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Sandro Stringari

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Sandro Stringari
Alma materUniversity of Pisa and Scuola Normale Superiore
Scientific career
FieldsTheoretical physics, Nuclear physics, and Ultracold atoms
InstitutionsUniversity of Trento
Academic advisorsBruno Touschek, Renzo Leonardi and David Brink

Sandro Stringari is an Italian theoretical physicist, who has contributed to the theory of quantum many-body physics, including atomic nuclei, quantum liquids and ultra-cold atomic Bose and Fermi gases. He has developed in a systematic way the sum rule approach to the collective behavior of interacting systems.

Biography

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After the studies at the University of Pisa and at the Scuola Normale Superiore Pisa, completed in 1972 and supervised by Bruno Touschek, he moved to Trento and Oxford under the supervision of Renzo Leonardi and David Brink, respectively. In the years 1978/79 and 1985/86, invited by Oriol Bohigas Marti, he has worked at the Institut de Physique Nucleaire in Orsay. In 1990, he became full professor at the University of Trento, where he currently teaches an undergraduate course on quantum mechanics and a graduate course on quantum gases and superfluidity.[1] In 2002, he established in Trento the Center on Bose –Einstein Condensation, founded by the Istituto Nazionale per la Fisica della Materia (INFM), and now part of CNR. In the year 2004/2005, invited by Claude Cohen-Tannoudji, he held the European Chair at the Collège de France, in Paris. In 2010, he was recipient of the 5 years ERC Advanced Grant "Quantum Gases beyond equilibrium". Since 2011, he is corresponding member of the Accademia Nazionale dei Lincei.

Main scientific contributions

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In the first period of his scientific career Sandro Stringari focused on the magnetic properties of atomic nuclei and on the isospin degree of freedom, developing the innovative sum rule approach to the collective excitations.[2]

Starting from the 80’s he oriented his interests in the direction of atomic clusters and quantum liquids. Major contributions of this period are the study of the evaporation mechanism of helium clusters [3] and the T=0 extension of the Hohenberg-Mermin-Wagner theorem.[4]

His interests in the physics of Bose-Einstein condensates (BEC) started with the workshop on Bose-Einstein Condensation (BEC), known as the "Levico conference", organized in 1993 at Levico.[5] After the first experimental realization of BEC in 1995, he developed the formalism of superfluid hydrodynamics to describe the collective oscillations of a harmonically trapped BECs, providing analytic predictions for their frequencies.[6] This contribution had a major impact on the first generation of experiments on ultra cold quantum gases and influenced an important line of theoretical work. Later contributions to the dynamics of trapped quantum gases, and to their rotational, superfluid and thermodynamic properties are summarized in the review papers on Bose-Einstein condensates [7] and Fermi gases [8] as well as in the book on Bose-Einstein Condensation and Superfluidity [9] written in collaboration with Lev Pitaevskii.

References

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  1. ^ "UniTrento - Sandro Stringari - Teaching". Retrieved 24 February 2019.
  2. ^ Lipparini, E.; Stringari, S. (1989). "Sum rules and giant resonances in nuclei". Physics Reports. 175 (3–4). Elsevier BV: 103–261. Bibcode:1989PhR...175..103L. doi:10.1016/0370-1573(89)90029-x. ISSN 0370-1573.
  3. ^ Brink, D. M.; Stringari, S. (1990). "Density of states and evaporation rate of helium clusters". Zeitschrift für Physik D. 15 (3). Springer Science and Business Media LLC: 257–263. Bibcode:1990ZPhyD..15..257B. doi:10.1007/bf01437187. ISSN 0178-7683. S2CID 84178148.
  4. ^ Pitaevskii, L.; Stringari, S. (1991). "Uncertainty principle, quantum fluctuations, and broken symmetries". Journal of Low Temperature Physics. 85 (5–6). Springer Science and Business Media LLC: 377–388. Bibcode:1991JLTP...85..377P. doi:10.1007/bf00682193. ISSN 0022-2291. S2CID 121848601.
  5. ^ Bose Einstein Condensation Proceedings of the 1993 Levico International Workshop, A. Griffin, D. Snoke and S. Stringari eds. (Cambridge University Press, 1995)
  6. ^ Stringari, S. (1996-09-16). "Collective Excitations of a Trapped Bose-Condensed Gas". Physical Review Letters. 77 (12). American Physical Society (APS): 2360–2363. arXiv:cond-mat/9603126. Bibcode:1996PhRvL..77.2360S. doi:10.1103/physrevlett.77.2360. ISSN 0031-9007. PMID 10061934. S2CID 981505.
  7. ^ Dalfovo, Franco; Giorgini, Stefano; Pitaevskii, Lev P.; Stringari, Sandro (1999-04-01). "Theory of Bose-Einstein condensation in trapped gases". Reviews of Modern Physics. 71 (3). American Physical Society (APS): 463–512. arXiv:cond-mat/9806038. Bibcode:1999RvMP...71..463D. doi:10.1103/revmodphys.71.463. ISSN 0034-6861. S2CID 55787701.
  8. ^ Giorgini, Stefano; Pitaevskii, Lev P.; Stringari, Sandro (2008-10-02). "Theory of ultracold atomic Fermi gases". Reviews of Modern Physics. 80 (4). American Physical Society (APS): 1215–1274. arXiv:0706.3360. Bibcode:2008RvMP...80.1215G. doi:10.1103/revmodphys.80.1215. ISSN 0034-6861. S2CID 117755089.
  9. ^ Bose-Einstein Condensation and Superfluidity
    Lev Pitaevskii and Sandro Stringari, , Int. Series of Monographs on Physics (Bose-Einstein Condensation and Superfluidity. Oxford University Press. 2016. p. 576. ISBN 9780198758884.)
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