Tachyons and cosmology

Narlikar, J. V. ; Sudarshan, E. C. G. (1976) Tachyons and cosmology Monthly Notices of the Royal Astronomical Society, 175 . pp. 105-116. ISSN 0035-8711

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Official URL: http://adsabs.harvard.edu/abs/1976MNRAS.175..105N


The propagation of tachyons in an expanding universe is discussed. It is shown that a primordial tachyon in the big-bang universe cannot survive unless it had very large energy initially. In an indefinitely expanding universe, the tachyon trajectory turns back in time. This time barrier is found to exist even in the quantum-mechanical discussion of tachyons. This property is used to set limits on the mass of a tachyon. The possible astronomical checks on the hypothesis that neutrinos or photons may be tachyonic are also discussed.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Astronomical Models; Big Bang Cosmology; Tachyons; Neutrinos; Particle Energy; Particle Mass; Photons
ID Code:51043
Deposited On:27 Jul 2011 12:46
Last Modified:27 Jul 2011 12:46

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