Projection on particle number and angular momentum: Example of triaxial Bogoliubov quasiparticle states
B. Bally, M. Bender
Abstract
The authors provide a state-of-the-art overview of projection techniques employed in beyond-mean-field many-body methods. They focus on two symmetries that are of critical importance for the description of nuclear spectroscopy, particle number, and angular momentum. The presentation covers formal aspects of symmetry restoration (group theory) and practical aspects related to numerical implementation. A number of illustrative examples are given, including cranked states in odd-$A$ nuclei.
Topics & Concepts
QuasiparticleAngular momentumPhysicsProjection (relational algebra)Particle (ecology)Classical mechanicsQuantum electrodynamicsQuantum mechanicsMathematicsGeologySuperconductivityOceanographyAlgorithmNuclear physics research studiesAtomic and Molecular PhysicsAstronomical and nuclear sciences