11-15 July 2016
University of Stavanger
Europe/Oslo timezone

Analytic gravitational wave spectrum from bubble collisions

14 Jul 2016, 17:00
30m
Ø-110 (University of Stavanger)

Ø-110

University of Stavanger

Arne Rettedal building

Speaker

Masahiro Takimoto (KEK)

Description

We consider gravitational wave production by bubble collisions during a cosmological first-order phase transition. Based on so-called thin-wall and envelope approximations, we estimate gravitational wave spectrum by an analytic way. Our estimation is based on the observation that the two-point correlator of the energy-momentum tensor can be expressed analytically under these assumptions.

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