105 citations · 597 across the 30 of their papers we have counts for
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Mimicking multi-channel scattering with single-channel approaches
Sergey Grishkevich, Philipp-Immanuel Schneider, Yulian V. Vanne +1
The collision of two atoms is an intrinsic multi-channel (MC) problem as becomes especially obvious in the presence of Feshbach resonances. Due to its complexity, however, single-c…
Two-channel model of photoassociation in the vicinity of a Feshbach resonance
Philipp-Immanuel Schneider, Alejandro Saenz
We derive the two-channel (TC) description of the photoassociation (PA) process in the presence of a magnetic Feshbach resonance and compare to full coupled multi-channel calculati…
Ab-initio determination of Bose-Hubbard parameters for two ultracold atoms in an optical lattice using a three-well potential
Philipp-Immanuel Schneider, Sergey Grishkevich, Alejandro Saenz
We calculate numerically the exact energy spectrum of the six dimensional problem of two interacting Bosons in a three-well optical lattice. The particles interact via a full Born-…