25 citations · 48 across the 2 of their papers we have counts for
5 papers
Ground-State Dirac Monopole
Emmi Ruokokoski, Ville Pietilä, Mikko Möttönen
We show theoretically that a monopole defect, analogous to the Dirac magnetic monopole, may exist as the ground state of a dilute spin-1 Bose-Einstein condensate. The ground-state…
Pairing instabilities in quasi-two-dimensional Fermi gases
Ville Pietilä, David Pekker, Yusuke Nishida +1
We study non-equilibrium dynamics of ultracold two-component Fermi gases in low-dimensional geometries after the interactions are quenched from weakly interacting to strongly inter…
Finite-temperature phase transitions in quasi-two-dimensional spin-1 Bose gases
Ville Pietilä, Tapio P. Simula, Mikko Möttönen
Recently, the Berezinskii-Kosterlitz-Thouless transition was found to be mediated by half-quantum vortices (HQVs) in two-dimensional (2D) antiferromagnetic Bose gases [Phys. Rev. L…
Core sizes and dynamical instabilities of giant vortices in dilute Bose-Einstein condensates
Pekko Kuopanportti, Emil Lundh, Jukka A. M. Huhtamäki +2
Motivated by a recent demonstration of cyclic addition of quantized vorticity into a Bose-Einstein condensate, the vortex pump, we study dynamical instabilities and core sizes of g…
Creation of Dirac monopoles in spinor Bose-Einstein condensates
Ville Pietilä, Mikko Möttönen
We demonstrate theoretically that using standard external magnetic fields, one can imprint point-like topological defects to the spin texture of a dilute Bose-Einstein condensate.…