63 citations · 186 across the 16 of their papers we have counts for
15 papers · 1 filter
Many-body state and dynamic behaviour of the pair-correlation function of a small Bose-Einstein condensate confined in a ring potential
A. Roussou, J. Smyrnakis, M. Magiropoulos +1
We investigate the many-body state and the static and the dynamic behaviour of the pair-correlation function of a Bose-Einstein condensate with a finite atom number, which is confi…
Transition from the mean-field to the bosonic Laughlin state in a rotating Bose-Einstein condensate
G. Vasilakis, A. Roussou, J. Smyrnakis +3
We consider a weakly-interacting Bose-Einstein condensate that rotates in either a harmonic, or a weakly-anharmonic trapping potential. Performing numerical calculations, we invest…
Fragility of the Laughlin state in an anharmonically-trapped Bose-Einstein condensate
A. Roussou, J. Smyrnakis, M. Magiropoulos +3
When a Bose-Einstein condensate rotates in a purely harmonic potential with an angular frequency which is close to the trap frequency, its many-body state becomes highly correlated…
Excitation spectrum of a mixture of two Bose gases confined in a ring potential with interaction asymmetry
A. Roussou, J. Smyrnakis, M. Magiropoulos +5
We study the rotational properties of a two-component Bose-Einstein condensed gas of distinguishable atoms which are confined in a ring potential using both the mean-field approxim…
Rotating Bose-Einstein condensates with a finite number of atoms confined in a ring potential: Spontaneous symmetry breaking, beyond the mean-field approximation
A. Roussou, J. Smyrnakis, M. Magiropoulos +2
Motivated by recent experiments on Bose-Einstein condensed atoms which rotate in annular/toroidal traps we study the effect of the finiteness of the atom number on the states o…
Dimensional reduction in Bose-Einstein condensed clouds of atoms confined in tight potentials of any geometry and any interaction strength
P. Sandin, M. Ögren, M. Gulliksson +3
Motivated by numerous experiments on Bose-Einstein condensed atoms which have been performed in tight trapping potentials of various geometries (elongated and/or toroidal/annular),…
Hysteresis and metastability of Bose-Einstein condensed clouds of atoms confined in ring potentials
A. Roussou, G. D. Tsibidis, J. Smyrnakis +4
We consider a Bose-Einstein condensed cloud of atoms which rotate in a toroidal/annular potential. Assuming one-dimensional motion, we evaluate the critical frequencies associated…
Persistent currents in a two-component Bose-Einstein condensate confined in a ring potential
J. Smyrnakis, M. Magiropoulos, Nikolaos K. Efremidis +1
We present variational and numerical solutions for the problem of stability of persistent currents in a two-component Bose-Einstein condensate of distinguishable atoms which rotate…
Mean-field yrast spectrum and persistent currents in a two-component Bose gas with interaction asymmetry
Z. Wu, E. Zaremba, J. Smyrnakis +3
We analyze the mean-field yrast spectrum of a two-component Bose gas in the ring geometry with arbitrary interaction asymmetry. Of particular interest is the possibility that the y…
Solitary-wave solutions in binary mixtures of Bose-Einstein condensates under periodic boundary conditions
J. Smyrnakis, M. Magiropoulos, G. M. Kavoulakis +1
We derive solitary-wave solutions within the mean-field approximation in quasi-one-dimensional binary mixtures of Bose-Einstein condensates under periodic boundary conditions, for…
Excitation spectrum of a two-component Bose-Einstein condensate in a ring potential
J. Smyrnakis, M. Magiropoulos, A. D. Jackson +1
A mixture of two distinguishable Bose-Einstein condensates confined in a ring potential has numerous interesting properties under rotational and solitary-wave excitation. The lowes…
Solitary waves and yrast states in Bose-Einstein condensed gases of atoms
A. D. Jackson, J. Smyrnakis, M. Magiropoulos +1
Considering a Bose-Einstein condensed gas confined in one dimension with periodic boundary conditions, we demonstrate that, very generally, solitary-wave and rotational excitations…
Solitary waves of Bose-Einstein condensed atoms confined in finite rings
J. Smyrnakis, M. Magiropoulos, G. M. Kavoulakis +1
Motivated by recent progress in trapping Bose-Einstein condensed atoms in toroidal potentials, we examine solitary-wave solutions of the nonlinear Schrödinger equation subject to p…
Solitary waves in mixtures of Bose gases confined in annular traps
J. Smyrnakis, M. Magiropoulos, G. M. Kavoulakis +1
A two-component Bose-Einstein condensate that is confined in a one-dimensional ring potential supports solitary-wave solutions, which we evaluate analytically. The derived solution…
Mixtures of Bose Gases Confined in a Ring Potential
J. Smyrnakis, S. Bargi, G. M. Kavoulakis +3
The rotational properties of a mixture of two distinguishable Bose gases that are confined in a ring potential provide novel physical effects that we demonstrate in this study. Per…