3 papers
quant-ph2025
Non-stabilizerness as a Diagnostic of Criticality and Exceptional Points in Non-Hermitian Spin Chains
Cătălin Paşcu Moca, Doru Sticlet, Balázs Dóra
We investigate non-stabilizerness, also known as ``magic,'' to understand criticality and exceptional points in non-Hermitian quantum many-body systems. Our focus is on parity-time…
cond-mat.str-el2025
Hot but Coherent: Doublons at Infinite Temperature in the Hubbard chain
Cătălin Paşcu Moca, Balázs Dóra, Gergely Zaránd
We investigate the spectral properties and the dynamics of doublons in the one-dimensional Hubbard model at infinite temperature. Using a Chebyshev expansion approach formulated in…
cond-mat.str-el2025
Quantum Coherence in a Maximally Hot Hubbard Chain
Cătălin Paşcu Moca, Ovidiu I. Patu, Balázs Dóra +1
We present a detailed study of the real-time dynamics and spectral properties of the one-dimensional fermionic Hubbard model at infinite temperature. Using tensor network simulatio…