22–26 Aug 2022
Rio de Janeiro
America/Sao_Paulo timezone

Dimensional deformation of sine-Gordon breathers into oscillons

Not scheduled
20m
Rio de Janeiro

Rio de Janeiro

Vice-Governador Rúbens Berardo street, 100 - Gávea Rio de Janeiro - 22451-070
Plenary/Parallel talk Inflation and the primordial universe Parallel Session Lecture Room

Speaker

Jose Tomas Galvez Ghersi (Canadian Institute for Theoretical Astrophysics)

Description

Oscillons are localized field configurations oscillating in time with lifetimes orders of magnitude longer than their oscillation period. This talk shows the deformation of one-dimensional breather solutions of the sine-Gordon (SG) equation into oscillons. SG equation is deformed by a radial damping term present in the d-dimensional Laplacian. Oscillons are evaluated (a) in a regime of perturbative corrections to the 1-D field equations, and (b) in two and three spatial dimensions. Our results show that we can only connect SG breathers and oscillons in the perturbative regime. Moreover, we show the existence of solutions with amplitude modulation, which are compatible with critical behavior near the energy threshold where solutions are no longer stable. Beyond the perturbative regime, we find that enlarging the initial parameter space is necessary to increase the availability of stable oscillons.

Primary authors

Dr Jonathan Braden (Canadian Institute for Theoretical Astrophysics) Jose Tomas Galvez Ghersi (Canadian Institute for Theoretical Astrophysics)

Presentation materials

There are no materials yet.