Gravitational Wave Probes of Physics Beyond Standard Model

Session

Topological Defects

GWTD

Jul 12, 2021, 1:50 PM

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.

21. Neutrino Mass, Leptogenesis, GUT

Hitoshi Murayama (University of California Berkeley (US))

7/12/21, 2:00 PM

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...

12. Gravitational waves from metastable cosmic strings

Kai Schmitz (CERN)

7/12/21, 2:40 PM

Cosmic strings, which form during cosmological U(1)-symmetry-breaking phase transitions, represent an intriguing potential source of stochastic gravitational waves from the early Universe. While most studies thus far have focused on stable cosmic strings whose stability is guaranteed by the topology of the underlying vacuum structure, many Grand Unified Theories (GUTs) actually predict the...

51. Probing cosmic superstrings with gravitational waves

Lara Sousa (IA/CAUP)

7/12/21, 3:05 PM

We discuss the stochastic gravitational wave background generated by cosmic superstring networks and show that heavier string types may leave distinct signatures on this spectrum. We show that these signatures may be within the reach of present and upcoming gravitational wave detector (particularly of pulsar timing arrays). This demonstrates that approximating the gravitational wave spectrum...

22. The Stochastic Gravitational Wave Background from Cosmic String Networks

Jose Juan Blanco-Pillado (IKERBASQUE & UPV/EHU)

7/12/21, 3:30 PM

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...

29. Probing particle physics and cosmology with cosmic strings and GWs

Daniele Steer

7/12/21, 4:10 PM

In this talk we will first review the LIGO-Virgo O3 constraints on cosmic strings, both from the stochastic GW background (SGWB) and from a burst search. We will then go beyond the standard cosmic string scenario, and discuss (i) the effects of possible particle emission from cusps and kinks, both on the loop distribution as well as on different observables (the stochastic GW background as...

11. Nonlinear gravitational-wave memory from cusps and kinks on cosmic strings

Mr Alexander Jenkins (King's College London)

7/12/21, 4:50 PM

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...

10. Searching for gravitational wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array

Sachiko Kuroyanagi

7/12/21, 5:15 PM

Cosmic strings are one of the gravitational wave (GW) sources that can be probed by pulsar timing arrays (PTAs). In this work, we develop a detection algorithm for the GW burst from a cusp on a cosmic string and apply it to a Parkes PTA data release. We find four events with a false alarm probability of less than 1\%. However further investigation shows that all of these are likely to be...

20. Cosmic Archaeology with gravitational waves from (axion) cosmic strings

Prof. Yanou Cui (University of California, Riverside)

7/12/21, 5:40 PM

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...

28. TBA

Lara Sousa (IA/CAUP)