Cosmological evolution of the rolling tachyon

By G. W. Gibbons. 2002

518 citations recorded by the source corpus.

Abstract The cosmological effects of the tachyon rolling down to its ground state are discussed by coupling a simple effective field theory for the tachyon field to Einstein gravity. As the tachyon rolls down to the minimum of its potential the universe expands. Depending upon initial conditions, the scale factor may or may not start off accelerating, but ultimately it ceases to do so and the final flat spacetime is either static in the rest frame of the tachyon (if k =0) or (if k =−1) given by the Milne model.

Subfields: Astronomy and Astrophysics, Atmospheric Science, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ba7d0c365f0af99b1206762e305fde2a853991cf

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Atmospheric Science

In Nuclear and High Energy Physics

Citations in the corpus

WMAP constraints on low redshift evolution of dark energy (2004, background): “…Chiba 2002; Malquarti et al. 2003; Chimento & Feinstein 2004; Scherrer 2004), tachyons (Choudhury et al. 2002; Frolov, Kofman & Starobinsky 2002; Gibbons 2002; Padmanabhan 2002; Shiu & Wasserman 2002; Bagla, Jassal & Padmanabhan 2003; Gibbons 2003a; Jassal 2004; Kim, Kim & 2003; Sen 2003;…”
Tachyons, scalar fields, and cosmology (2003, background): “The tachyon has been intensively studied during the last few years also in application to cosmology [8]–[16]; in this case one usually takes Sen’s effective action [5] for granted and studies its cosmological consequences without worrying about the string-theoretical origin of the action itself.”
Caustics in Tachyon Matter and Other Born-Infeld Scalars (2002, background): “1) triggered significant interest in the investigation of the role of tachyons in cosmology [5, 6, 7, 8, 9] and field theory of tachyon [10].”
WMAP and the generalized Chaplygin gas (2003, background): “Recently, the tachyon field (with V = V (ϕ)) motivated from string theory has received a lot of attention (Sen 2002, Gibbons 2002, Padmanabhan 2002).”
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).”
S brane solutions in supergravity theories (2002, background): “Very recently Sen [8, 9] (see also [10]) has constructed a conformal field theory description of dynamical open string tachyon condensation.”
Power-Law Inflation from the Rolling Tachyon (2002, background): “The Friedman equation and the entropy conservation equation take the form [5], [6]:”
Scalar speed limits and cosmology: Acceleration from D-cceleration (2003, background): “A particularly well-studied example occurs in the effective field theory describing the decay of branes and antibranes leading to “tachyon matter” [5, 6, 7] and the associated cosmology [8, 9].”