Search results for "Pairing correlations"

showing 3 items of 3 documents

Solution of the Skyrme-Hartree–Fock–Bogolyubovequations in the Cartesian deformed harmonic-oscillator basis. (VIII) hfodd (v2.73y): A new version of …

2017

We describe the new version (v2.73y) of the code HFODD which solves the nuclear Skyrme Hartree-Fock or Skyrme Hartree-Fock-Bogolyubov problem by using the Cartesian deformed harmonic-oscillator basis. In the new version, we have implemented the following new features: (i) full proton-neutron mixing in the particle-hole channel for Skyrme functionals, (ii) the Gogny force in both particle-hole and particle-particle channels, (iii) linear multi-constraint method at finite temperature, (iv) fission toolkit including the constraint on the number of particles in the neck between two fragments, calculation of the interaction energy between fragments, and calculation of the nuclear and Coulomb ene…

Angular momentumNuclear Theory[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]SYMMETRYNuclear TheoryHartree–Fock methodGeneral Physics and AstronomyFOS: Physical sciencesGogny forceSkyrme interactionNuclear density functional theorySelf-consistent mean-field01 natural sciences114 Physical sciencesNuclear Theory (nucl-th)Energy density functional theorySYSTEMSQuantum mechanics0103 physical sciences010306 general physicsHarmonic oscillator[ PHYS.NUCL ] Physics [physics]/Nuclear Theory [nucl-th]PhysicsHartree–Fock–Bogolyubovta114010308 nuclear & particles physicsAugmented Lagrangian methodInteraction energyAngular-momentum projection113 Computer and information sciencesHardware and ArchitecturePairingIsospintheoretical nuclear physicsSelf-consistent mean fieldHartree-Fock-BogolyubovPairing correlations
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Unconventional phases of attractive Fermi gases in synthetic Hall ribbons

2017

An innovative way to produce quantum Hall ribbons in a cold atomic system is to use M hyperfine states of atoms in a one-dimensional optical lattice to mimic an additional "synthetic dimension." A notable aspect here is that the SU(M) symmetric interaction between atoms manifests as "infinite ranged" along the synthetic dimension. We study the many-body physics of fermions with SU(M) symmetric attractive interactions in this system using a combination of analytical field theoretic and numerical density-matrix renormalization-group methods. We uncover the rich ground-state phase diagram of the system, including unconventional phases such as squished baryon fluids, shedding light on many-body…

AtomsHyperfine stateField (physics)One dimensional optical latticeGround statePhase separationQuantum Hall effectHadronsGround state phase diagram01 natural sciencesAttractive interactions010305 fluids & plasmasSuperfluidityHall effectQuantum mechanicsShedding light0103 physical sciencesddc:530010306 general physicsFermionsQuantumWave functionsPhysicsOptical latticeCondensed matter physicsFermionFermionic systemsElectron gasOptical latticesQuantum theoryDewey Decimal Classification::500 | Naturwissenschaften::530 | PhysikNumerical methodsFermi gasDensity matrix renormalization group methodsStatistical mechanicsPairing correlations
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Nuclear matrix elements for double beta decay in the QRPA approach: a critical review

2009

The calculation of nuclear matrix elements (NME) for double beta decay transitions (DBD) relies upon several approximations. The purpose of this note is to review some of these approximations, and their impact upon the NME. We shall present our results, which have been obtained in the framework of the proton-neutron quasiparticle random phase approximation (pnQRPA), and we shall focus on short range correlations, pairing, and symmetry effects.

PhysicsHistoryFísicaSymmetry (physics)Computer Science ApplicationsEducationNuclear physicsTheoretical physicsRange (mathematics)Double beta decayPairingNuclear matrix elementsQuasiparticleNeutrinoless double beta decayRandom phase approximationPairing correlations
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