217 citations · 1k across the 19 of their papers we have counts for
19 papers
BCS-BEC crossover with unequal mass fermions
Roberto B. Diener, Mohit Randeria
We investigate the crossover from BCS pairing to molecular BEC in an atomic gas with two fermion species with masses $m_\up \ne m_\dn$ tuned through a Feshbach resonance. We presen…
Quantum Fluctuations in the Superfluid State of the BCS-BEC Crossover
Roberto B. Diener, Rajdeep Sensarma, Mohit Randeria
We determine the effects of quantum fluctuations about the T=0 mean field solution of the BCS-BEC crossover in a dilute Fermi gas using the functional integral method. These fluctu…
Breakdown of the Thomas Fermi approximation for polarized Fermi gases
Rajdeep Sensarma, William Schneider, Roberto B. Diener +1
We use Bogoliubov de-Gennes theory to show that the commonly used Thomas-Fermi approximation (TFA) can fail in describing polarized unitary gases in anisotropic harmonic traps. We…
Criterion for bosonic superfluidity in an optical lattice
Roberto B. Diener, Qi Zhou, Hui Zhai +1
We show that the current method of determining superfluidity in optical lattices based on a visibly sharp bosonic momentum distribution can be misleading, for even a n…
Quantum Spin Dynamics of Spin-1 Bose Gas
Roberto B. Diener, Tin-Lun Ho
We show that the quantum evolution of a spin-1 Bose gas with nearly all bosons initially in the state has a "quantum carpet" {\em spin-time} structure with self-similar p…
Cr Spinor Condensate A Biaxial or Uniaxial Spin Nematic
Roberto B. Diener, Tin-Lun Ho
We show that the newly discovered Cr Bose condensate in zero magnetic field can be a spin nematic of the following kind: A "maximum" polar state, a "co-linear" polar state,…