Tachyon condensation due to domain-wall annihilation in Bose-Einstein condensates

Hiromitsu Takeuchi, Kenichi Kasamatsu, Makoto Tsubota, Muneto Nitta

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


We show theoretically that a domain-wall annihilation in two-component Bose-Einstein condensates causes tachyon condensation accompanied by spontaneous symmetry breaking in a two-dimensional subspace. Three-dimensional vortex formation from domain-wall annihilations is considered a kink formation in subspace. Numerical experiments reveal that the subspatial dynamics obey the dynamic scaling law of phase-ordering kinetics. This model is experimentally feasible and provides insights into how the extra dimensions influence subspatial phase transition in higher-dimensional space.

Original languageEnglish
Article number245301
JournalPhysical review letters
Issue number24
Publication statusPublished - 2012 Dec 11

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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