Coulomb-free 1 S 0 p − p scattering length from the quasi-free p + d → p + p + n reaction and its relation to universality

Autor: Aurora Tumino, Giuseppe G. Rapisarda, Marco La Cognata, Alessandro Oliva, Alejandro Kievsky, Carlos A. Bertulani, Giuseppe D’Agata, Mario Gattobigio, Giovanni L. Guardo, Livio Lamia, Dario Lattuada, Rosario G. Pizzone, Stefano Romano, Maria L. Sergi, Roberta Spartá, Michele Viviani

Publikováno v: Communications Physics, Vol 6, Iss 1, Pp 1-9 (2023)

Abstract The Coulomb-free 1 S 0 proton-proton (p-p) scattering length relies heavily on numerous and distinct theoretical techniques to remove the Coulomb contribution. Here, it has been determined from the half-off-the-energy-shell p-p scattering cr

Externí odkaz: https://doaj.org/article/d5aa49e172614e56a4dfa7d6c3bdb9f8

Gaussian Parametrization of Efimov Levels: Remnants of Discrete Scale Invariance

Autor: Paolo Recchia, Alejandro Kievsky, Luca Girlanda, Mario Gattobigio

Publikováno v: Few Body Syst.
Few Body Syst., 2022, 63 (1), pp.8. ⟨10.1007/s00601-021-01704-2⟩

International audience; The Efimov window, or universal window, is a particular energy region in which few-body systems are loosely bound. Many characteristics of those systems are universal; their properties are largely independent of the particular

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10a82ec70db89d5a45a25cc94d142e9f
https://hal.archives-ouvertes.fr/hal-03500454

Many-body energy density functional

Autor: G. Orlandini, A. Kievsky, Mario Gattobigio

Publikováno v: Phys.Rev.A
Phys.Rev.A, 2021, 104 (3), pp.L030801. ⟨10.1103/PhysRevA.104.L030801⟩

International audience; The Hohenberg-Kohn theorem and the Kohn-Sham equations, which are at the basis of the density-functional theory, are reformulated in terms of a particular many-body density, which is translational and Galilean invariant and th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5638efde8770da187ad29dc7681cb85b
https://hal.archives-ouvertes.fr/hal-03273343

Few bosons to many bosons inside the unitary window: A transition between universal and nonuniversal behavior

Autor: Natalia Timofeyuk, Mario Gattobigio, A. Kievsky, Bruno Juliá-Díaz, Artur Polls

Publikováno v: Phys.Rev.A
Phys.Rev.A, 2020, 102 (6), pp.063320. ⟨10.1103/PhysRevA.102.063320⟩

Universal behavior in few-boson systems close to the unitary limit, where two bosons become unbound, has been intensively investigated in recent years both experimentally and theoretically. In this particular region, called the unitary window, detail

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd46fd91597e3fa5fc20476c158fb2a5
https://hal.archives-ouvertes.fr/hal-02894428

Embedding nuclear physics inside the unitary-limit window

Autor: Mario Gattobigio, Michele Viviani, A. Kievsky

Publikováno v: Physical Review C
Physical Review C, American Physical Society, 2019, 100 (3), pp.034004. ⟨10.1103/PhysRevC.100.034004⟩
Phys.Rev.C
Phys.Rev.C, 2019, 100 (3), pp.034004. ⟨10.1103/PhysRevC.100.034004⟩

International audience; The large values of the singlet and triplet scattering lengths locate the two-nucleon system close to the unitary limit, the limit in which these two values diverge. As a consequence, the system shows a continuous scale invari

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53a486ba65e8f43806472c93fd5b4d55
https://hal.archives-ouvertes.fr/hal-02088704