dorsal/arxiv
View SchemaTime-Dependent Local Density Approximation for Collective Excitations of Atomic Clusters
| Authors | G. F. Bertsch, K. Yabana |
|---|---|
| Categories | |
| ArXiv ID | physics/9706040 |
| URL | https://arxiv.org/abs/physics/9706040 |
| DOI | 10.1063/1.54541 |
Abstract
We discuss the calculation of collective excitations in atomic clusters using the time-dependent local density approximation. In principle there are many formulations of the TDLDA, but we have found that a particularly efficient method for large clusters is to use a coordinate space mesh and the algorithms for the operators and the evolution equations that had been developed for the nuclear time-dependent Hartree-Fock theory. The TDLDA works remarkably well to describe the strong excitations in alkali metal clusters and in carbon clusters. We show as an example the benzene molecule, which has two strong features in its spectrum. The systematics of the linear carbon chains is well reproduced, and may be understood in rather simple terms.
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"abstract": "We discuss the calculation of collective excitations in atomic clusters using\nthe time-dependent local density approximation. In principle there are many\nformulations of the TDLDA, but we have found that a particularly efficient\nmethod for large clusters is to use a coordinate space mesh and the algorithms\nfor the operators and the evolution equations that had been developed for the\nnuclear time-dependent Hartree-Fock theory. The TDLDA works remarkably well to\ndescribe the strong excitations in alkali metal clusters and in carbon\nclusters. We show as an example the benzene molecule, which has two strong\nfeatures in its spectrum. The systematics of the linear carbon chains is well\nreproduced, and may be understood in rather simple terms.",
"arxiv_id": "physics/9706040",
"authors": [
"G. F. Bertsch",
"K. Yabana"
],
"categories": [
"physics.atm-clus"
],
"doi": "10.1063/1.54541",
"title": "Time-Dependent Local Density Approximation for Collective Excitations of Atomic Clusters",
"url": "https://arxiv.org/abs/physics/9706040"
},
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