Abstract: In a chaotic system, an initial small perturbation will eventually affect the whole system. In certain many-body systems, this effect is mediated by a “scramblon” field. In large N limit, scramblon exchange dominates, while self-interactions are suppressed by 1/N. But because the scramblon propagator grows exponentially in time, these self-interactions eventually become important. We make an initial study of these interactions and the relationship to “wavefront broadening” of the butterfly cone that marks the onset of scrambling. We comment on the relationship to quantum gravity effects in high-energy gravitational scattering. The talk is based on work in progress.

Bio: I am a graduate student at Stanford, advised by Douglas Stanford and Stephen Shenker. I study the dynamics of quantum systems. In recent years, my primary focus has been on the chaotic attributes of strongly-coupled systems and holography, such as scrambling and random matrix universality. Additionally, I worked on various non-equilibrium phenomena in open quantum systems in the past.
For full publications, see: https://scholar.google.com/citations?user=i4kyLbwAAAAJ&hl=en