Regular and Periodic Tachyon Kinks
نویسنده
چکیده
We search for regular tachyon kinks in an extended model, which includes the tachyon action recently proposed to describe the tachyon field. The extended model that we propose adds a new contribution to the tachyon action, which allows obtaining stable tachyon kinks of regular profile, which may appropriately lead to the singular kink found by Sen sometime ago. Also, under specific conditions we may find periodic array of kink-antikink configurations.
منابع مشابه
Singular tachyon kinks from regular profiles
We demonstrate how Sen’s singular kink solution of the Born-Infeld tachyon action can be constructed by taking the appropriate limit of initially regular profiles. It is shown that the order in which different limits are taken plays an important rôle in determining whether or not such a solution is obtained for a wide class of potentials. Indeed, by introducing a small parameter into the action...
متن کاملOn Tachyon Kinks from the Dbi Action
We consider solitonic solutions of the DBI tachyon effective action for a non-BPS brane in the presence of an electric field. We find that for a constant electric field Ẽ ≤ 1, regular solitons compactified on a circle admit a singular and decompactified limit corresponding to Sen’s proposal provided the tachyon potential satisfies some restrictions. On the other hand for the critical electric f...
متن کاملTachyon Kinks in Boundary String Field Theory
We study tachyon kinks with and without electromagnetic fields in the context of boundary string field theory. For the case of pure tachyon only an array of kinkantikink is obtained. In the presence of electromagnetic coupling, all possible static codimension-one soliton solutions such as array of kink-antikink, single topological BPS kink, bounce, half kink, as well as nonBPS topological kink ...
متن کاملReal-time D-brane condensation
Unstable D-branes or brane-antibrane systems can decay to lower-dimensional branes. In the effective field theory description, the final state branes are defects in the tachyon field which describes the initial instability. We study the dynamical formation of codimension one defects (kinks) using Sen’s ansatz for the tachyon Lagrangian. It is shown that the slope of the kink diverges within a f...
متن کاملNoncommutative Tachyon Kinks as D(p− 1)-branes from Unstable Dp-brane
We study noncommutative (NC) field theory of a real NC tachyon and NC U(1) gauge field, describing the dynamics of an unstable Dp-brane. For every given set of diagonal component of open string metric G0, NC parameter θ0, and interpolating electric field Ê, we find all possible static NC kinks as exact solutions, in spite of complicated NC terms, which are classified by an array of NC kink-anti...
متن کامل