Planckian dissipation per unit critical entropy as a coupling-free probe of the strange-metal bath
Year: 2026
Type: preprint
Abstract: Strange metals pair a resistivity linear in temperature with a specific heat $C/T$ rising logarithmically on cooling. We find that, if electrons scatter off a local critical bath, the coupling cancels in the ratio $Q$ of their coefficients, leaving two measurable numbers: how slowly the bath relaxes, seen in photoemission or optics, and the share of critical entropy that relaxes current. Baths form classes: $Q\le4.91$ for a conformal bath, as SYK models confirm; 9--15 for the Yukawa--SYK field; and far less for Kondo lattices. LSCO, at $Q\approx9$, exceeds the conformal bound, pointing to the Yukawa--SYK field.
Source: arXiv (Cornell University)
Authors: Škrgić, Dino, Stojkovic, Dejan
Institution: University at Buffalo, State University of New York
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7224133543