Zobrazeno 1 - 10
of 340
pro vyhledávání: '"Eggert, Sebastian"'
Autor:
Bonkhoff, Martin, Jägering, Kevin, Hu, Shijie, Pelster, Axel, Eggert, Sebastian, Schneider, Imke
We study one-dimensional (1D) lattice anyons with extended Hubbard interactions at unit filling using bosonization and numerical simulations. The behavior can be continuously tuned from Bosonic to Fermionic behavior by adjusting the topological excha
Externí odkaz:
http://arxiv.org/abs/2410.00089
The spin-$3/2$ chain is a versatile prototypical platform for the study of competition between different kinds of magnetic orders, with the objective of obtaining a deeper understanding of the corresponding quantum phase transitions. In this work, we
Externí odkaz:
http://arxiv.org/abs/2408.11394
We investigate the generic transport in a one-dimensional strongly correlated fermionic chain beyond linear response. Starting from a Gaussian wave packet with positive momentum on top of the ground state, we find that the numerical time evolution sp
Externí odkaz:
http://arxiv.org/abs/2406.05009
Autor:
Reilly, Jarrod T., Jäger, Simon B., Wilson, John Drew, Cooper, John, Eggert, Sebastian, Holland, Murray J.
We present a simple and effective method to create highly entangled spin states on a faster timescale than that of the commonly employed one-axis twisting (OAT) model. We demonstrate that by periodically driving the Dicke Hamiltonian at a resonance f
Externí odkaz:
http://arxiv.org/abs/2310.07694
Publikováno v:
Phys. Rev. A 110, L010202 (2024)
We develop and study an atom-only description of the Dicke model with time-periodic couplings between atoms and a dissipative cavity mode. The cavity mode is eliminated giving rise to effective atom-atom interactions and dissipation. We use this effe
Externí odkaz:
http://arxiv.org/abs/2310.00046
Publikováno v:
Phys. Rev. B 108, 155134 (2023)
One-dimensional anyonic models of the Hubbard type show intriguing ground-state properties, effectively transmuting between Bose-Einstein and Fermi-Dirac statistics. The simplest model that one can investigate is an anyonic version of the bosonic Jos
Externí odkaz:
http://arxiv.org/abs/2306.00073
Publikováno v:
Phys. Rev. A 108, 023307 (2023)
We investigate the transport properties of a Fermi-Hubbard chain with an impurity which is formed by a site with a periodically modulated chemical potential. We determine the momentum resolved transmission through this impurity in dependence of the m
Externí odkaz:
http://arxiv.org/abs/2305.16743
Publikováno v:
Phys. Rev. B 106, 155104 (2022)
The asymptotic dynamical correlation functions in one-dimensional spin chains are described by power-laws. The corresponding exponents characterize different bulk and boundary critical behavior. We present novel results for the logarithmic contributi
Externí odkaz:
http://arxiv.org/abs/2208.00019
We investigate the Fermi-Hubbard model with a Floquet-driven impurity in the form of a local time-oscillating potential. For strong attractive interactions a stable formation of pairs is observed. These pairs show a completely different transmission
Externí odkaz:
http://arxiv.org/abs/2112.07964
Autor:
Fedorova, Zlata, Dauer, Christoph, Sidorenko, Anna, Eggert, Sebastian, Kroha, Johann, Linden, Stefan
Publikováno v:
Phys. Rev. Research 3, 013260 (2021)
We demonstrate transport rectification in a hermitian Hamiltonian quantum ratchet by a dissipative, dynamic impurity. While the bulk of the ratchet supports transport in both directions, the properly designed loss function of the local impurity acts
Externí odkaz:
http://arxiv.org/abs/2010.16150