Dynamics of Carroll strings

Dynamics of chaotic strings

Fluid Dynamics of NSR Strings

We show that the renormalization group flows of the massless superstring modes in the presence of fluctuating D-branes satisfy the equations of fluid dynamics. In particular, we show that the D-brane’s U(1) field is related to the velocity function in the Navier-Stokes equation while the dilaton plays the role of the passive scalar advected by the turbulent liquid. This leads us to suggest a po...

Dynamics of ( n , 1 ) Strings

An (n, 1) string is a bound state of a D-string and n fundamental strings. It may be described by a D-string with a world volume electric field turned on. As the electric field approaches its critical value, n becomes large. We calculate the 4-point function for transverse oscillations of an (n, 1) string, and the two-point function for massless closed strings scattering off an (n, 1) string. I...

Perturbative Dynamics of Fractional Strings on Multiply Wound D-strings

Fractional strings in the spectrum of states of open strings attached to a multiply wound D-brane is explained. We first describe the fractional string states in the low-energy effective theory where the topology of multiple winding is encoded in the gauge holonomy. The holonomy induces twisted boundary conditions responsible for the fractional moding of these states. We also describe fractiona...

Dynamics of Cosmic Strings in Schwarzschild Spacetime

Cosmic strings are topological defects thought to have formed early in the life of the universe. If such objects exist, a study of their interaction with black holes is of interest. The equations of motion of a cosmic string have the form of highly non-linear wave equations. General analytic solutions, except for motion in certain backgrounds such as flat and shockwave spacetimes, remain unknow...