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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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52 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…
Interacting fermions in quasi-one-dimensional harmonic traps
G. E. Astrakharchik, D. Blume, S. Giorgini +1
Quasi-one-dimensional (quasi-1d) two-component Fermi gases with effectively attractive and repulsive interactions are characterized for arbitrary interaction strength. The ground-s…
Central charges and boundary fields for two dimensional dilatonic black holes
N. Pinamonti, L. Vanzo
In this paper we first show that within the Hamiltonian description of general relativity, the central charge of a near horizon asymptotic symmetry group is zero, and therefore tha…
Performance of quantum phase gates with cold trapped atoms
A. Negretti, T. Calarco, M. A. Cirone +1
We examine the performance of a quantum phase gate implemented with cold neutral atoms in microtraps, when anharmonic traps are employed and the effects of finite temperature are a…
One-loop effective potential from higher-dimensional AdS black holes
Guido Cognola, Emilio Elizalde, Sergio Zerbini
We study the quantum effects in a brane-world model in which a positive constant curvature brane universe is embedded in a higher-dimensional bulk AdS black hole, instead of the us…
Electromagnetic break-up of nuclei with A = 3 - 7
G. Orlandini
This talk contains a short review of some of the progresses made in the last three years in the calculations of electromagnetic cross sections of light nuclei up to A=7. Since many…
Longitudinal response functions of 3H and 3He
Victor D. Efros, Winfried Leidemann, Giuseppina Orlandini +1
Trinucleon longitudinal response functions R_L(q,omega) are calculated for q values up to 500 MeV/c. These are the first calculations beyond the threshold region in which both thre…
Two-body Photodisintegration of He with Full Final State Interaction
Sofia Quaglioni, Nir Barnea, Victor D. Efros +2
The cross sections of the processes He()H and He()He are calculated taking into account the full final state interaction via the Lorentz integral transfor…
Role of microstructure in porous silicon gas sensors for NO
Zeno Gaburro, Paolo Bettotti, Massimo Saiani +4
Electrical conductivity of porous silicon fabricated form heavily doped p-type silicon is very sensitive to NO, even at concentrations below 100 ppb. However, sensitivity stron…
Opposite effects of NO on electrical injection in porous silicon gas sensors
Zeno Gaburro, Claudio J. Oton, Lorenzo Pavesi +1
The electrical conductance of porous silicon fabricated with heavily doped p-type silicon is very sensitive to NO. A concentration of 10 ppb can be detected by monitoring the c…
Effect of P-wave interaction in 6He and 6Li photoabsorption
Sonia Bacca, Nir Barnea, Winfried Leidemann +1
The total photoabsorption cross sections of six-body nuclei are calculated including complete final state interaction via the Lorentz Integral Transform method. The effect of nucle…
Helicity-dependent generalized parton distributions in constituent quark models
S. Boffi, B. Pasquini, M. Traini
Helicity-dependent generalized parton distributions of the nucleon are derived from the overlap representation of generalized parton distributions using light-cone wave functions o…
Superfluidity of the 1D Bose gas
Iacopo Carusotto, Yvan Castin
We have investigated the superfluid properties of a ring of weakly interacting and degenerate 1D Bose gas at thermal equilibrium with a rotating vessel. The conventional definition…
Superfluid Dynamics of a Bose-Einstein Condensate in a Periodic Potential
C. Menotti, A. Smerzi, A. Trombettoni
We investigate the superfluid properties of a Bose-Einstein condensate (BEC) trapped in a one dimensional periodic potential. We study, both analytically (in the tight binding limi…
Quantum Monte Carlo study of quasi-one-dimensional Bose gases
G. E. Astrakharchik, D. Blume, S. Giorgini +1
We study the behavior of quasi-one-dimensional (quasi-1d) Bose gases by Monte Carlo techniques, i.e., by the variational Monte Carlo, the diffusion Monte Carlo, and the fixed-node…
Upper limits on stray force noise for LISA
L. Carbone, A. Cavalleri, R. Dolesi +4
We have developed a torsion pendulum facility for LISA gravitational reference sensor ground testing that allows us to put significant upper limits on residual stray forces exerted…
Loss and revival of phase coherence in a Bose-Einstein condensate moving through an optical lattice
F. Nesi, M. Modugno
We investigate the phase coherence of a trapped Bose-Einstein condensate that undergoes a dynamical superfluid-insulator transition in the presence of a one-dimensional optical lat…
Scissors modes of two-component degenerate gases: Bose-Bose and Bose-Fermi mixtures
M. Rodriguez, P. Pedri, P. Törmä +1
We investigate the scissors modes in binary mixtures of degenerate dilute quantum gases, for both Bose-Bose and Bose-Fermi mixtures. For the latter we consider both the superfluid…
Variational Monte Carlo study of the ground state properties and vacancy formation energy of solid para-H2 using a shadow wave function
Francesco Operetto, Francesco Pederiva
A Shadow Wave Function (SWF) is employed along with Variational Monte Carlo techniques to describe the ground state properties of solid molecular para-hydrogen. The study has been…
Effective action for scalar fields and generalised zeta-function regularisation
Guido Cognola, Sergio Zerbini
Motivated by the study of quantum fields in a Friedman-Robertson-Walker (FRW) spacetime, the one-loop effective action for a scalar field defined in the ultrastatic manifold $R\tim…
Creation of discrete solitons and observation of the Peierls-Nabarro barrier in Bose-Einstein Condensates
V. Ahufinger, A. Sanpera, P. Pedri +2
We analyze the generation and mobility of discrete solitons in Bose-Einstein condensates confined in an optical lattice under realistic experimental conditions. We discuss first th…
Possibilities for Measurement and Compensation of Stray DC Electric Fields Acting on Drag-Free Test Masses
W. J. Weber, L. Carbone, A. Cavalleri +4
DC electric fields can combine with test mass charging and thermal dielectric voltage noise to create significant force noise acting on the drag-free test masses in the LISA (Laser…
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…
Irregular Dynamics in a One-Dimensional Bose System
G. P. Berman, F. Borgonovi, F. M. Izrailev +1
We study many-body quantum dynamics of -interacting bosons confined in a one-dimensional ring. Main attention is payed to the transition from the mean-field to Tonks-Girardeau r…