Gravitational wave production via cosmological first order phase transition

Gravitational waves can be produced during cosmological first order phase transition in the early universe and may be observed by future space interferometers Excitingly planned GW detectors are sensitive to phase transition around TeV PeV scale and such GWs offer one of the promising tools to prove new physics beyond the standard model In this talk I will show basic physics of cosmological first order phase transition paying particular attention to gravitational wave production Then I will briefly introduce my recent works related to this topics