Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Stolpp, A"'
Autor:
Brink, Michael ten, Gräber, Stefan, Hopjan, Miroslav, Jansen, David, Stolpp, Jan, Heidrich-Meisner, Fabian, Blöchl, Peter E.
Publikováno v:
J. Chem. Phys. 156, 234109 (2022)
We benchmark a set of quantum-chemistry methods, including multitrajectory Ehrenfest, fewest-switches surface-hopping, and multiconfigurational-Ehrenfest dynamics, against exact quantum-many-body techniques by studying real-time dynamics in the Holst
Externí odkaz:
http://arxiv.org/abs/2203.07245
Autor:
Stolpp, Jan, Köhler, Thomas, Manmana, Salvatore R., Jeckelmann, Eric, Heidrich-Meisner, Fabian, Paeckel, Sebastian
Publikováno v:
Computer Physics Communications, Volume 269, December 2021, 108106
Lattice models consisting of high-dimensional local degrees of freedom without global particle-number conservation constitute an important problem class in the field of strongly correlated quantum many-body systems. For instance, they are realized in
Externí odkaz:
http://arxiv.org/abs/2011.07412
Publikováno v:
SciPost Phys. 10, 058 (2021)
Quantum lattice models with large local Hilbert spaces emerge across various fields in quantum many-body physics. Problems such as the interplay between fermions and phonons, the BCS-BEC crossover of interacting bosons, or decoherence in quantum simu
Externí odkaz:
http://arxiv.org/abs/2008.08466
Publikováno v:
Phys. Rev. B 101, 035134 (2020)
We study the Holstein model of spinless fermions, which at half-filling exhibits a quantum phase transition from a metallic Tomonaga-Luttinger liquid phase to an insulating charge-density-wave (CDW) phase at a critical electron-phonon coupling streng
Externí odkaz:
http://arxiv.org/abs/1911.01718
Publikováno v:
Phys. Rev. B 99, 155130 (2019)
The eigenstate thermalization hypothesis (ETH) is a successful theory that provides sufficient criteria for ergodicity in quantum many-body systems. Most studies were carried out for Hamiltonians relevant for ultracold quantum gases and single-compon
Externí odkaz:
http://arxiv.org/abs/1902.03247
Publikováno v:
Phys. Rev. B 99, 134413 (2019)
We study the magnetic field-dependence of the thermal conductivity due to magnetic excitations in frustrated spin-1/2 Heisenberg chains. Near the saturation field, the system is described by a dilute gas of weakly-interacting fermions (free-fermion f
Externí odkaz:
http://arxiv.org/abs/1809.08429
Autor:
Scherg, S., Kohlert, T., Herbrych, J., Stolpp, J., Bordia, P., Schneider, U., Heidrich-Meisner, F., Bloch, I., Aidelsburger, M.
Publikováno v:
Phys. Rev. Lett. 121, 130402 (2018)
We experimentally and numerically investigate the sudden expansion of fermions in a homogeneous one-dimensional optical lattice. For initial states with an appreciable amount of doublons, we observe a dynamical phase separation between rapidly expand
Externí odkaz:
http://arxiv.org/abs/1805.10990
Autor:
Stolpp, Jan, Köhler, Thomas, Manmana, Salvatore R., Jeckelmann, Eric, Heidrich-Meisner, Fabian, Paeckel, Sebastian
Publikováno v:
In Computer Physics Communications December 2021 269
Autor:
ten Brink, M., Gräber, S., Hopjan, M., Jansen, D., Stolpp, J., Heidrich-Meisner, F., Blöchl, P. E.
Publikováno v:
Journal of Chemical Physics; 6/21/2022, Vol. 156 Issue 23, p1-41, 41p
Publikováno v:
SciPost Physics, Vol 10, Iss 3, p 058 (2021)
Quantum lattice models with large local Hilbert spaces emerge across various fields in quantum many-body physics. Problems such as the interplay between fermions and phonons, the BCS-BEC crossover of interacting bosons, or decoherence in quantum simu
Externí odkaz:
https://doaj.org/article/d9b9c1e76d3846d6864ec7b405fdf288