On the existence of roton excitations in Bose-Einstein condensates: Signature of proximity to a Mott insulating phase

Within the last decade, artcially engineered BoseEinstein condensation has been achieved in atomic systems, BoseEinstein Condensates (BECs) are superfluids just like bosonic helium is and all interacting bosonic fluids are expected to be at low enough temperatures. One difference between the two sys...

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Veröffentlicht in:	Journal of low temperature physics 2004-12, Vol.137 (5-6), p.599-608
Hauptverfasser:	NAZARIO, Z, SANTIAGO, D. I
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Physics Quantum fluids and solids liquid and solid helium
Online-Zugang:	Volltext
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