Kinks, extra dimensions, and gravitational waves

TL;DR

This paper analyzes gravitational wave signals from kinks on cosmic (super)strings, considering extra dimensions, and finds that kink signals, despite suppression, may be more detectable than cusp signals due to their higher occurrence.

Contribution

It provides a detailed analysis of kink-induced gravitational waves, including effects of extra dimensions, and compares their detectability to cusp signals in cosmic (super)strings.

Findings

Kink signals are suppressed but still potentially detectable.

Kinks are more common than cusps on cosmic strings.

Kink signals may offer better detection prospects for cosmic (super)strings.

Abstract

We investigate in detail the gravitational wave signal from kinks on cosmic (super)strings, including the kinematical effects from the internal extra dimensions. We find that the signal is suppressed, however, the effect is less significant that that for cusps. Combined with the greater incidence of kinks on (super)strings, it is likely that the kink signal offers the better chance for detection of cosmic (super)strings.