6533b829fe1ef96bd128a538
RESEARCH PRODUCT
The spectra of mixed $^3$He-$^4$He droplets
S. FantoniR. GuardiolaJ. NavarroA.p. Zukersubject
Chemical Physics (physics.chem-ph)Excitation spectrumdiffusion[PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus]wave functionsFOS: Physical sciencesMonte Carlo methodsbinding energyMonte Carlo technique ; Excitation spectrum ;Monte Carlo techniqueliquid theoryliquid helium 3-4 mixturesPhysics - Chemical Physics[PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph]Physics - Atomic and Molecular ClustersAtomic and Molecular Clusters (physics.atm-clus)67.60.-g 66.10.Cb 61.20.Jadropsdescription
The diffusion Monte Carlo technique is used to calculate and analyze the excitation spectrum of $^3$He atoms bound to a cluster of $^4$He atoms, by using a previously determined optimum filling of single-fermion orbits with well defined orbital angular momentum $L$, spin $S$ and parity quantum numbers. The study concentrates on the energies and shapes of the three kinds of states for which the fermionic part of the wave function is a single Slater determinant: maximum $L$ or maximum $S$ states within a given orbit, and fully polarized clusters. The picture that emerges is that of systems with strong shell effects whose binding and excitation energies are essentially determined over configuration at fixed number of particles and spin, i.e., by the monopole properties of an effective Hamiltonian.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-05-04 |