No Firewalls in Holographic Space-Time or Matrix Theory

Understand

We use the formalisms of Holographic Space-time (HST) and Matrix Theory[11] to investigate the claim of [1] that old black holes contain a firewall, i.e.

• an in-falling detector encounters highly excited states at a time much shorter than the light crossing time of the Schwarzschild radius.
• In both formalisms there is no dramatic change in particle physics inside the horizon until a time of order the Schwarzschild radius.
• The Matrix Theory formalism has been shown to give rise to an S-matrix, which coincides with effective supergravity for an infinite number of low energy amplitudes.