In this review we describe our current understanding of the properties of open string
tachyons on an unstable D-brane or brane–antibrane system in string theory. The various …

We review the particle theory origin of inflation and curvaton mechanisms for generating
large scale structures and the observed temperature anisotropy in the cosmic microwave …

We discuss construction of classical time dependent solutions in open string (field) theory,
describing the motion of the tachyon on unstable D-branes. Despite the fact that the string …

We propose a field theory for describing the tachyon on a brane–antibrane system near the
minimum of the potential. This field theory realizes two known properties of the tachyon …

The tachyon effective field theory describing the dynamics of a non-Bogomol'nyi-Prasad-
Sommerfield (BPS) D-brane in superstring theory has an infinitely thin but finite tension kink …

Both in string field theory and in p-adic string theory the equations of motion involve infinite
number of time derivatives. We argue that the initial value problem is qualitatively different …

We propose a new interpretation of the c= 1 matrix model as the world-line theory of N
unstable D-particles, in which the hermitian matrix is provided by the non-abelian open …

In this paper we give the boundary string field theory description of brane-antibrane systems.
From the world-sheet action of brane-antibrane systems we obtain the tachyon potential and …

Brane inflation is a specific realization of the inflationary universe scenario in the early
universe within the brane world framework in string theory. The naturalness and robustness …

We complete the construction of vacuum string field theory by proposing a canonical choice
of ghost kinetic term--a local insertion of the ghost field at the string midpoint with an infinite …