10.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Sapienza University of RomeIT156 papers
- Scuola Internazionale Superiore di Studi AvanzatiIT146 papers
- University of InsubriaIT88 papers
- University of MilanIT85 papers
- University of TrentoIT85 papers
- Politecnico di TorinoIT78 papers
- University of FlorenceIT74 papers
- University of GenoaIT69 papers
- Centre National de la Recherche ScientifiqueFR65 papers
- The Abdus Salam International Centre for Theoretical Physics (ICTP)IT65 papers
- National Research CouncilLK58 papers
- University of SalernoIT56 papers
177 papers · 1 filter
Collective oscillations of a trapped Fermi gas near a Feshbach resonance
Sandro Stringari
The frequencies of the collective oscillations of a harmonically trapped Fermi gas interacting with large scattering lengths are calculated at zero temperature using hydrodynamic t…
Rotational dynamics of CO solvated in small He clusters: a quantum Monte Carlo study
Paolo Cazzato, Stefano Paolini, Saverio Moroni +1
The rotational dynamics of CO single molecules solvated in small He clusters (CO@He_N) has been studied using Reptation Quantum Monte Carlo for cluster sizes up to N=30. Our result…
Instabilities of a Bose-Einstein condensate in a periodic potential: an experimental investigation
M. Cristiani, O. Morsch, N. Malossi +4
By accelerating a Bose-Einstein condensate in a controlled way across the edge of the Brillouin zone of a 1D optical lattice, we investigate the stability of the condensate in the…
Elementary excitations in the cyclic molecular nanomagnet Cr8
O. Waldmann, T. Guidi, S. Carretta +2
Combining recent and new inelastic neutron scattering data for the molecular cyclic cluster Cr8 produces a deep understanding of the low lying excitations in bipartite antiferromag…
Dynamics of the spin-boson model with a structured environment
M. Thorwart, E. Paladino, M. Grifoni
We investigate the dynamics of the spin-boson model when the spectral density of the boson bath shows a resonance at a characteristic frequency but behaves Ohmically at small f…
Macroscopic evidence of quantum coherent oscillations of the total spin in the Mn-[3x3] molecular nanomagnet
S. Carretta, P. Santini, E. Liviotti +4
Molecular nanomagnets, besides promising to open new frontiers in technology, have attracted huge interest in the scientific community because they can exhibit the phenomenon known…
Nonlinear Tight-Binding Approximation for Bose-Einstein Condensates in a Lattice
Augusto Smerzi, Andrea Trombettoni
The dynamics of Bose-Einstein condensates trapped in a deep optical lattice is governed by a discrete nonlinear equation (DNL). Its degree of nonlinearity and the intersite hopping…
Photoelasticity of crystalline and amorphous silica from first principles
D. Donadio, M. Bernasconi, F. Tassone
Based on density-functional perturbation theory we have computed from first principles the photoelastic tensor of few crystalline phases of silica at normal conditions and high pre…
Adiabatic Compression of Soliton Matter Waves
F. Kh. Abdullaev, Mario Salerno
The evolution of atomic solitary waves in Bose-Einstein condensate (BEC) under adiabatic changes of the atomic scattering length is investigated. The variations of amplitude, width…
Stability of the iterative solutions of integral equations as one phase freezing criterion
R. Fantoni, G. Pastore
A recently proposed connection between the threshold for the stability of the iterative solution of integral equations for the pair correlation functions of a classical fluid and t…
Mixtures of Bosonic and Fermionic Atoms in Optical Lattices
Alexander Albus, Fabrizio Illuminati, Jens Eisert
We discuss the theory of mixtures of Bosonic and Fermionic atoms in periodic potentials at zero temperature. We derive a general Bose--Fermi Hubbard Hamiltonian in a one--dimension…
Generating functionals, consistency, and uniqueness in the integral equation theory of liquids
R. Fantoni, G. Pastore
We discuss and illustrate through numerical examples the relations between generating functionals, thermodynamic consistency (in particular the virial-free energy one), and uniquen…
Anisotropy and Ising-like transition of the S=5/2 two-dimensional Heisenberg antiferromagnet Mn-formate di-Urea
Alessandro Cuccoli, Tommaso Roscilde, Valerio Tognetti +2
Recently reported measurements of specific heat on the compound Mn-formate di-Urea (Mn-f-2U) by Takeda et al. [Phys. Rev. B 63, 024425 (2001)] are considered. As a model to describ…
Delocalizing effect of the Hubbard repulsion for electrons on a two-dimensional disordered lattice
Bhargavi Srinivasan, Giuliano Benenti, Dima L. Shepelyansky
We study numerically the ground-state properties of the repulsive Hubbard model for spin-1/2 electrons on two-dimensional lattices with disordered on-site energies. The projector q…
Cooling dynamics of ultracold two-species Fermi-Bose mixtures
Carlo Presilla, Roberto Onofrio
We compare strategies for evaporative and sympathetic cooling of two-species Fermi-Bose mixtures in single-color and two-color optical dipole traps. We show that in the latter case…
Spectroscopy of Dark Soliton States in Bose-Einstein Condensates
K. Bongs, S. Burger, D. Hellweg +7
Experimental and numerical studies of the velocity field of dark solitons in Bose-Einstein condensates are presented. The formation process after phase imprinting as well as the pr…
Structure, rotational dynamics, and superfluidity of small OCS-doped He clusters
Saverio Moroni, Antonio Sarsa, Stefano Fantoni +2
The structural and dynamical properties of OCS molecules solvated in Helium clusters are studied using reptation quantum Monte Carlo, for cluster sizes n=3-20 He atoms. Computer si…
Magneto-Optical Kerr Effect of Iron Thin Films on Paramagnetic Substrates
A. Debernardi, I. Galanakis, M. Alouani +1
First principles calculations of the magnetic properties and the magneto-optical Kerr effect (MOKE) of iron thin films epitaxially grown on the [001] surface of paramagnetic metals…
Ground-state properties of trapped Bose-Fermi mixtures: role of exchange-correlation
Alexander P. Albus, Fabrizio Illuminati, Martin Wilkens
We introduce Density Functional Theory for inhomogeneous Bose-Fermi mixtures, derive the associated Kohn-Sham equations, and determine the exchange-correlation energy in local dens…
Dynamics of liquid He-4 in confined geometries from Time-Dependent Density Functional calculations
Luigi Giacomazzi, Flavio Toigo, Francesco Ancilotto
We present numerical results obtained from Time-Dependent Density Functional calculations of the dynamics of liquid He-4 in different environments characterized by geometrical conf…
Critical temperature of Bose-Einstein condensation in trapped atomic Bose-Fermi mixtures
Alexander P. Albus, Stefano Giorgini, Fabrizio Illuminati +1
We calculate the shift in the critical temperature of Bose-Einstein condensation for a dilute Bose-Fermi mixture confined by a harmonic potential to lowest order in both the Bose-B…
Bose-Einstein Condensation on inhomogeneous networks: mesoscopic aspects versus thermodynamic limit
P. Buonsante, R. Burioni, D. Cassi +1
We study the filling of states in a pure hopping boson model on the comb lattice, a low dimensional discrete structure where geometrical inhomogeneity induces Bose-Einstein condens…
Landau damping of transverse quadrupole oscillations of an elongated Bose-Einstein condensate
M. Guilleumas, L. P. Pitaevskii
We study the interaction between low-lying transverse collective oscillations and thermal excitations of an elongated Bose-Einstein condensate by means of perturbation theory. We c…
Quantum Monte Carlo study of the 3D-1D crossover for a trapped Bose gas
G. E. Astrakharchik, S. Giorgini
We investigate the cross-over from three to one dimension in a Bose gas confined in highly anisotropic traps. By using Quantum Monte-Carlo techniques, we solve the many-body Schrod…