Observation of the Efimov state of the helium trimer
Maksim Kunitski,S. Zeller,J. Voigtsberger,Anton Kalinin,Lothar Ph. H. Schmidt,Markus Schöffler,Achim Czasch,Wieland Schöllkopf,Robert E. Grisenti,Robert E. Grisenti,Till Jahnke,Dörte Blume,Reinhard Dörner +12 more
TLDR
Experimental observation of this long-predicted but experimentally elusive Efimov state of 4He3 by means of Coulomb explosion imaging confirms the predicted size and a typical structure where two atoms are close to each other while the third is far away and sheds light on three-body physics more broadly.Abstract:
Quantum theory dictates that upon weakening the two-body interaction in a three-body system, an infinite number of three-body bound states of a huge spatial extent emerge just before these three-body states become unbound. Three helium (He) atoms have been predicted to form a molecular system that manifests this peculiarity under natural conditions without artificial tuning of the attraction between particles by an external field. Here we report experimental observation of this long-predicted but experimentally elusive Efimov state of 4 He 3 by means of Coulomb explosion imaging. We show spatial images of an Efimov state, confirming the predicted size and a typical structure where two atoms are close to each other while the third is far away.read more
Citations
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Efimov physics: a review
Pascal Naidon,Shimpei Endo +1 more
TL;DR: These experiments revealed that the previously undetermined three-body parameter introduced in the Efimov theory to stabilise the three- body attraction typically scales with the range of atomic interactions.
Journal ArticleDOI
Impurity in a Bose-Einstein Condensate and the Efimov Effect.
TL;DR: It is shown that the energy and quasiparticle residue of the dressed impurity (polaron) are significantly lowered by three-body correlations, even for weak interactions where there is no Efimov trimer state in a vacuum.
Journal ArticleDOI
Efimov Physics: a review
Pascal Naidon,Shimpei Endo +1 more
TL;DR: In this article, the authors review theoretical and experimental advances in Efimov physics, an array of quantum few-body and many-body phenomena arising for particles interacting via short-range resonant interactions, that is based on the appearance of a scale-invariant three-body attraction theoretically discovered by VitalyEfimov in 1970.
Journal ArticleDOI
Effective field theory description of halo nuclei
TL;DR: In this article, effective field theory (EFT) has been used to compute the properties of single-neutron, two-and single-proton halos of s-wave and p-wave type.
Journal ArticleDOI
Observation of the Efimovian expansion in scale-invariant Fermi gases
TL;DR: The theoretical prediction and experimental observation of a distinct type of expansion dynamics for scale-invariant quantum gases is reported, which shares the same scaling law and mathematical description as the Efimov effect.
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