73 citations · 640 across the 23 of their papers we have counts for
23 papers
Structure of the number projected BCS wave function
J. Dukelsky, S. Pittel, C. Esebbag
We study the structure of the number projected BCS (PBCS) wave function in the particle-hole basis, displaying its similarities with coupled clusters theory (CCT). The analysis of…
Advanced density matrix renormalization group method for nuclear structure calculations
Ö. Legeza, L. Veis, A. Poves +1
We present an efficient implementation of the Density Matrix Renormalization Group (DMRG) algorithm that includes an optimal ordering of the proton and neutron orbitals and an effi…
Exact solutions for pairing interactions
J. Dukelsky, S. Pittel
The exact solution of the BCS pairing Hamiltonian was found by Richardson in 1963. While little attention was paid to this exactly solvable model in the remainder of the 20th centu…
Alpha-like quartet condensation and isovector pairing correlations in N=Z nuclei
N. Sandulescu, D. Negrea, J. Dukelsky +1
We propose a simple quartet condensation model (QCM) which describes with very high accuracy the isovector pairing correlations in self-conjugate nuclei. The quartets have an alpha…
Exactly solvable pairing Hamiltonian for heavy nuclei
J. Dukelsky, S. Lerma H., L. M. Robledo +2
We present a new exactly solvable Hamiltonian with a separable pairing interaction and non-degenerate single-particle energies. It is derived from the hyperbolic family of Richards…
Pairing and alpha-like quartet condensation in N=Z nuclei
N. Sandulescu, J. Dukelsky, D. Negrea
We discuss the treatment of isovector pairing by an alpha-like quartet condensate which conserves exactly the particle number, the spin and the isospin. The results show that the q…