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Article
Density functional theory of a trapped Bose gas with tunable scattering length: From weak-coupling to unitarity
We study an interacting Bose gas at T = 0 under isotropic harmonic confinement within Density Functional Theory in the Local Density approximation. The energy density functional, which spans the whole range of...
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Article
Dispersive Effects in the Unitary Fermi Gas
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 st...
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Article
Expansion or Contraction of Slit Pores Due to Gas Uptake
Adsorption inside a slit pore of flexible width w is explored, with a focus on how w varies as a function of the external pressure P of a gas in equilibrium with the adsorbate within the pore. The analysis is fir...
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Article
Two-step excitation of Rb atoms on He nanodroplets
We present the first sequential laser excitation of atom-doped helium nanodroplets. Rubidium atoms on the surface of helium nanodroplets are selectively excited with a continuous wave laser to the 52P1/2 state s...
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Article
Absorption Spectrum of Na Atoms Attached to Helium Nanodroplets
We present an analysis of the electronic 3p←3s excitation of Na atoms attached to 3He and 4He droplets. Once the ground state structure of the doped drops has been obtained within finite-range density functional ...
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Article
Helium in Nanoconfinement: Interplay Between Geometry and Wetting Behavior
This paper reviews the most recent research of adsorption of finite helium systems, performed in the frame of Density Functional theory. These comprehend the deposition and spreading of helium droplets on flat...
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Article
DC and AC Josephson effects with superfluid Fermi atoms across a Feshbach resonance
We show that both DC and AC Josephson effects with superfluid Fermi atoms in the BCS-BEC crossover can be described at zero temperature by a nonlinear Schrodinger equation (NLSE). By comparing our NLSE with me...
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Article
Novel Aspects of Wedge Filling by Liquid Helium
We discuss several features of the condensation of helium in linear wedges with Cs and Na walls, such as the existence of pre-filling jumps, and the relationship to prior calculations of the growth of 1D heli...
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Article
Alkali Atoms attached to 3He Nanodroplets
We have experimentally studied the electronic 3p ← 3s excitation of Na atoms attached to 3 He droplets by means of laser-induced fluorescence as well as beam depletion spectroscopy. From the similarities of the s...
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Article
Anomalous specific heat of 3He in 4He-coated FSM-16 mesopores
Recent experiments have found unusual behavior of the specific heat of 3He-4He mixtures within the regular porous material FSM-16. We analyze this problem with quantum density functional calculations of 4He, foll...
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Article
Anomalous Low Temperature Specific Heat of 3He Inside Nanotube Bundles
Helium atoms and hydrogen molecules can be strongly bound inside interstitial channels within bundles of carbon nanotubes. An exploration of the low energy and low temperature properties of 3He atoms is presented...
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Article
Structure of alkali dimers at the surface of liquid helium
Calculations are presented of the equilibrium configuration (“dimple”) of a Na2 or Li2 molecule absorbed on the surface of liquid3H e or liquid4He. The computed aimer binding energies are somewhat greater than th...
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Article
The binding of alkali atoms to the surfaces of liquid helium and hydrogen
Alkali atoms have been shown previously to have only unstable binding states inside liquid4He. We calculate the equilibrium configurations and binding energies of single alkali atoms near the liquid-vapor interfa...
