Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Cattapan, G."'
Autor:
Cattapan, G., Lotti, P.
We investigate the occurrence of bound states in the continuum (BIC's) in serial structures of quantum dots coupled to an external waveguide, when some characteristic length of the system is changed. By resorting to a multichannel scattering-matrix a
Externí odkaz:
http://arxiv.org/abs/0806.4898
Autor:
Cattapan, G., Lotti, P.
We consider T--shaped, two--dimensional quantum waveguides containing attractive or repulsive impurities with a smooth, realistic shape, and study how the resonance behavior of the total conductance depends upon the strength of the defect potential a
Externí odkaz:
http://arxiv.org/abs/0710.1943
Autor:
Cattapan, G., Lotti, P.
We have studied the behavior of the S-matrix poles near threshold for quantum waveguides coupled to a cavity with a defect. We emphasize the occurrence of both dominant and shadow poles on the various sheets of the energy Riemann surface, and show th
Externí odkaz:
http://arxiv.org/abs/0706.3783
Autor:
Cattapan, G., Maglione, E.
Publikováno v:
Phys.Rev. C61 (2000) 067301
Single-particle resonance parameters and wave functions in spherical and deformed nuclei are determined through analytic continuation in the potential strength. In this method, the analyticity of the eigenvalues and eigenfunctions of the Schroedinger
Externí odkaz:
http://arxiv.org/abs/nucl-th/0001037
Publikováno v:
Phys.Rev.C57:1588-1594,1998
The proton analyzing power Ay0 and the deuteron tensor analyzing power T20 are evaluated for the pd <-> pi+ t process, in the energy region around and above the Delta resonance. These calculations extend a previous analysis of the excitation function
Externí odkaz:
http://arxiv.org/abs/nucl-th/9801027
Autor:
Cattapan, G., Canton, L.
Publikováno v:
Few Body Syst. 17 (1994) 163-183
In order to approach the pion--multinucleon problem, we have found it convenient to reformulate the general N--body theory starting from the fully unclusterized (i.e., N <- N) amplitude. If we rewrite such an amplitude in terms of new unknowns which
Externí odkaz:
http://arxiv.org/abs/nucl-th/9404026
Autor:
Canton, L., Cattapan, G.
Publikováno v:
Phys.Rev.C50:2761-2767,1994
We derive the dynamical equations which consistently couple the four--body ($\pi$NNN) system to the underlying three--nucleon system. Our treatment can be considered the proper generalization of the Afnan--Blankleider equations for the coupled NN--$\
Externí odkaz:
http://arxiv.org/abs/nucl-th/9312016
Autor:
Cattapan, G., Lotti, P.
Publikováno v:
In Physica E: Low-dimensional Systems and Nanostructures March 2014 57:118-125
Autor:
Cattapan, G., Lotti, P.
Publikováno v:
In Physica E: Low-dimensional Systems and Nanostructures September 2012 46:77-83
Spin-polarized transport through a laterally coupled Aharonov–Bohm ring with two magnetic impurities
Autor:
Cattapan, G., Lotti, P.
Publikováno v:
In Physica E: Low-dimensional Systems and Nanostructures April-May 2012 44(7-8):1454-1460