119 citations · 647 across the 35 of their papers we have counts for
6 papers · 1 filter
An open systems approach to calculating time dependent spectra
Martti Havukainen, Stig Stenholm
A new method to calculate the spectrum using cascaded open systems and master equations is presented. The method uses two state analyzer atoms which are coupled to the system of in…
The wave packet - a universal quantum object
S. Stenholm, K. -A. Suominen
We summarize the theoretical description of wave packets on molecular energy levels. We review the various quantum mechanical effects which can be studied and the models that can b…
Hartree-Fock treatment of the two-component Bose-Einstein condensate
P. Ohberg, S. Stenholm
We present a numerical study of a trapped binary Bose-condensed gas by solving the corresponding Hartree-Fock equations. The density profile of the binary Bose gas is solved with a…
Low-energy elementary excitations of a trapped Bose-condensed gas
P. Ohberg, E. L. Surkov, I. Tittonen +3
Bogolyubov-De Gennes equations for the excitations of a Bose condensate in the Thomas-Fermi regime in harmonic traps of any asymmetry and introduce a classification of eigenstates.…
Weisskopf-Wigner model for wave packet excitation
Asta Paloviita, Kalle-Antti Suominen, Stig Stenholm
We consider a laser induced molecular excitation process as a decay of a single energy state into a continuum. The analytic results based on Weisskopf-Wigner approach and perturbat…
States prepared by decay
Stig Stenholm, Asta Paloviita
We consider the time evolution of a discrete state embedded in a continuum. Results from scattering theory can be utilized to solve the initial value problem and discuss the system…