Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Greschner, S."'
Autor:
Zhou, T. -W., Cappellini, G., Tusi, D., Franchi, L., Parravicini, J., Repellin, C., Greschner, S., Inguscio, M., Giamarchi, T., Filippone, M., Catani, J., Fallani, L.
Publikováno v:
Science 381, 427-430 (2023). This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science on 27 July 2023
The Hall effect, which originates from the motion of charged particles in magnetic fields, has deep consequences for the description of materials, extending far beyond condensed matter. Understanding such an effect in interacting systems represents a
Externí odkaz:
http://arxiv.org/abs/2205.13567
Autor:
Greschner, S., Heidrich-Meisner, F.
Publikováno v:
Phys. Rev. A 97, 033619 (2018)
We study the ground-state physics of a single-component Haldane model on a hexagonal two-leg ladder geometry with a particular focus on strongly interacting bosonic particles. We concentrate our analysis on the regime of less than one particle per un
Externí odkaz:
http://arxiv.org/abs/1710.08109
Autor:
Greschner, S., Vekua, T.
Publikováno v:
Phys. Rev. Lett. 119, 073401 (2017)
Two-leg bosonic ladders with flux harbor a remarkable vortex-hole duality between the weak-coupling vortex lattice superfluids and strong-coupling charge-density-wave crystals. The strong-coupling crystalline states, which are realized in the vicinit
Externí odkaz:
http://arxiv.org/abs/1704.06517
Publikováno v:
Phys. Rev. A 94, 063628 (2016)
We study the quantum phases of bosons with repulsive contact interactions on a two-leg ladder in the presence of a uniform Abelian gauge field. The model realizes many interesting states, including Meissner phases, vortex-fluids, vortex-lattices, cha
Externí odkaz:
http://arxiv.org/abs/1610.02435
Publikováno v:
Phys. Rev. Lett. 115, 190402 (2015)
The interplay between spontaneous symmetry breaking in many-body systems, the wavelike nature of quantum particles and lattice effects produces an extraordinary behavior of the chiral current of bosonic particles in the presence of a uniform magnetic
Externí odkaz:
http://arxiv.org/abs/1504.06564
Autor:
Piraud, M., Heidrich-Meisner, F., McCulloch, I. P., Greschner, S., Vekua, T., Schollwoeck, U.
Publikováno v:
Phys. Rev. B 91, 140406(R), 2015
We establish the phase diagram of the strongly-interacting Bose-Hubbard model defined on a two-leg ladder geometry in the presence of a homogeneous flux. Our work is motivated by a recent experiment [Atala et al., Nature Phys. 10, 588 (2014)], which
Externí odkaz:
http://arxiv.org/abs/1409.7016
Magnetoelectric coupling in helical multiferroics allows to steer spin order with electric fields. Here we show theoretically that in a helical multiferroic chain quantum information processing as well as quantum phases are highly sensitive to electr
Externí odkaz:
http://arxiv.org/abs/1311.3439
Publikováno v:
Phys. Rev. Lett. 113, 215303 (2014)
We show that density-dependent synthetic gauge fields may be engineered by combining periodically modu- lated interactions and Raman-assisted hopping in spin-dependent optical lattices. These fields lead to a density- dependent shift of the momentum
Externí odkaz:
http://arxiv.org/abs/1311.3150
Publikováno v:
Phys. Rev. B 88, 195101 (2013)
We study, both numerically and analytically, the finite size scaling of the fidelity susceptibility \chi_{J} with respect to the charge or spin current in one-dimensional lattice models, and relate it to the low-frequency behavior of the correspondin
Externí odkaz:
http://arxiv.org/abs/1308.4611
Publikováno v:
Phys. Rev. A 88, 043616 (2013)
Under the influence of an external magnetic field and spin-changing collisions, the band insulator (BI) state of one-dimensional (1D) s-wave repulsively interacting 4-component fermions at half-filling transforms into Mott insulator (MI) states with
Externí odkaz:
http://arxiv.org/abs/1305.0894