikhail N Semeikin1, Kay Jörg Wiese1
1Sorbonne Université, ENS, PSL, Laboratoire de Physique de l'Ecole Normale Supérieure, CNRS-, Université Paris Cité, 24 rue Lhomond, 75005 Paris, France.
None:
We study the large-order behavior of the functional renormalization group (FRG). For a model in dimension zero, we establish Borel summability for a large class of microscopic couplings. Writing the derivatives of FRG as contour integrals, we express the Borel transform as well as the original series as integrals. Taking the strong-coupling limit in this representation, we show that all short-ranged microscopic disorders flow to the same universal fixed point. Our results are relevant for FRG in disordered elastic systems.
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