dorsal/arxiv
View SchemaOn the mechanism of formation of the Efimov states in the helium ^4He trimer
| Authors | E. A. Kolganova, A. K. Motovilov |
|---|---|
| Categories | |
| ArXiv ID | physics/9808027 |
| URL | https://arxiv.org/abs/physics/9808027 |
| Journal | Phys. Atom. Nucl., 1999, vol. 62, No. 7, pp. 1179-1192 (The title in journal slightly changed) |
Abstract
A mechanism of disappearance and formation of the Efimov levels of the helium ^4He trimer is studied when the force of the interatomic interaction is changed. It is shown that these levels arise from virtual levels which are in turn formed from (quasi)resonances settled on the real axis. The resonances including virtual levels are calculated by the method based on the solution of the boundary value problem, at complex energies, for the Faddeev differential equations describing the scattering processes (2+1\to 2+1; 1+1+1). All the calculations are performed with the known interatomic Aziz He-He potential HFD-B. A very strong repulsive component of this potential at short distances between helium atoms is approximated by a hard core. A special attention is paid to the substantiation of the method used for computing resonances and to the investigation of its applicability range.
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"abstract": "A mechanism of disappearance and formation of the Efimov levels of the helium\n^4He trimer is studied when the force of the interatomic interaction is\nchanged. It is shown that these levels arise from virtual levels which are in\nturn formed from (quasi)resonances settled on the real axis. The resonances\nincluding virtual levels are calculated by the method based on the solution of\nthe boundary value problem, at complex energies, for the Faddeev differential\nequations describing the scattering processes (2+1\\to 2+1; 1+1+1). All the\ncalculations are performed with the known interatomic Aziz He-He potential\nHFD-B. A very strong repulsive component of this potential at short distances\nbetween helium atoms is approximated by a hard core. A special attention is\npaid to the substantiation of the method used for computing resonances and to\nthe investigation of its applicability range.",
"arxiv_id": "physics/9808027",
"authors": [
"E. A. Kolganova",
"A. K. Motovilov"
],
"categories": [
"physics.atm-clus",
"nucl-th"
],
"journal_ref": "Phys. Atom. Nucl., 1999, vol. 62, No. 7, pp. 1179-1192 (The title\n in journal slightly changed)",
"title": "On the mechanism of formation of the Efimov states in the helium ^4He trimer",
"url": "https://arxiv.org/abs/physics/9808027"
},
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