DPG Phi
Verhandlungen
Verhandlungen
DPG

Freiburg 2024 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MO: Fachverband Molekülphysik

MO 14: Atomic Clusters (joint session A/MO)

MO 14.8: Vortrag

Mittwoch, 13. März 2024, 16:15–16:30, HS 1015

Nonlinear effects in the charge fractionalization of critical chains — •Flávia Braga Ramos1, Imke Schneider1, Sebastian Eggert1, and Rodrigo Pereira21University of Kaiserslautern-Landau, Kaiserslautern, Germany — 2International Institute of Physics, Natal, Brazil

Using the density matrix renormalization group we investigate how a single particle excitation is accommodated in a strongly correlated chain using an out-of-equilibrium protocol. By creating an initial Gaussian wave packet with fixed momentum, we are able to control the regime of energy excitations. Remarkably, the late-time dynamics of the wave packet comprises up to three descendent humps: two counter-propagating low-energy modes and an additional high-energy contribution, whose existence depends on the energy scale set in the initial state. We interpret this unconventional charge fractionalization in terms of the nonlinear Luttinger liquid theory which has attracted great theoretical interest in recent years. Our results provide a new perspective to observe the dynamics of critical chains in the whole range of energy excitations which could potentially be realized in ultracold atomic gases.

Keywords: charge fractionalization; critical chains; nonlinear luttinger liquid; out-of-equilibrium properties

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2024 > Freiburg