Phys. Rev. Lett. 84, 5936–5939 (2000)Spinodal Instabilities and the Dark Energy ProblemReceived 18 January 2000; published in the issue dated 26 June 2000 The accelerated expansion of the Universe measured by high redshift Type Ia supernova observations is explained using the nonequilibrium dynamics of naturally soft boson fields. Spinodal instabilities inevitably present in such systems yield a very attractive mechanism for arriving at the required equation of state at late times, while satisfying all the known constraints on models of quintessence. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.5936
DOI:
10.1103/PhysRevLett.84.5936
PACS:
98.80.Cq, 04.62.+v, 95.35.+d
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