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Scalar-field dark energy models for tachyon fields are often regarded as aneffective description of an underlying theory of dark energy. In this paper, wepropose the agegraphic dark energy model in tachyon cosmology by interactionbetween the components of the dark sectors. In the formalism, the interactionterm emerges from the tachyon field nonminimally coupled to the matterLagrangian in the model rather than being inserted into the formalism as anexternal source. The model is constrained by the observational data. Based onthe best fitted parameters in both original and new agegraphic dark energyscenarios, the model is tested by Sne Ia data. The tachyon potential andtachyon field are reconstructed and coincidence problem is revisited.

Interacting agegraphic dark energy model in tachyon cosmology coupled to matter