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Induced interactions and superfluidity in optical lattices with multi-component Fermi gases
H. Heiselberg
Many-body effects on superfluidity and transition temperatures are calculated for optical lattices and uniform systems with ultracold multi-component Fermi gases. The induced inter…
Phases in optical lattices vs. Coulomb frustrated HTc cuprates
Henning Heiselberg
Fermionic atoms in 2D optical lattices and electrons in HTc cuprates may both be described by the Hubbard model. However, if Coulomb frustration is responsible for the striped phas…
Phases of Bosons or Fermions in confined optical lattices
H. Heiselberg
Phases of Bose or Fermi atoms in optical lattices confined in harmonic traps are studied within the Thomas-Fermi approximation. Critical radii and particle number for onset of Mott…
Sound modes at the BCS-BEC crossover
H. Heiselberg
First and second sound speeds are calculated for a uniform superfluid gas of fermi atoms as a function of temperature, density and interaction strength. The second sound speed is o…
Second sound in Fermi gases at the BCS-BEC crossover
H. Heiselberg
The thermodynamic potential is calculated for a uniform superfluid gas of fermi atoms from the mean field BCS equations including corrections from induced interactions, Hartree-Foc…
Pairing gaps in atomic gases at the BCS-BEC crossover
H. Heiselberg
Strong evidence for pairing and superfluidity has recently been found in atomic Fermi gases at the BCS-BEC crossover both in collective modes and RF excitation energies. It is argu…