PIRSA:08060186

Gravitational wave background as a probe of reheating temperature of the Universe

(2008). Gravitational wave background as a probe of reheating temperature of the Universe. Perimeter Institute. https://pirsa.org/08060186

Gravitational wave background as a probe of reheating temperature of the Universe. Perimeter Institute, Jun. 06, 2008, https://pirsa.org/08060186 

          @misc{ pirsa_PIRSA:08060186,
            doi = {10.48660/08060186},
            url = {https://pirsa.org/08060186},
            author = {},
            keywords = {Quantum Fields and Strings, Particle Physics, Cosmology},
            language = {en},
            title = {Gravitational wave background as a probe of reheating temperature of the Universe},
            publisher = {Perimeter Institute},
            year = {2008},
            month = {jun},
            note = {PIRSA:08060186 see, \url{https://pirsa.org}}
          }
Talk number
PIRSA:08060186
Collection
Talk Type
Subject
Abstract
\'Thermal history of the universe after big-bang nucleosynthesis (BBN) is well understood both theoretically and observationally, and recent cosmological observations also begin to reveal the inflationary dynamics. However, the epoch between inflation and BBN is scarcely known. In this work we show that the detection of the stochastic gravitational wave background around 1Hz provides useful information about thermal history well before BBN. In particular, the reheating temperature of the universe may be determined by future space-based laser interferometer experiments such as DECIGO and/or BBO if it is around $10^{6-9}$ GeV, depending on the tensor-to-scalar ratio $r$ and dilution factor $F$.\'