Fredagskollokvium: Probing the early universe with LISA Gravitational Wave Detector
RICCIARDONE, Angelo, University of Stavanger, Norway.
Primordial Gravitational Waves (GWs) represent a key test of inflation and they are a unique tool to explore the physics and the microphysics of the early Universe. After the recent GW detection by the advanced LIGO (aLIGO) detector the next target of modern cosmology is the detection of primordial GWs. Even if the main probe of primordial GWs is the Cosmic Microwave Background, we will see in this talk how we can extract information about primordial GWs at smaller scale. In particular the space-borne LISA interferometer, in addiction to detection and characterization of GWs of astrophysical origin, will give compelling information about possible sources of GWs in the early Universe.
In this colloquium I will briefly review the physics of primordial gravitational waves and then I will mainly discuss on the promise of LISA measurements for giving information about the physics of primordial Universe.