2 papers
cond-mat.str-el2025
Dielectric breakdown of strongly correlated insulators in one dimension: Universal formula from non-Hermitian sine-Gordon theory
Kazuaki Takasan, Masaya Nakagawa, Norio Kawakami
Application of a strong electric field to insulators induces a finite current. This phenomenon is called dielectric breakdown and is known as a fundamental nonequilibrium and nonli…
cond-mat.str-el2024
Magnetic Doublon Bound States in the Kondo Lattice Model
Roman Rausch, Michael Potthoff, Norio Kawakami
We present a novel pairing mechanism for electrons, mediated by magnons. These paired bound states are termed ``magnetic doublons''. Applying numerically exact techniques (full dia…