Zobrazeno 1 - 10
of 1 209
pro vyhledávání: '"Carbonell, J. A."'
Publikováno v:
Eur. Phys. J. C (2021) 81:50
In the Wick-Cutkosky model, where two scalar massive constituents interact by means of the exchange of a scalar massless particle, the Bethe-Salpeter equation has solutions of two types, called "normal" and "abnormal". In the non-relativistic limit,
Externí odkaz:
http://arxiv.org/abs/2101.03566
Publikováno v:
Journal of Physics: Conference Series 1643 (2020) 012120
We describe 19B in terms of a 17B-n-n three-body system, where the two-body subsystems 17B-n and n-n are unbound (virtual) states close to the unitary limit. The energy of 19B ground state is well reproduced and two low-lying resonances are predicted
Externí odkaz:
http://arxiv.org/abs/2012.13342
The Bethe-Salpeter equation for two massive scalar particles interacting by scalar massless exchange has solutions of two types, which differ from each other by their behavior in the non-relativistic limit: the normal solutions which turn into the Co
Externí odkaz:
http://arxiv.org/abs/2001.00401
Bethe-Salpeter equation, for massless exchange and large fine structure constant $\alpha>\pi/4$, in addition to the Balmer series, provides another (abnormal) series of energy levels which are not given by the Schr\"odinger equation. So strong field
Externí odkaz:
http://arxiv.org/abs/1903.02892
By solving the 5-body Faddeev-Yakubovsky equations in configuration space with realistic nuclear Hamiltonians we have studied the resonant states of $^5$H isotope. Two different methods, allowing to bypass the exponentially diverging boundary conditi
Externí odkaz:
http://arxiv.org/abs/1902.10553
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The bound state Bethe-Salpeter amplitude was expressed by Nakanishi in terms of a smooth weight function g. By using the generalized Stieltjes transform, we derive an integral equation for the Nakanishi function g for a bound state case. It has the s
Externí odkaz:
http://arxiv.org/abs/1802.05515
The bound state Bethe-Salpeter amplitude was expressed by Nakanishi using a two-dimensional integral representation, in terms of a smooth weight function $g$, which carries the detailed dynamical information. A similar, but one-dimensional, integral
Externí odkaz:
http://arxiv.org/abs/1704.04160
We propose a method to reconstruct the Bethe-Salpeter amplitude in Minkowski space given the Euclidean Bethe-Salpeter amplitude -- or alternatively the Light-Front wave function -- as input. The method is based on the numerical inversion of the Nakan
Externí odkaz:
http://arxiv.org/abs/1701.02479
Akademický článek
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