Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Idziaszek, Z."'
Autor:
Krych, M., Idziaszek, Z.
We investigate collisions of polar molecules in quasi-2D traps in the presence of an external electric field perpendicular to the collision plane. We use the quantum-defect model characterized by two dimensionless parameters: $y$ and $s$. The first o
Externí odkaz:
http://arxiv.org/abs/1508.03443
Publikováno v:
Phys. Rev. A 90, 052719 (2014)
We use the dressed potentials obtained in the adiabatic representation of two coupled channels to calculate s-wave Feshbach resonances in a 3D spherically symmetric potential with an open channel interacting with a closed channel. Analytic expression
Externí odkaz:
http://arxiv.org/abs/1410.0323
Publikováno v:
Phys. Rev. B 90, 155426 (2014)
We study the properties of a quantum particle interacting with a one dimensional structure of equidistant scattering centres. We derive an analytical expression for the dispersion relation and for the Bloch functions in the presence of both even and
Externí odkaz:
http://arxiv.org/abs/1406.6969
Autor:
Bissbort, U., Cocks, D., Negretti, A., Idziaszek, Z., Calarco, T., Schmidt-Kaler, F., Hofstetter, W., Gerritsma, R.
Publikováno v:
Phys. Rev. Lett. 111, 080501 (2013)
We propose and theoretically investigate a hybrid system composed of a crystal of trapped ions coupled to a cloud of ultracold fermions. The ions form a periodic lattice and induce a band structure in the atoms. This system combines the advantages of
Externí odkaz:
http://arxiv.org/abs/1304.4972
We theoretically investigate the properties of a double-well bosonic Josephson junction coupled to a single trapped ion. We find that the coupling between the wells can be controlled by the internal state of the ion, which can be used for studying me
Externí odkaz:
http://arxiv.org/abs/1112.3509
Publikováno v:
New J. Phys. 12 093041 2010
We investigate the static and dynamic properties of a Tonks-Girardeau gas in a harmonic trap with an eccentric $\delta$-perturbation of variable strength. For this we first find the analytic eigensolution of the single particle problem and use this s
Externí odkaz:
http://arxiv.org/abs/1006.0198
Publikováno v:
Phys. Rev. A 81, 041601(R) (2010)
We consider a harmonically trapped Tonks-Girardeau gas of impenetrable bosons in the presence of a single embedded ion, which is assumed to be tightly confined in a RF trap. In an ultracold ion-atom collision the ion's charge induces an electric dipo
Externí odkaz:
http://arxiv.org/abs/0908.3179
Publikováno v:
Eur. Phys. Lett.. 86, 10002 (2009)
Fluctuations of the number of condensed atoms in a finite-size, weakly interacting Bose gas confined in a box potential are investigated for temperatures up to the critical region. The canonical partition functions are evaluated using a recursive sch
Externí odkaz:
http://arxiv.org/abs/0708.0092
Publikováno v:
Phys. Rev. A 76, 033409 (2007)
We consider a system composed of a trapped atom and a trapped ion. The ion charge induces in the atom an electric dipole moment, which attracts it with an r^{-4} dependence at large distances. In the regime considered here, the characteristic range o
Externí odkaz:
http://arxiv.org/abs/0704.1037
Publikováno v:
Europhys. Lett. 70, 572 (2005)
We study the sympathetic cooling of a trapped Fermi gas interacting with an ideal Bose gas below the critical temperature of the Bose-Einstein condensation. We derive the quantum master equation, which describes the dynamics of the fermionic componen
Externí odkaz:
http://arxiv.org/abs/cond-mat/0501613