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Akademický článek

Dephasing–rephasing dynamics of one-dimensional tunneling quasicondensates

Autor: A Tononi, F Toigo, S Wimberger, A Cappellaro, L Salasnich

Publikováno v: New Journal of Physics, Vol 22, Iss 7, p 073020 (2020)

We study the quantum tunneling of two one-dimensional quasi-condensates made of alkali-metal atoms, considering two different tunneling configurations: side-by-side and head-to-tail. After deriving the quasiparticle excitation spectrum, we discuss th

Externí odkaz: https://doaj.org/article/0dba1954f62a4ad3a66c59f288009413

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Composite bosons in the two-dimensional BCS-BEC crossover from Gaussian fluctuations

Autor: Luca Salasnich, F. Toigo

We study Gaussian fluctuations of the zero-temperature attractive Fermi gas in the 2D BCS-BEC crossover showing that they are crucial to get a reliable equation of state in the BEC regime of composite bosons, bound states of fermionic pairs. A low-mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45184fd2764a264af62dfdb8b9941cd0
http://hdl.handle.net/11577/3195811

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Interfacial Water on Cl- and H-Terminated Si(111) Surfaces from First-Principles Calculations

Autor: Francesco Ancilotto, F. Toigo, Pier Luigi Silvestrelli

Publikováno v: 110 (2006): 12022–12028.
info:cnr-pdr/source/autori:Silvestrelli, PL; Toigo, F; Ancilotto, F/titolo:Interfacial water on Cl-and H-terminated Si(111) surfaces from first-principles calculations/doi:/rivista:/anno:2006/pagina_da:12022/pagina_a:12028/intervallo_pagine:12022–12028/volume:110

The properties of interfacial water on Cl- and H-terminated Si( 111) surfaces are investigated using a first-principles approach and characterized by means of energetic analysis combined with hydrogen-bond counting. The interaction of water with both

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0251d2258218c372e3ca5b35b555aae
https://doi.org/10.1021/jp0618781

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Acetylene on Si(111) from computer simulations

Autor: Carlo Maria Bertoni, C. A. Pignedoli, C. Sbraccia, F. Toigo, Alessandra Catellani, Pier Luigi Silvestrelli, Francesco Ancilotto, R. Di Felice

Publikováno v: Computer physics communications 169 (2005): 32–35.
info:cnr-pdr/source/autori:Sbraccia C., Pignedoli C.A., Catellani A., Di Felice R., Silvestrelli P.L., Toigo F., Ancilotto F., Bertoni C.M./titolo:Acetylene on Si(111) from computer simulations/doi:/rivista:Computer physics communications/anno:2005/pagina_da:32/pagina_a:35/intervallo_pagine:32–35/volume:169

The interaction between the acetylene molecule (C 2 H 2 ) and the Si(111)-(7×7) surface is studied with the combined use of ab initio and empirical methods. Several possible chemisorption configurations are explored, which may be helpful to rational

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::943034c6362004df79312a31d2defebd
https://doi.org/10.1016/j.cpc.2005.03.009

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Polarization of a quasi two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling: a variational study

Autor: Luca Salasnich, Pier Luigi Silvestrelli, F. Toigo, G. Lombardi, Alberto Ambrosetti

Publikováno v: Physical review : A : atomic, molecular and optical physics

Motivated by the remarkable experimental control of synthetic gauge fields in ultracold atomic systems, we investigate the effect of an artificial Rashba spin-orbit coupling on the spin polarization of a two-dimensional repulsive Fermi gas. By using

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35ef1fc46b540190a8c7bbab1b8604f1

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Superfluidity, sound velocity, and quasicondensation in the two-dimensional BCS-BEC crossover

Autor: Luca Salasnich, Pieralberto Marchetti, F. Toigo

We study finite-temperature properties of a two-dimensional superfluid made of ultracold alkali-metal atoms in the BCS-BEC crossover. We investigate the region below the critical temperature $T_{BKT}$ of the Berezinskii-Kosterlitz-Thouless phase tran

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a69d738951a6c0263b7e24c09a27f8f
http://hdl.handle.net/11577/2811306

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Critical velocity, vortex shedding, and drag in a unitary Fermi superfluid

Autor: Francesco Ancilotto, Luca Salasnich, F. Toigo

Publikováno v: Physical review. A 87 (2013). doi:10.1103/PhysRevA.87.013637
info:cnr-pdr/source/autori:Ancilotto, F.; Salasnich, L.; Toigo, F./titolo:Critical velocity, vortex shedding, and drag in a unitary Fermi superfluid/doi:10.1103%2FPhysRevA.87.013637/rivista:Physical review. A/anno:2013/pagina_da:/pagina_a:/intervallo_pagine:/volume:87

We study the real-time motion of a microscopic object in a cold Fermi gas at unitary conditions by using an extended Thomas-Fermi density functional approach. We find that spontaneous creation of singly quantized vortex-antivortex pairs occurs as a c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33bc036d03099c2fe0434a275173a921
http://www.cnr.it/prodotto/i/317965

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ELECTRONIC PROPERTIES AND MAGNETISM OF Rh AND Pd CLUSTERS

Autor: Jinlong Yang, F. Toigo, Kelin Wang

Publikováno v: Surface Review and Letters. :323-328

The electronic structure and magnetism of Rh43, Rh55, Pd43, and Pd55 clusters with possible icosahedral and octahedral geometries are studied using the discrete-variational local-spin-density functional method. All clusters are shown to have magnetic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5645fce1259dc9e5f0ee1388132b137
https://doi.org/10.1142/s0218625x96000590

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Finite temperature effects in two-mode bosonic Josephson junctions

Autor: F. Toigo, G. Mazzarella, Luca Salasnich

We analyze the effects of the temperature on a bosonic Josephson junction realized with ultracold and dilute atoms in a double-well potential. Starting from the eigenstates of the two-site Bose-Hubbard Hamiltonian, we calculate the coherence visibili

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db8acc1296aa2ebfd67746a8cda96915
http://hdl.handle.net/11577/2525308

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Quantum-tunneling dynamics of a spin-polarized Fermi gas in a double-well potential

Autor: Mario Salerno, F. Toigo, Luca Salasnich, G. Mazzarella

We study the exact dynamics of a one-dimensional spin-polarized gas of fermions in a double-well potential at zero and finite temperature. Despite the system is made of non-interacting fermions, its dynamics can be quite complex, showing strongly ape

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70ba4e6f80a4ea06472a90b5a1702792
http://hdl.handle.net/11577/2450379

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