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 …

As of today, there exist consistent, gauge-invariant string field theories describing all string
theories: bosonic open and closed strings, open superstrings, heterotic strings, and type II …

Quantum theory seems to be a universal framework for physical theories. In fact, most of the
interactions found in Nature are already successfully accommodated into this framework …

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 …

D-branes have turned out to be a key ingredient in our present understanding of the
structure of string theory. Interestingly, the fact that D-branes contain gauge fields localized …

It has been conjectured that at a stationary point of the tachyon potential for the D-brane of
bosonic string theory, the negative energy density exactly cancels the D-brane tension. We …

Chiral fermions naturally appear at intersections of branes at angles. We propose a string
scenario in which different SM gauge interactions propagate on different (intersecting) brane …

This article reviews the matrix model of M theory. M theory is an 11-dimensional quantum
theory of gravity that is believed to underlie all superstring theories. M theory is currently the …

By explicit evaluation of certain disk S-matrix elements in the presence of background B-flux,
we find coupling of two open string tachyons to gauge field, graviton, dilaton or Kalb …