| 1. | Fazzini S.♦, Chudziński P., Dauer Ch.♦, Schneider I.♦, Eggert S.♦, Nonequilibrium floquet steady states of time-periodic driven luttinger liquids, PHYSICAL REVIEW LETTERS, ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.126.243401, Vol.126, pp.243401-1-7, 2021 Streszczenie: Time-periodic driving facilitates a wealth of novel quantum states and quantum engineering. The interplay of loquet states and strong interactions is particularly intriguing, which we study using timeperiodic fields in a one-dimensional quantum gas, modeled by a Luttinger liquid with periodically changing interactions. By developing a time-periodic operator algebra, we are able to solve and analyze the complete set of nonequilibrium steady states in terms of a Floquet-Bogoliubov ansatz and known analytic functions. Complex valued Floquet eigenenergies occur when integer multiples of the driving frequency approximately match twice the dispersion energy, which correspond to resonant states. In experimental systems of Lieb-Liniger bosons we predict a change from power-law correlations to dominant collective density wave excitations at the corresponding wave numbers as the frequency is lowered below a characteristic cutoff. Afiliacje autorów: | Fazzini S. | - | Technische Universität Kaiserslautern (DE) | | Chudziński P. | - | IPPT PAN | | Dauer Ch. | - | Technische Universität Kaiserslautern (DE) | | Schneider I. | - | Technische Universität Kaiserslautern (DE) | | Eggert S. | - | Technische Universität Kaiserslautern (DE) |
|  | 200p. |
