Feshbach modulation spectroscopy of the Fermi-Hubbard model


Autoria(s): Dirks, Andreas; Mikelsons, Karlis; Krishnamurthy, HR; Freericks, JK
Data(s)

2015

Resumo

In the vicinity of a Feshbach resonance, a system of ultracold atoms in an optical lattice undergoes rich physical transformations which involve molecule formation and hopping of molecules on the lattice and thus goes beyond a single-band Hubbard model description. We explore theoretically the response of this system to a harmonic modulation of the magnetic field, and thus of the scattering length, across the Feshbach resonance. In the regime in which the single-band Hubbard model is still valid, we provide results for the doublon production as a function of the various parameters, such as frequency, amplitude, etc., that characterize the field modulation, as well as the lattice depth. The method may uncover a route towards the efficient creation of ultracold molecules and also provide an alternative to conventional lattice-depth-modulation spectroscopy.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/52910/1/Phy_Rev-A_92-5_053612_2015.pdf

Dirks, Andreas and Mikelsons, Karlis and Krishnamurthy, HR and Freericks, JK (2015) Feshbach modulation spectroscopy of the Fermi-Hubbard model. In: PHYSICAL REVIEW A, 92 (5).

Publicador

AMER PHYSICAL SOC

Relação

http://dx.doi.org/10.1103/PhysRevA.92.053612

http://eprints.iisc.ernet.in/52910/

Palavras-Chave #Physics
Tipo

Journal Article

PeerReviewed