Quantum 2025 – scientific programme
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MON: Monday Contributed Sessions
MON 15: Many-Body Quantum Dynamics II
MON 15.6: Talk
Monday, September 8, 2025, 17:45–18:00, ZHG003
Transport in quantum wires: Fractional charges and non-linear Luttinger liquids — •Sebastian Eggert1, Flávia B. Ramos1, Imke Schneider1, and Rodrigo G. Pereira2 — 1University of Kaiserslautern-Landau — 2Universidade Federal do Rio Grande do Norte, Natal
This talk will address the question about how a right-moving unit charge propagates along an interacting spinless wire. Using adaptive time-dependent DMRG, we observe that the charge spontaneously separates into three distinct parts: a fractional charge with free particle dynamics and left- and right-moving parts. As we will show the results are in full agreement with the non-linear Luttinger theory and provide deep insights into the universal correlated nature of these emergent particles. Corresponding out-of-equilibrium transport measurements offer a direct method to extract the interaction parameters governing correlations in the system even at higher energies.
Keywords: non-linear Luttinger liquids; fractional charges; non-equilibrium transport; quantum wires; spin chains