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DC Field | Value | Language |
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dc.contributor.author | Tomaschitz, R | - |
dc.date.accessioned | 2008-09-04T11:06:06Z | - |
dc.date.available | 2008-09-04T11:06:06Z | - |
dc.date.issued | 1998-04 | - |
dc.identifier.citation | International Journal of Modern Physics D, Vol. 7, No. 2, pp. 279 - 298 | en |
dc.identifier.issn | 0218 - 2718 | - |
dc.identifier.uri | http://hdl.handle.net/2248/3359 | - |
dc.description | Restricted Access | - |
dc.description.abstract | Superluminal signal transfer is studied in the context of a preferred cosmic frame of reference provided by the galactic background. The receding galaxies constitute a frame of absolute rest, in which the energy of tachyons (faster-than-light particles) is unambiguously defined as a positive quantity. The causality violation which arises in relativistic tachyonic theories is avoided. The author defines interactions of particles and tachyons in terms of elastic head-on collisions and energy-momentum conservation. To compare the theory developed with existing relativistic theories, tachyons are studied at first in a Minkowski universe, and the causality of a superluminal communication process is analyzed. Then the author discusses the dynamics of tachyons in a Robertson-Walker universe with linear expansion factor and negatively curved three-space. He points out the consequences that the space expansion has on tachyons, like a finite life-time in the frame of absolute rest, and multiple images in the rest frames of moving observers. | en |
dc.language.iso | en | en |
dc.publisher | World Scientific | en |
dc.relation.uri | http://dx.doi.org/10.1142/S021827189800022X | en |
dc.subject | Cosmology | en |
dc.subject | Radiative Transfer | en |
dc.subject | Robertson-Walker Metric | en |
dc.title | Tachyons in Robertson-Walker cosmology | en |
dc.type | Article | en |
Appears in Collections: | IIAP Publications |
Files in This Item:
File | Description | Size | Format | |
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Tachyons in Robertson-Walker cosmology.pdf Restricted Access | Restricted Access | 667.42 kB | Adobe PDF | View/Open Request a copy |
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