2 papers
cond-mat.str-el2026
Phonon spectral functions of low-density polaron metals
Luis Walther, Alberto Nocera, Mona Berciu
We use the density matrix renormalization group (DMRG) to compute the phonon spectral function of a one-dimensional spinless Holstein model doped with a low but finite carrier conc…
cond-mat.stat-mech2025
Persistence of the Berezinskii-Kosterlitz-Thouless transition with long-range couplings
Luis Walther, Josef Willsher, Johannes Knolle
The Berezinskii-Kosterlitz-Thouless (BKT) transition is an archetypal example of a topological phase transition, which is driven by the proliferation of vortices. In this Letter, w…