Equation of state ofHe3submonolayers inHe4films: Multiple-spectra Green’s functions

Autor:	Anderson Rh, Miller
Rok vydání:	1993
Předmět:	Physics Equation of state education.field_of_study Matrix (mathematics) Helium-4 Self-energy Phonon Quantum mechanics Excited state Population Hartree–Fock method Atomic physics education
Zdroj:	Physical Review B. 48:10426-10434
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.48.10426
Popis:	Utilizing a model effective interaction for [sup 3]He atoms in a [sup 4]He film that consists of two-body potentials, phonon exchange, and ripplon exchange, we calculate the [sup 3]He equation of state. The energy and pressure are determined in the Hartree-Fock approximation allowing for [sup 3]He population of multiple discrete transverse states. In this work we use a two-state approximation and self-consistently solve the matrix Dyson equation for the 2[times]2 self-energy matrix. We find that the many-body self-energy decreases the gap between the lowest and first excited transverse state from the noninteracting model but that no clear evidence exists for a self-bound state.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::51e9f1f6e9cad974886d31a97c6a36af https://doi.org/10.1103/physrevb.48.10426 Zobrazit plný text záznamu