Cosmology with tachyon field as dark energy

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A kinematical approach to dark energy studies (2006, background): “…et al. 1998; Zlatev et al. 1999; Copeland et al. 1998; Steinhardt et al. 1999; Barreiro et al. 2000), Kessence (Chiba et al. 2000; Armendariz-Picon et al. 2000, 2001), tachyon fields (Bagla et al. 2003; Copeland et al. 2005) and Chaplygin gas models (Kamenshchik et al. 2001; Bento et al. 2002).”
Structure formation in inhomogeneous dark energy models (2004, background): “Given that 72/α2 = 24(1 − m) and that 1 + z ∝ t−2/3, we obtain the time dependence δ ∝ tm , where m = (√1 + 24 m−1)/6, found by Bagla et al. (2003), however, in the context of a scaling tachyon.1 In an Einstein–de Sitter Universe (i.e. α = ∞), solving equation (7) with 1 + z i = 108 for an initial…”
Cluster number counts dependence on dark energy inhomogeneities and coupling to dark matter (2005, background): “In Padmanabhan & Choudhury (2002); Padmanabhan (2002); Bagla et al (2003) and Causse (2003) more exotic models, based on tachyon fields, have been discussed and they argued that the quintessence equation of state is scale– dependent.”
Dynamical systems applied to cosmology: Dark energy and modified gravity (2017, background): “Applications of tachyonic scalar fields to late time cosmology were considered soon after they arose from high-energy physics (Padmanabhan, 2002; Gibbons, 2002, 2003; Bagla et al., 2003; Gorini et al., 2004).”