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Informal Pizza SeminarHolographic CosmologyThorsten BattefeldBrown UniversityThe Holographic Universe is a model of the very early Universe put forward by Banks and Fischler and based on the holographic principle of t`Hooft and Susskind. Heuristically it can be described by a black hole fluid with an equation of state p=ρ. After a short review of the model, we will focus on the spectrum of perturbations generated during the holographic phase, which turns out to be not scale invariant due to infrared modes that enter the Hubble Horizon. Therefore either a longer period of Inflation as originally anticipated is needed to be in agreement with observation, or the heuristic model as an ideal p=ρ fluid has to be modified.
Tuesday, September 21st 2004, 13:00
Ernest Rutherford Physics Building, room 326 |