ITC Colloquium - Anna Ijjas


Thursday, October 28, 2021, 11:00am to 12:20pm


"Entropy, Black Holes, and the Early Universe"

Emerging from a big bang in which gravity is strongly coupled and quantum fluctuations of stress-energy and spacetime are both large, the natural expectation is that the total entropy should be nearly maximal and equally distributed among both stress-energy and gravitational degrees of freedom. However, the observed entropy distribution on the last scattering surface is puzzlingly different, as Penrose has emphasized. In this talk, I will introduce the cosmological entropy problem and discuss our recent proposal to evade it.
See also: Colloquium, 2021-22