Results 1 to 10 of about 2,411 (56)
Correlated quantum transport of density wave electrons. [PDF]
Phys Rev Lett, 2012 Recently observed Aharonov-Bohm quantum interference of period h/2e in charge density wave rings strongly suggest that correlated density wave electron transport is a cooperative quantum phenomenon. The picture discussed here posits that quantum solitons
Miller JH +3 more
europepmc +2 more sources
Emission of Solitons From an Obstacle Moving in the Bose-Einstein Condensate
Frontiers in Physics, 2021 Dark solitons dynamically generated from a potential moving in a one-dimensional Bose-Einstein condensate are displayed. Based on numerical simulations of the Gross-Pitaevskii equation, we find that the moving obstacle successively emits a series of ...
Yu Song +3 more
doaj +1 more source
Phase diagrams of the Bose-Hubbard model at finite temperature [PDF]
, 2009 The phase transitions in the Bose-Hubbard model are investigated. A single-particle Green's function is calculated in the random phase approximation and the formalism of the Hubbard operators is used.
Mysakovych, T. S., Stasyuk, I. V.
core +2 more sources
New Journal of Physics, 2015 We numerically generate and then study the basic properties of dark soliton-like excitations in a dipolar gas confined in a quasi one-dimensional trap. These excitations, although very similar to dark solitons in a gas with contact interaction, interact ...
Krzysztof Pawłowski +1 more
doaj +1 more source
Hydrodynamics of local excitations after an interaction quench in 1D cold atomic gases
New Journal of Physics, 2016 We discuss the hydrodynamic approach to the study of the time evolution—induced by a quench—of local excitations in one dimension. We focus on interaction quenches: the considered protocol consists of creating a stable localized excitation propagating ...
Fabio Franchini +2 more
doaj +1 more source
In situ observation of optomechanical Bloch oscillations in an optical cavity
New Journal of Physics, 2016 It is shown experimentally that a Bose–Einstein condensate inside an optical cavity, operating in the regime of strong cooperative coupling, responds to an external force by an optomechanical Bloch oscillation, which can be directly observed in the light
H Keßler +4 more
doaj +1 more source
Robustness of discrete semifluxons in closed Bose–Hubbard chains
New Journal of Physics, 2016 We present the properties of the ground state and low-energy excitations of Bose–Hubbard chains with a geometry that varies from open to closed and with a tunable twisted link.
A Gallemí +5 more
doaj +1 more source
Thermometry precision in strongly correlated ultracold lattice gases
New Journal of Physics, 2015 The precise knowledge of the temperature of an ultracold lattice gas simulating a strongly correlated system is a question of both fundamental and technological importance. Here, we address such question by combining tools from quantum metrology together
M Mehboudi +3 more
doaj +1 more source
Stable double-pair skyrmion in an antiferromagnetic F = 1 Bose–Einstein condensate
New Journal of Physics, 2017 The recent experimental realization of spin-orbit coupling (SOC) in spin-1 ultracold atoms opens up an interesting avenue for exploring new quantum states and novel quantum phenomena in large-spin systems.
Yong-Kai Liu, Shi-Jie Yang
doaj +1 more source
Tunneling of a composite particle: Effects of intrinsic structure [PDF]
, 2007 We consider simple models of tunneling of an object with intrinsic degrees of freedom. This important problem was not extensively studied until now, in spite of numerous applications in various areas of physics and astrophysics.
Ahsan N +9 more
core +1 more source