@article{ISI:000303676800002,
 abstract = {In the presence of a synthetic non-Abelian gauge field that produces a
Rashba-like spin-orbit interaction, a collection of weakly interacting
fermions undergoes a crossover from a Bardeen-Cooper-Schrieffer (BCS)
ground state to a Bose-Einstein condensate (BEC) ground state when the
strength of the gauge field is increased (Vyasanakere et al 2011 Phys.
Rev. B 84 014512). The BEC that is obtained at large gauge coupling
strengths is a condensate of tightly bound bosonic fermion pairs. The
properties of these bosons are solely determined by the Rashba gauge
field-hence called rashbons. In this paper, we conduct a systematic
study of the properties of rashbons and their dispersion. This study
reveals a new qualitative aspect of the problem of interacting fermions
in non-Abelian gauge fields, i.e. that the rashbon state ceases to exist
when the center-of-mass momentum of the fermions exceeds a critical
value that is of the order of the gauge coupling strength. The study
allows us to estimate the transition temperature of the rashbon BEC and
suggests a route to enhance the exponentially small transition
temperature of the system with a fixed weak attraction to the order of
the Fermi temperature by tuning the strength of the non-Abelian gauge
field. The nature of the rashbon dispersion, and in particular the
absence of the rashbon states at large momenta, suggests a regime in
parameter space where the normal state of the system will be a dynamical
mixture of uncondensed rashbons and unpaired helical fermions. Such a
state should show many novel features including pseudogap physics.},
 article-number = {043041},
 author = {Vyasanakere, Jayantha P. and Shenoy, Vijay B.},
 doi = {10.1088/1367-2630/14/4/043041},
 issn = {1367-2630},
 journal = {NEW JOURNAL OF PHYSICS},
 month = {APR 27},
 times-cited = {33},
 title = {Rashbons: properties and their significance},
 unique-id = {ISI:000303676800002},
 volume = {14},
 year = {2012}
}