Zobrazeno 1 - 10
of 207
pro vyhledávání: '"Yeong, E."'
Autor:
Kim, Yeong E., Zubarev, Alexander L.
Publikováno v:
2005 J. Phys. B: At. Mol. Opt. Phys. 38 L243-L249
The zero-temperature properties of a dilute two-component Fermi gas in the BCS-BEC crossover are investigated. On the basis of a generalization of the variational Schwinger method, we construct approximate semi-analytical formulae for collective freq
Externí odkaz:
http://arxiv.org/abs/cond-mat/0505139
Autor:
Kim, Yeong E., Zubarev, Alexander L.
Publikováno v:
Phys. Rev. A 72, 011603(R) (2005)
The zero-temperature properties of a dilute two-component Fermi gas in the BCS-BEC crossover are investigated. On the basis of a generalization of the Hylleraas-Undheim method, we construct rigorous upper bounds to the collective frequencies for the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0502651
Autor:
Kim, Yeong E., Zubarev, Alexander L.
Dynamics of strongly interacting Fermi gases, consisting of a 50-50 mixture of two different fermionic species, is investigated. For the equation of state we consider a Pad\'{e} [2/2] approximations, which gives the weak-coupling perturbative formula
Externí odkaz:
http://arxiv.org/abs/cond-mat/0408283
Autor:
Kim, Yeong E., Zubarev, Alexander L.
Publikováno v:
Phys.Rev.A70:033612,2004
The dynamics of strongly interacting trapped dilute Fermi gases (dilute in the sense that the range of interatomic potential is small compared with inter-particle spacing) is investigated in a single-equation approach to the time-dependent density-fu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404513
Autor:
Kim, Yeong E., Zubarev, Alexander L.
Publikováno v:
Phys. Lett. A327, 397 (2004)
Dynamics of strongly interacting trapped dilute Fermi gases is investigated at zero temperature. As an example of application we consider the expansion of the cloud of fermions initially confined in an anisotropic harmonic trap, and study the equatio
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403085
Autor:
Kim, Yeong E., Zubarev, Alexander L.
The lowest order constrained variational method [Phys. Rev. Lett. 88, 210403 (2002)] has been generalized for a dilute (in the sense that the range of interatomic potential is small compared with inter-particle spacing) uniform gas of bosons near the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0305692
Autor:
Kim, Yeong E., Zubarev, Alexander L.
A time-dependent Kohn-Sham (KS)-like equation for N bosons in a trap is generalized for the case of inelastic collisions. We derive adiabatic equations which are used to calculate the nonlinear dynamics of the Bose-Einstein condensate (BEC) and non-m
Externí odkaz:
http://arxiv.org/abs/cond-mat/0305089
Autor:
Kim, Yeong. E., Zubarev, Alexander L.
The lowest order constrained variational method [Phys. Rev. Lett. {\bf 88}, 210403 (2002)] has been generalized for a dilute (in the sense that the range of interatomic potential is small compared with inter-particle spacing) uniform gas of bosons ne
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212196
Autor:
Kim, Yeong E., Zubarev, Alexander L.
A time-dependent Kohn-Sham (KS) like theory is presented for N bosons in thre e and lower-dimensional traps. We derive coupled equations, which allow one to calculate the energies of elementary excitations. A rigorous proof is given to show that the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0205422
Autor:
Kim, Yeong E., Zubarev, Alexander L.
The ground states of N-electron parabolic quantum dots in the presence of a perpendicular magnetic field are investigated. Rigorous lower bounds to the ground-state energies are obtained. It is shown that our lower bounds agree well with the results
Externí odkaz:
http://arxiv.org/abs/cond-mat/0109130