Biomedical subjects

J Dukelsky

Publications and source records attributed to J Dukelsky.

15 recordsLinked to original sources

PubMed2001

Class of exactly solvable pairing models.

We present three classes of exactly solvable models for fermion and boson systems, based on the pairing interaction. These models are solvable in any dimension. As an example we show the first results for fermions interacting with repulsive pairing forces in a two-dimensional square lattice. In spite of the repulsive pairing force the exact results show attractive pair correlations.

Journal Article↗

PubMed2001

New mechanism for the enhancement of sd dominance in interacting boson models.

We introduce an exactly solvable model for interacting bosons that extend up to high spin and interact through a repulsive pairing force. The model exhibits a phase transition to a state with almost complete sd dominance. The repulsive pairing interaction that underlies the model has a natural microscopic origin in the Pauli exclusion principle between constituent nucleons. As such, repulsive pairing between bosons seems to provide a new mechanism for the enhancement of sd dominance, giving further support for the validity of the sd interacting boson model.

Journal Article↗

PubMed2001

Condensate fragmentation in a new exactly solvable model for confined bosons.

Based on Richardson's exact solution of the multilevel pairing model we derive a new class of exactly solvable models for the finite boson system. As an example we solve a particular Hamiltonian which displays a transition to a fragmented condensate for repulsive pairing interaction.

Journal Article↗

PubMed1996