aqora

Probing Fermi-Hubbard physics with local spin excitations

William Morong, Wenhu Xu, Brian DeMarco

Bulletin of the American Physical SocietyMay 26, 20160 citations

Probing the Equation of State of Strongly Correlated Bose and Fermi Gases

Nir Navon, Sylvain Nascimbène, Kenneth Günter +5 more

Bulletin of the American Physical SocietyJun 14, 20110 citations

“Hard probes” of strongly-interacting atomic gases

Yusuke Nishida

We investigate properties of an energetic atom propagating through strongly interacting atomic gases. The operator product expansion is used to systematically compute a quasiparticle energy and its scattering rate both in a spin-1/2 Fermi gas and in a spinless Bose gas. Reasonable agreement with recent quantum Monte Carlo simulations even at a relatively small momentum k/kF > 1.5 indicates that our large-momentum expansions are valid in a wide range of momentum. We also study a differential scattering rate when a probe atom is shot into atomic gases. Because the number density and current density of the target atomic gas contribute to the forward scattering only, its contact density (measure of short-range pair correlation) gives the leading contribution to the backward scattering. Therefore, such an experiment can be used to measure the contact density and thus provides a new local probe of strongly interacting atomic gases.We investigate properties of an energetic atom propagating through strongly interacting atomic gases. The operator product expansion is used to systematically compute a quasiparticle energy and its scattering rate both in a spin-1/2 Fermi gas and in a spinless Bose gas. Reasonable agreement with recent quantum Monte Carlo simulations even at a relatively small momentum k/kF > 1.5 indicates that our large-momentum expansions are valid in a wide range of momentum. We also study a differential scattering rate when a probe atom is shot into atomic gases. Because the number density and current density of the target atomic gas contribute to the forward scattering only, its contact density (measure of short-range pair correlation) gives the leading contribution to the backward scattering. Therefore, such an experiment can be used to measure the contact density and thus provides a new local probe of strongly interacting atomic gases.

Jun 18, 20121 citation

Observation of spin and charge excitations in a strongly interacting 1D Fermi Gas

Ruwan Senaratne, Danyel Cavazos-Cavazos, Ya-Ting Chang +1 more

Bulletin of the American Physical SocietyMar 16, 20210 citations

Probing strongly interacting atomic gases with energetic atoms

Yusuke Nishida

We investigate properties of an energetic atom propagating through strongly interacting atomic gases. The operator product expansion is used to systematically compute a quasiparticle energy and its scattering rate both in a spin-1/2 Fermi gas and in a spinless Bose gas. Reasonable agreement with recent quantum Monte Carlo simulations even at a relatively small momentum $k/{k}_{\mathrm{F}}\ensuremath{\gtrsim}1.5$ indicates that our large-momentum expansions are valid in a wide range of momentum. We also study a differential scattering rate when a probe atom is shot into atomic gases. Because the number density and current density of the target atomic gas contribute to the forward scattering only, its contact density (measure of short-range pair correlation) gives the leading contribution to the backward scattering. Therefore, such an experiment can be used to measure the contact density and thus provides a new local probe of strongly interacting atomic gases.We investigate properties of an energetic atom propagating through strongly interacting atomic gases. The operator product expansion is used to systematically compute a quasiparticle energy and its scattering rate both in a spin-1/2 Fermi gas and in a spinless Bose gas. Reasonable agreement with recent quantum Monte Carlo simulations even at a relatively small momentum $k/{k}_{\mathrm{F}}\ensuremath{\gtrsim}1.5$ indicates that our large-momentum expansions are valid in a wide range of momentum. We also study a differential scattering rate when a probe atom is shot into atomic gases. Because the number density and current density of the target atomic gas contribute to the forward scattering only, its contact density (measure of short-range pair correlation) gives the leading contribution to the backward scattering. Therefore, such an experiment can be used to measure the contact density and thus provides a new local probe of strongly interacting atomic gases.

arXiv:1110.5926Physical Review AMay 29, 201230 citations

Ground state structure and excitations in strongly correlated Fermi systems

A. P. Protogenov

Physics Letters AMar 1, 19901 citation

Local spin excitations to probe strongly correlated Fermi gases

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