Constrained Dynamics of Tachyon Field in FRWL Spacetime.

Marko A. Dimitrijević,Dragoljub D. Dimitrijević,Goran Djordjevic,Milan Milošević

Facta Universitatis - Series: Physics, Chemistry and Technology（2019）

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摘要

In this paper we continue study of tachyon scalar field described by a Dirac-Born-Infeld (DBI) type action with constraints in the cosmological context. The proposed extension of the system introducing an auxiliary field in the minisuperspace framework is discussed. A new equivalent set of constraints is constructed, satisfying the usual regularity conditions.

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