Volosniev, A. G. ; Hammer, H.-W. (2017)
Flow equations for cold Bose gases.
In: New Journal of Physics, 19 (11)
doi: 10.1088/1367-2630/aa9011
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Wederive flow equations for cold atomic gases with one macroscopically populated energy level. The generator is chosen such that the ground state decouples from all other states in the system as the renormalization group flow progresses.Wepropose a self-consistent truncation scheme for the flow equations at the level of three-body operators and show how they can be used to calculate the ground state energy of a generalN-body system. Moreover, we provide a general method to estimate the truncation error in the calculated energies. Finally, we test our scheme by benchmarking to the exactly solvable Lieb–Liniger model and find good agreement for weak and moderate interaction strengths.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Volosniev, A. G. ; Hammer, H.-W. |
| Art des Eintrags: | Bibliographie |
| Titel: | Flow equations for cold Bose gases |
| Sprache: | Englisch |
| Publikationsjahr: | 2017 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | New Journal of Physics |
| Jahrgang/Volume einer Zeitschrift: | 19 |
| (Heft-)Nummer: | 11 |
| DOI: | 10.1088/1367-2630/aa9011 |
| URL / URN: | https://doi.org/10.1088/1367-2630/aa9011 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Wederive flow equations for cold atomic gases with one macroscopically populated energy level. The generator is chosen such that the ground state decouples from all other states in the system as the renormalization group flow progresses.Wepropose a self-consistent truncation scheme for the flow equations at the level of three-body operators and show how they can be used to calculate the ground state energy of a generalN-body system. Moreover, we provide a general method to estimate the truncation error in the calculated energies. Finally, we test our scheme by benchmarking to the exactly solvable Lieb–Liniger model and find good agreement for weak and moderate interaction strengths. |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Theoretische Kernphysik |
| Hinterlegungsdatum: | 02 Aug 2024 12:33 |
| Letzte Änderung: | 02 Aug 2024 12:33 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Flow equations for cold Bose gases. (deposited 17 Dez 2017 20:56)
- Flow equations for cold Bose gases. (deposited 02 Aug 2024 12:33) [Gegenwärtig angezeigt]
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