46 citations · 87 across the 6 of their papers we have counts for
6 papers
The spin-flip-induced quadrupole resonance in odd- exotic atoms
Fredrik P. Gustafsson, Daniel Pęcak, Tomasz Sowiński
We examine the possible existence of quadrupole resonances in exotic atoms containing odd- nuclei. We find that the spin-flip of the de-exciting exotic particle can induce a res…
Unconventional pairing in few-fermion systems at finite temperature
Daniel Pęcak, Tomasz Sowiński
Attractively interacting two-component mixtures of fermionic particles confined in a one-dimensional harmonic trap are investigated. Properties of balanced and imbalanced systems a…
Signatures of unconventional pairing in spin-imbalanced one-dimensional few-fermion systems
Daniel Pęcak, Tomasz Sowiński
A system of a few attractively interacting fermionic Li atoms in one-dimensional harmonic confinement is investigated. Non-trivial inter-particle correlations induced by intera…
Geometry-induced entanglement in a mass-imbalanced few-fermion system
Damian Włodzyński, Daniel Pęcak, Tomasz Sowiński
Many-body systems undergoing quantum phase transitions reveal substantial growth of non-classical correlations between different parties of the system. This behavior is manifested…
Experimentally accessible invariants encoded in interparticle correlations of harmonically trapped ultra-cold few-fermion mixtures
Daniel Pęcak, Mariusz Gajda, Tomasz Sowiński
System of a two-flavor mixture of ultra-cold fermions confined in a one-dimensional harmonic trap is studied in the frame of the center of mass. We present a numerical method of ob…
Two-flavor mixture of a few fermions of different mass in a one-dimensional harmonic trap
Daniel Pęcak, Mariusz Gajda, Tomasz Sowiński
A system of two species of fermions of different mass confined in a one-dimensional harmonic trap is studied with an exact diagonalization approach. It is shown independently on th…