197 citations
10 papers
Lieb-Mattis ordering theorem of electronic energy levels in the thermodynamic limit
Manuel Calixto, Alberto Mayorgas, Julio Guerrero
Lieb-Mattis theorem orders the lowest-energy states of total spin of a system of interacting fermions. We generalize these predictions to fermionic mixtures of particle…
Agent-based Ecological Model Calibration - on the Edge of a New Approach
Antonio Pereira, Pedro Duarte, Luis Paulo Reis
The purpose of this paper is to present a new approach to ecological model calibration -- an agent-based software. This agent works on three stages: 1- It builds a matrix that synt…
Continuum effects in reactions involving weakly bound nuclei
A. M. Moro, R. Crespo, F. Nunes +1
The relevance of the continuum effects in transfer reactions is discussed in conection with the determination of observables of astrophysical interest. In particular, we examine th…
Low energy behavior of astrophysical S factor in radiative captures to loosely bound final states
A. M. Mukhamedzhanov, F. M. Nunes
The low-energy behavior of the astrophysical S-factor for E1 direct radiative captures a(p,gamma)b leading to loosely bound final states (b=a+p) is investigated. We derive a first-…
(^{8})B breakup in elastic and transfer reactions
A. M. Moro, R. Crespo, F. Nunes +1
We have studied the transfer reaction N(Be,B)C at (\mathrm{E}_{\mathrm{lab}}=84) MeV, paying special attention to the effects of the coupling to the continuum…
Ultracold neutrons, quantum effects of gravity and the Weak Equivalence Principle
O. Bertolami, F. M. Nunes
We consider an extension of the recent experiment with ultracold neutrons and the quantization of its vertical motion in order to test the Weak Equivalence Principle. We show that…