Quantum simulation of expanding space-time with tunnel-coupled condensates

Neuenhahn, Clemens; Marquardt, Florian

doi:10.1088/1367-2630/17/12/125007

Datensatz

DATENSATZ AKTIONENEXPORT

Zur Ablage hinzufügen

Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben

Zeitschriftenartikel

Quantum simulation of expanding space-time with tunnel-coupled condensates

MPG-Autoren

Es sind keine MPG-Autoren in der Publikation vorhanden

Externe Ressourcen

Es sind keine externen Ressourcen hinterlegt

Volltexte (beschränkter Zugriff)

Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.

Volltexte (frei zugänglich)

Neuenhahn_2015_New_J._Phys._17_125007.pdf
(beliebiger Volltext), 2MB

Ergänzendes Material (frei zugänglich)

2015_Neuenhahn.png
(Ergänzendes Material), 68KB

Zitation

Neuenhahn, C., & Marquardt, F. (2015). Quantum simulation of expanding space-time with tunnel-coupled condensates. New Journal of Physics, 17: 125007. doi:10.1088/1367-2630/17/12/125007.

Zitierlink: https://hdl.handle.net/21.11116/0000-0001-BBFC-1

Zusammenfassung

We consider two weakly interacting quasi-1D condensates of cold bosonic atoms. It turns out that a time-dependent variation of the tunnel-coupling between those condensates is equivalent to the spatial expansion of a one-dimensional toy-Universe, with regard to the dynamics of the relative phase field. The dynamics of this field is governed by the quantum sine-Gordon equation. Thus, this analogy could be used to 'quantum simulate' the dynamics of a scalar, interacting quantum field on an expanding background. We discuss how to observe the 'freezing' of quantum fluctuations during an accelerating expansion in a possible experiment. We also analyze an experimental protocol to study the formation of sine-Gordon breathers in the relative phase field, seeded by quantum