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Efimov Spectrum in Bosonic Systems with Increasing Number of Particles

Kievsky, A, Gattobigio, M and Timofeyuk, Natalia (2014) Efimov Spectrum in Bosonic Systems with Increasing Number of Particles Few-Body Systems, 55 (8-10). pp. 945-948.

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Abstract

It is well-known that three-boson systems show the Efimov effect when the two-body scattering length a is large with respect to the range of the two-body interaction. This effect is a manifestation of a discrete scaling invariance (DSI). In this work we study DSI in the N-body system by analysing the spectrum of N identical bosons obtained with a pairwise gaussian interaction close to the unitary limit. We consider different universal ratios such as EN 0/E3 0 and EN 1/EN 0, with EN i being the energy of the ground (i = 0) and first-excited (i = 1) state of the system, for N ≤ 16. We discuss the extension of the Efimov radial law, derived by Efimov for N = 3, to general N. © 2013 Springer-Verlag Wien.

Item Type: Article
Authors :
NameEmailORCID
Kievsky, AUNSPECIFIEDUNSPECIFIED
Gattobigio, MUNSPECIFIEDUNSPECIFIED
Timofeyuk, NataliaN.Timofeyuk@surrey.ac.ukUNSPECIFIED
Date : 1 January 2014
Identification Number : 10.1007/s00601-013-0773-3
Copyright Disclaimer : The final publication is available at Springer via http://dx.doi.org/10.1007/s00601-013-0773-3
Depositing User : Symplectic Elements
Date Deposited : 28 Jun 2017 07:57
Last Modified : 04 Jul 2017 07:56
URI: http://epubs.surrey.ac.uk/id/eprint/810204

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