4 citations · 7 across the 2 of their papers we have counts for
4 papers
Simple condensation of composite bosons in a number conserving approach to many fermion systems
F. Palumbo
We recently derived the Hamiltonian of fermionic composites by an exact procedure of bosonization. In the present paper expand this Hamiltonian in the inverse of the number of ferm…
The multilevel pairing Hamiltonian versus the degenerate case
M. B. Barbaro, R. Cenni, S. Chiacchiera +2
We study the pairing Hamiltonian in a set of non degenerate levels. First, we review in the path integral framework the spontaneous breaking of the U(1) symmetry occurring in such…
Path integrals and degrees of freedom in many-body systems and relativistic field theories
F. Palumbo
The identification of physical degrees of freedom is sometimes obscured in the path integral formalism, and this makes it difficult to impose some constraints or to do some approxi…
Bosonization of the pairing Hamiltonian
M. B. Barbaro, A. Molinari, F. Palumbo +1
The problem of the pairing interaction is dealt with even Grassmann variables in the hamiltonian framework. Eigenfunctions of given energy, seniority and zero third component of an…