Zobrazeno 1 - 10
of 397
pro vyhledávání: '"Ancilotto, F"'
Within Density Functional Theory, we have investigated the coalescence dynamics of two superfluid helium nanodroplets hosting vortex lines in different relative orientations, which are drawn towards each other by the Van der Waals mutual attraction.
Externí odkaz:
http://arxiv.org/abs/2110.10612
Publikováno v:
Phys. Rev. B 104, 094509 (2021)
Within Density Functional Theory, we have studied the interplay between vortex arrays and capillary waves in spinning prolate He-4 droplets made of several thousands of helium atoms. Surface capillary waves are ubiquitous in prolate superfluid He-4 d
Externí odkaz:
http://arxiv.org/abs/2104.06712
Publikováno v:
Phys. Rev. A 100, 063636 (2019)
We consider a homogeneous heteronuclear Bose mixture with contact interactions at the mean-field collapse, i.e. with interspecies attraction equal to the mean geometrical intraspecies repulsion. We show that the Lee-Huang-Yang (LHY) energy functional
Externí odkaz:
http://arxiv.org/abs/1908.00804
Autor:
D'Errico, C., Burchianti, A., Prevedelli, M., Salasnich, L., Ancilotto, F., Modugno, M., Minardi, F., Fort, C.
Publikováno v:
Phys. Rev. Research 1, 033155 (2019)
We report on the formation of heteronuclear quantum droplets in an attractive bosonic mixture of 41K and 87Rb. We observe long-lived self-bound states, both in free space and in an optical waveguide. In the latter case, the dynamics under the effect
Externí odkaz:
http://arxiv.org/abs/1908.00761
Formation of vortex rings around moving spherical objects in superfluid He-4 at 0 K is modeled by time-dependent density functional theory. The simulations provide detailed information of the microscopic events that lead to vortex ring emission throu
Externí odkaz:
http://arxiv.org/abs/1807.08464
Publikováno v:
The European Physical Journal B 91 (4), 70 (2018)
We benchmark the ground state energies and the density profiles of atomic repulsive Fermi gases in optical lattices computed via Density Functional Theory (DFT) against the results of diffusion Monte Carlo (DMC) simulations. The main focus is on a ha
Externí odkaz:
http://arxiv.org/abs/1801.02095
Publikováno v:
Phys. Rev. A 87, 013637 (2013)
We study the real-time motion of a microscopic object in a cold Fermi gas at unitary conditions by using an extended Thomas-Fermi density functional approach. We find that spontaneous creation of singly quantized vortex-antivortex pairs occurs as a c
Externí odkaz:
http://arxiv.org/abs/1301.5133
Publikováno v:
Journal of Low Temperature Physics, vol. 171, 329-340 (2013)
We investigate within density functional theory various physical properties of the zero-temperature unitary Fermi gas which critically depend on the presence of a dispersive gradient term in the equation of state. First, we consider the unitary Fermi
Externí odkaz:
http://arxiv.org/abs/1210.2437
Publikováno v:
Phys. Rev. A 85, 063612 (2012)
Motivated by a recent experiment [Phys. Rev. Lett. 106, 150401 (2011)] we simulate the collision between two clouds of cold Fermi gas at unitarity conditions by using an extended Thomas-Fermi density functional. At variance with the current interpret
Externí odkaz:
http://arxiv.org/abs/1206.0568
Autor:
Fechner, L., Gruener, B., Sieg, A., Callegari, C., Ancilotto, F., Stienkemeier, F., Mudrich, M.
Highly excited states of rubidium (Rb) atoms attached to helium (He) nanodroplets are studied by two-photon ionization spectroscopy in combination with electron and ion imaging. Photoion spectra and angular distributions are in good agreement with a
Externí odkaz:
http://arxiv.org/abs/1109.2298