Konrad Kockler

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hep-th2026

Yang-Lee edge singularity at $O (\partial^{4})$ from the functional renormalization group: revised analysis

Konrad Kockler, Jan M. Pawlowski, Vladimir V. Skokov

We determine the critical exponents of the Yang-Lee edge singularity as continuous functions of dimension using the functional renormalization group, retaining all operators at sec…

hep-th2025

Critical scaling for spectral functions

Konrad Kockler, Jan M. Pawlowski, Jonas Wessely

We study real-time scalar $ϕ^{4}$ -theory in 2+1 dimensions near criticality. Specifically, we compute the single-particle spectral function and that of the $s$ -channel four-point fun…

Yang-Lee edge singularity at O(∂4) from the functional renormalization group: revised analysis

Critical scaling for spectral functions

Yang-Lee edge singularity at $O (\partial^{4})$ from the functional renormalization group: revised analysis