Speaker
Gonzalo Villa
Description
Using flat space string amplitudes and recently computed equilibration rates for a thermal gas of highly excited strings, we argue that a Hagedorn phase could have occured in the early Universe with a bath of open strings dominating the energy density. These strings would predominantly decay in Standard Model fields, providing a successful reheating, and would release a gravitational wave spectrum whose amplitude peaks at a frequency similar to the Cosmic Gravitational Wave Background predicted by the Standard Model, but with a generically larger amplitude.
Authors
Prof.
Andrew Frey
(University of Winnipeg)
Dr
Anshuman Maharana
(Harish-Chandra research institute)
Fernando Quevedo Rodriguez
(University of Cambridge (GB))
Gonzalo Villa
Dr
Ratul Mahanta
(University of Winnipeg)
