@article{ISI:000297134600001,
 abstract = {We generalize the Nozieres-Schmitt-Rink method to study the repulsive
Fermi gas in the absence of molecule formation, i.e., in the so-called
``upper branch.″ We find that the system remains stable except close
to resonance at sufficiently low temperatures. With increasing
scattering length, the energy density of the system attains a maximum at
a positive scattering length before resonance. This is shown to arise
from Pauli blocking which causes the bound states of fermion pairs of
different momenta to disappear at different scattering lengths. At the
point of maximum energy, the compressibility of the system is
substantially reduced, leading to a sizable uniform density core in a
trapped gas. The change in spin susceptibility with increasing
scattering length is moderate and does not indicate any magnetic
instability. These features should also manifest in Fermi gases with
unequal masses and/or spin populations.},
 article-number = {210401},
 author = {Shenoy, Vijay B. and Ho, Tin-Lun},
 doi = {10.1103/PhysRevLett.107.210401},
 eissn = {1079-7114},
 issn = {0031-9007},
 journal = {PHYSICAL REVIEW LETTERS},
 month = {NOV 14},
 number = {21},
 times-cited = {31},
 title = {Nature and Properties of a Repulsive Fermi Gas in the Upper Branch of
the Energy Spectrum},
 unique-id = {ISI:000297134600001},
 volume = {107},
 year = {2011}
}