Zobrazeno 1 - 10
of 301
pro vyhledávání: '"Dalfovo, F."'
Autor:
Liu, I. -K., Donadello, S., Lamporesi, G., Ferrari, G., Gou, S. -C., Dalfovo, F., Proukakis, N. P.
Publikováno v:
Communications Physics, 1, 24 (2018)
The formation of an equilibrium quantum state from an uncorrelated thermal one through the dynamical crossing of a phase transition is a central question of non-equilibrium many-body physics. During such crossing, the system breaks its symmetry by es
Externí odkaz:
http://arxiv.org/abs/1712.08074
Autor:
Bisset, R. N., Serafini, S., Iseni, E., Barbiero, M., Bienaimé, T., Lamporesi, G., Ferrari, G., Dalfovo, F.
Publikováno v:
Phys. Rev. A 96, 053605 (2017)
Boundaries strongly affect the behavior of quantized vortices in Bose-Einstein condensates, a phenomenon particularly evident in elongated cigar-shaped traps where vortices tend to orient along a short direction to minimize energy. Remarkably, contri
Externí odkaz:
http://arxiv.org/abs/1705.09102
Publikováno v:
Phys. Rev. A 88, 043639 (2013)
We present numerical calculations of the snake instability in a Fermi superfluid within the Bogoliubov-de Gennes theory of the BEC to BCS crossover using the random phase approximation complemented by time-dependent simulations. We examine the snakin
Externí odkaz:
http://arxiv.org/abs/1307.3717
We investigate the response of superfluid Fermi gases to rapid changes of the three-dimensional s-wave scattering length a by solving the time-dependent Bogoliubov-de Gennes equations. In general the magnitude of the order parameter |\Delta| performs
Externí odkaz:
http://arxiv.org/abs/1209.2025
Publikováno v:
New J. Phys. 14, 023044 (2012)
We study soliton collisions and the decay of solitons into sound in superfluid Fermi gases across the Bose-Einstein condensate to Bardeen-Cooper-Schrieffer (BEC-BCS) crossover by performing numerical simulations of the time-dependent Bogoliubov-de Ge
Externí odkaz:
http://arxiv.org/abs/1109.6444
We study soliton oscillations in a trapped superfluid Fermi gas across the Bose-Einstein condensate to Bardeen-Cooper-Schrieffer (BEC-BCS) crossover. We derive an exact equation relating the phase jump across the soliton to its energy, and hence obta
Externí odkaz:
http://arxiv.org/abs/1011.4450
Autor:
Lucioni, E., Deissler, B., Tanzi, L., Roati, G., Modugno, M., Zaccanti, M., Larcher, M., Dalfovo, F., Inguscio, M., Modugno, G.
Publikováno v:
Phys. Rev. Lett. 106, 230403 (2011)
We study the transport dynamics of matter-waves in the presence of disorder and nonlinearity. An atomic Bose-Einstein condensate that is localized in a quasiperiodic lattice in the absence of atom-atom interaction shows instead a slow expansion with
Externí odkaz:
http://arxiv.org/abs/1011.2362
Publikováno v:
Phys. Rev. A 80, 053602 (2009)
We investigate the problem of an ultracold atomic gas in the superfluid phase flowing in the presence of a potential barrier or a periodic potential. We use a hydrodynamic scheme in the local density approximation (LDA) to obtain an analytic expressi
Externí odkaz:
http://arxiv.org/abs/0907.0621
The small oscillations of solitons in 2D Bose-Einstein condensates are investigated by solving the Kadomtsev-Petviashvili equation which is valid when the velocity of the soliton approaches the speed of sound. We show that the soliton is stable and t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607160
We theoretically investigate the dynamic properties of a Bose-Einstein condensate in a toroidal trap. A periodic modulation of the transverse confinement is shown to produce a density pattern due to parametric amplification of phonon pairs. By imagin
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605183