Abstract
TOPOLOGICAL defects formed during a rapid symmetry-breaking phase transition in the early Universe1,2 could be responsible for seeding large-scale structure, for the anisotropy of the microwave background radiation, and for the predominance of matter over antimatter3,4. The theory describing this cosmological phase transition is formally analogous to that describing the transition to the superfluid state in liquid 3He, so that in principle the process of cosmological defect formation can be modelled in the laboratory. Here we report the results of an experiment in which the 'primordial fireball' is mimicked using a neutron-induced nuclear reaction (n + 3He → p + 3He + 0.76 MeV) to heat small regions of superfluid 3He above the superfluid transition temperature. These bubbles of normal liquid cool extremely rapidly, and we find that their transition back to the superfluid state is accompanied by the formation of a random network of vortices (the superfluid analogue of cosmic strings). We monitor the evolution of this defect state by rotating the superfluid sample, allowing vortices to escape from the network and thus be probed individually. Our results provide clear confirmation of the idea that topological defects form at a rapid second-order phase transition, and give quantitative support to the Kibble–Zurek mechanism5,6 of cosmological defect formation.
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References
Zeldovich, Ya. B., Kobzarev, I. Yu. & Okun, L. B. Zh. éksp. teor. Fiz. 67, 3–11 (1974); (JETP 40, 1–5 (1974).).
Kibble, T. W. B. J. Phys. A9, 1387–1398 (1976).
Vilenkin, A. & Shellard, E. P. S. Cosmic Strings and Other Topological Defects (Cambridge Univ. Press, 1994).
Hindmarsh, M. B. & Kibble, T. W. B. Rep. Prog. Phys. 58, 477–562 (1995).
Zurek, W. H. Nature 317, 505–508 (1985).
Zurek, W. H. Los Alamos preprint LA-UR-95-2269 (1995); Phys. Rep. (in the press); Acta physica polonica B24, 1301–1311 (1993).
Chuang, I., Durrer, R., Turok, N. & Yurke, B. Science 251, 1336–1342 (1991).
Bowick, M. J., Chander, L., Schiff, E. A. & Srivastava, A. M. Science 263, 943–945 (1994).
Hendry, P. C., Lawson, N. S., Lee, R. A. M., McClintock, P. V. E. & Williams, C. D. H. Nature 368, 315–317 (1994).
Volovik, G. E. & Vachaspati, T. Int. J. mod. Phys. B10, 471–521 (1996).
Parts, Ü et al. Europhys. Lett. 31, 449–454 (1995).
Turok, N. in Formation and Interaction of Topological Defects (eds Davis, A. C. & Brandenberger, R.) 283–301 (Plenum, New York, 1995).
Schiffer, P. & Osheroff, D. D. Rev. mod. Phys. 67, 491–501 (1995).
Vollhardt, D. & Wölfle, P. The Superfluid Phases of3He (Taylor & Francis, London, 1990).
Vachaspati, T. & Vilenkin, A. Phys. Rev. D30, 2036–2045 (1984).
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Ruutu, V., Eltsov, V., Gill, A. et al. Vortex formation in neutron-irradiated superfluid 3He as an analogue of cosmological defect formation. Nature 382, 334–336 (1996). https://doi.org/10.1038/382334a0
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DOI: https://doi.org/10.1038/382334a0
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