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  1. Article

    Open Access

    Supervised machine learning of ultracold atoms with speckle disorder

    We analyze how accurately supervised machine learning techniques can predict the lowest energy levels of one-dimensional noninteracting ultracold atoms subject to the correlated disorder due to an optical spec...

    S. Pilati, P. Pieri in Scientific Reports (2019)

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  2. No Access

    Article

    Vortex arrays in neutral trapped Fermi gases through the BCS–BEC crossover

    Vortex arrays in type-II superconductors reflect the translational symmetry of an infinite system. There are cases, however, such as ultracold trapped Fermi gases and the crust of neutron stars, where finite-s...

    S. Simonucci, P. Pieri, G. Calvanese Strinati in Nature Physics (2015)

  3. No Access

    Article

    Quantum Monte Carlo study of the indirect Pauli exclusion effect in Bose-Fermi mixtures

    We study the momentum distributions of a three-dimensional resonant Bose-Fermi mixture in the molecular limit at zero temperature. For concentration of the bosons with respect to the fermions less or equal to ...

    G. Bertaina, A. Guidini, P. Pieri in The European Physical Journal Special Topics (2015)

  4. No Access

    Article

    Energy of strongly attractive Bose-Fermi mixtures

    We discuss how approximate theories for Bose-Fermi mixtures recover in the molecular limit the expected expression for Fermi-Fermi mixtures of molecules and unpaired fermions. In particular, we compare the ene...

    A. Guidini, E. Fratini, G. Bertaina… in The European Physical Journal Special Topi… (2015)

  5. Article

    Observation of pseudogap behaviour in a strongly interacting Fermi gas

    An ultracold gas of strongly interacting fermions exhibits a pseudogap phase in which pairs of fermions exist above the superfluid transition, but lack the phase coherence of a superfluid.

    J. P. Gaebler, J. T. Stewart, T. E. Drake, D. S. **, A. Perali, P. Pieri… in Nature Physics (2010)

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  6. No Access

    Article

    From superconducting fluctuations to the bosonic limit in the response functions above the critical temperature

    The density, current, and spin response functions are investigated above the critical temperature Tc for a system of three-dimensional fermions interacting via an attractive short-range potential, as the strength...

    G.C. Strinati, P. Pieri, C. Lucheroni in The European Physical Journal B - Condense… (2002)

  7. No Access

    Article

    Two-dimensional dilute Bose gas in the normal phase

    We consider a two-dimensional dilute Bose gas above its superfluid transition temperature. We show that the t-matrix approximation corresponds to the leading set of diagrams in the dilute limit, provided the t...

    P. Pieri, G.C. Strinati, I. Tifrea in The European Physical Journal B - Condense… (2001)

  8. No Access

    Article

    Size shrinking of composite bosons for increasing density in the BCS to Bose-Einstein crossover

    We consider a system of fermions in the continuum case at zero temperature, in the strong-coupling limit of a short-range attraction when composite bosons form as bound-fermion pairs. We examine the density de...

    N. Andrenacci, P. Pieri, G.C. Strinati in The European Physical Journal B - Condense… (2000)

  9. No Access

    Chapter and Conference Paper

    An introduction to the Hubbard model

    In these notes we review some of the basic features of the 2D Hubbard model, thought of as the appropriate model for the description of the Cu — O planes in the cuprate superconductors. We discuss breifly the wea...

    E. Ercolessi, G. Morandi, P. Pieri in Strongly Correlated Magnetic and Supercond… (1997)