### Conveners

#### Topological Defects: Topological Defects

- Jose Miguel No

#### Topological Defects: Topological Defects

- Ranjan Laha (Indian Institute of science (IN))

#### Topological Defects: Welcome Note by Dr. John Ellis

- There are no conveners in this block

#### Topological Defects: discussion session

- Marek Lewicki (University of Warsaw)

#### Topological Defects: Break

- There are no conveners in this block

#### Topological Defects: Break

- There are no conveners in this block

### Description

Probing BSM via GW arising due to formation of topological defects.

I discuss how the origin of neutrino mass and baryon asymmetry may lead to gravitational wave signal from cosmic strings. In some cases of symmetry breaking patterns from GUT, cosmic strings may come with magnetic monopoles or domain walls, making the gravitational wave spectrum richer. We may learn how the GUT is broken if the gravitational wave signal can be mapped out for a wide range of...

In this talk we will review the different ingredients that go into the

calculation of the stochastic gravitational wave background from cosmic strings and explain how one can extract the relevant information by performing large scale cosmological simulations of Nambu-Goto strings. Finally, we will also discuss

how current efforts to take into account gravitational backreaction can impact on...

The nonlinear memory effect is a fascinating prediction of general relativity (GR), in which oscillatory gravitational-wave (GW) signals are generically accompanied by a monotonically-increasing strain which persists in the detector long after the signal has passed. This effect is directly accessible to GW observatories, and presents a unique opportunity to test GR in the dynamical and...

In this talk I will discuss two important aspects of cosmology and particle physics that can be probed with GW signals from cosmic strings: probing the pre-BBN primordial dark age and axion physics. Gravitational waves (GWs) originating from the dynamics of a cosmic string network have the ability to probe many otherwise inaccessible properties of the early universe. In particular, I will...