Spinflation from Geometric Tachyon
نویسنده
چکیده
We study the assisted inflation scenario from the rolling of N BPS D3-brane into the NS5-branes, on a transverse geometry of R3 × S1, coupled to four dimensional gravity. We assume that the branes are distributed along S1 and the probe D3branes spin along R3 plane. Qualitatively this process is similar to that of N-tachyon assisted inflation on unstable D-branes. We further study the spinflation scenario numerically and analyze its effect. e-mail: [email protected] e-mail: [email protected]
منابع مشابه
Geometric Tachyon to Universal Open String Tachyon
A system of k Neveu-Schwarz (NS) 5-branes of type II string theory with one transverse direction compactified on a circle admits various unstable D-brane systems, – some with geometric instability arising out of being placed at a point of unstable equilibrium in space and some with the usual open string tachyonic instability but no geometric instability. We discuss the effect of NS 5-branes on ...
متن کاملOn Decay of K-theory
Closed string tachyon condensation resolves the singularities of nonsupersymmetric orbifolds, however the resolved space typically has fewer D-brane charges than that of the orbifold. The description of the tachyon condensation process via a gauged linear sigma model enables one to track the topology as one passes from the sigma model’s “orbifold phase” to its resolved, “geometric phase,” and t...
متن کاملSpinflation and Cycling Branes in Warped Throats
The implications of brane motion in angular directions of Calabi-Yau flux compactifications are discussed from the point of view of an observer living on the worldvolume of the brane and from the point of view of an observer living elsewhere in the three non-compact dimensions. The brane observer can experience cosmological bounces and cyclic behavior of the scale factor induced by centrifugal ...
متن کاملAssisted Inflation from Geometric Tachyon
We study the effect of rolling of N D3-branes in the vicinity of NS5-branes. We find out that this system coupled with the four dimensional gravity gives the slow roll assisted inflation of the scalar field theory. Once again this expectation is exactly similar to that of N -tachyon assisted inflation on unstable D-branes. e-mail: [email protected] e-mail: [email protected]
متن کاملGeometrical Tachyon Kinks and NS 5 Branes
We further investigate the NS5 ring background using the tachyon map. Mapping the radion fields to the rolling tachyon helps to explain the motion of a probe Dp-brane in this background. It turns out that the radion field becomes tachyonic when the brane is confined to one dimensional motion inside the ring. We find explicit solutions for the geometrical tachyon field that describe stable kink ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008