Searching for​ ​particle physics​ ​signals​ ​in the cosmological collider via​ ​gravitational wave​ ​surveys

At early universe the temperature was extremely high such that the energy scale could easily reach the electroweak regime or beyond. Therefore, our universe could have been a super collider in her baby time. If particle theories about symmetry breaking were correct, which​ for sure are true below TeV, we would expect that there were many phase transitions that occurred in the ​first several seconds after the big bang. Due to these phase​ ​transitions, there would have been a large amount of gravitational wave radiations produced. These gravitational wave spectra could be accessible in various forthcoming astronomical surveys such as eLISA and BBO. Therefore, our study demonstrate that it could become possible to explore signals of collider physics in astronomical experiments by examining gravitational waves at early universe.