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G.W. Gibbons Cosmological Evolution of the Rolling Tachyon
2002
Earlier work this paper cites.
Gibbons, Gary and Hashimoto, Koji and Yi, Piljin Tachyon condensates, Carrollian contraction of Lorentz group, and fundamental strings
2002
Earlier work this paper cites.

Similar

A. Sen, Time and Tachyon
2003
Cited alongside, same era.
G.W. Gibbons Thoughts on Tachyon Cosmology
2003
Cited alongside, same era.

Then

V. Gorinni, A. Kamenshchik, U. Moschella, V. Pasquier Tachyons, Scalar Fields and Cosmology
2004
Later among the works it cites.
H. García Compeán, G. García Jiménez, O. Obregón and C. Ramírez Tachyon driven quantum cosmology in string theory
2005
Later among the works it cites.

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2010

Unveiling the tachyon dynamics in the Carrollian limit

Escamilla-Rivera, Celia, Garcia-Jimenez, G., Obregon, O.

Understand

We briefly study the dynamics at classical level of the Carrollian limit, with vanishing speed of light and no possible propagation of signals, for a simply effective action in a flat space with a open string tachyon as scalar field.

The canonical analysis of the theory indicates that the equation of motion is of Dirac type contrary to non-relativistic case where the equation is of Schrodinger type.
The ultimate intention is to analize the latter case with electromagnetic fluxes finding that in this case the open string tachyon cannot be interpreted as time.