A window for cosmic strings

Understand

Particle emission, in addition to gravitational radiation from cosmic string loops, affects the resulting loop distribution and hence the corresponding observational consequences of cosmic strings.

• Here we focus on two models in which loops of length $\ell$ are produced from the infinite string network with a given power-law.
• For both models we find that, due to particle production, the Stochastic Gravitational Wave Background (SGWB) is cut off outside the region of parameter space probed by any current or planned GW experiment.
• Therefore the present constraints from the LIGO-Virgo-Kagra (LVK) collaboration still hold.