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Nonthermal fixed points and the functional renormalization group

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arxiv 0809.5208 v2 pith:FBEC4OVW submitted 2008-09-30 hep-th cond-mat.otherhep-phnucl-th

J. Berges , G. Hoffmeister This is my paper
classification hep-thcond-mat.otherhep-phnucl-th
keywords fixedpointsequilibriumfunctionalgroupnonthermalrenormalizationthermal
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Nonthermal fixed points represent basic properties of quantum field theories, in addition to vacuum or thermal equilibrium fixed points. The functional renormalization group on a closed real-time path provides a common framework for their description. For the example of an O(N) symmetric scalar theory it reveals a hierarchy of fixed point solutions, with increasing complexity from vacuum and thermal equilibrium to nonequilibrium.

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  1. Critical scaling for spectral functions

    hep-th 2025-06 conditional novelty 5.0 of 10

    A spectral renormalisation group computation extracts the anomalous dimension eta ~ 0.1 for 2+1-dimensional phi^4 theory in the scaling regime, within a truncated approximation.

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