188 citations · 747 across the 28 of their papers we have counts for
4 papers · 1 filter
Simulating seeded vacuum decay in a cold atom system
Thomas P. Billam, Ruth Gregory, Florent Michel +1
We propose to test the concept of seeded vacuum decay in cosmology using an analogue gravity Bose-Einstein condensate system. The role of the nucleation seed is played by a vortex…
Excited cosmic strings with superconducting currents
Betti Hartmann, Florent Michel, Patrick Peter
We present a detailed analysis of {\it excited} cosmic string solutions which possess superconducting currents. These currents can be excited inside the string core, and - if the c…
Radial excitations of current-carrying vortices
Betti Hartmann, Florent Michel, Patrick Peter
We report on the existence of a new type of cosmic string solutions in the Witten model with U(1)xU(1) symmetry. These solutions are superconducting with radially excited condensat…
Gravitating superconducting strings with timelike or spacelike currents
Betti Hartmann, Florent Michel
We construct gravitating superconducting string solutions of the U(1)_{local} x U(1)_{global} model solving the coupled system of Einstein and matter field equations numerically. W…