Abstract
Some aspects of dimers and trimers are explored in a unified manner for various helium species. These include3He,4He and6He as well as combinations thereof. The subtle interplay among the central factors involved is delineated carefully. In particular, the dimer problem has been recast in three complementary forms which are based on: (1) the conventional eigenvalua equation in both its Schrödinger and Lippmann-Schwinger versions; (2) the quantum parameter; and (3) the concept of an eigenmass below which no binding occurs for a specific interatomic potential. This framework turns out to be adaptable, in its gross features, to two-dimensional systems and to the liquid phase as well. General implications ofn-merization in several helium liquids, comprising thin films, are examined briefly.
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Ghassib, H.B. On dimers and trimers in some helium fluids. Z. Physik B - Condensed Matter 56, 91–98 (1984). https://doi.org/10.1007/BF01469689
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DOI: https://doi.org/10.1007/BF01469689