9 papers
Finite-temperature crossover from coherent magnons to energy superdiffusion in the PXP model
Shengtao Jiang, Jean-Yves Desaules, Marko Ljubotina +1
The PXP chain was recently shown to exhibit superdiffusive energy transport with Kardar-Parisi-Zhang-like scaling, , joining a growing number of spin chains with this…
Pairing around a Single Dirac Point: A Unifying View of Kohn-Luttinger Superconductivity in Chern Bands, Quarter Metals, and Topological Surface States
Omid Tavakol, Thomas Scaffidi
Superconductivity of a single two-dimensional Dirac fermion offers a natural route to topological superconductivity. While usually considered extrinsic -- arising from proximity to…
Asymptotic freedom, lost: Complex conformal field theory in the two-dimensional nonlinear sigma model and its realization in Heisenberg spin chains
Christopher Yang, Thomas Scaffidi
The two-dimensional nonlinear sigma model (NLSM) is asymptotically free for : it exhibits neither a nontrivial fixed point nor spontaneous symmetry-breaking. Here we sh…
AC Fingerprints of 2D Electron Hydrodynamics: Superdiffusion and Drude Weight Suppression
Davis Thuillier, Thomas Scaffidi
Clean two-dimensional Fermi liquids are now known to exhibit an intermediate \emph{tomographic} regime, between ballistic and Navier--Stokes transport, caused by the anomalously sl…
Krylov Winding and Emergent Coherence in Operator Growth Dynamics
Rishik Perugu, Bryce Kobrin, Michael O. Flynn +1
The operator wavefunction provides a fine-grained description of quantum chaos and of the irreversible growth of simple operators into increasingly complex ones. Remarkably, at fin…
Multipolar Fermi Surface Deformations in SrRuO Probed by Resistivity and Sound Attenuation: A Window into Electron Viscosity and the Collision Operator
Davis Thuillier, Sayak Ghosh, B. J. Ramshaw +1
Recent developments in electron hydrodynamics have demonstrated the importance of considering the full structure of the electron-electron scattering operator, which encodes a seque…