PIRSA:22010074

Video URL

https://pirsa.org/22010074

Complexity of the python’s lunch and quantum gravity in the lab

Gharibyan, H. (2022). Complexity of the python’s lunch and quantum gravity in the lab. Perimeter Institute for Theoretical Physics. https://pirsa.org/22010074

Gharibyan, Hrant. Complexity of the python’s lunch and quantum gravity in the lab. Perimeter Institute for Theoretical Physics, Jan. 26, 2022, https://pirsa.org/22010074 

          @misc{ scivideos_PIRSA:22010074,
            doi = {10.48660/22010074},
            url = {https://pirsa.org/22010074},
            author = {Gharibyan, Hrant},
            keywords = {Quantum Information},
            language = {en},
            title = {Complexity of the python{\textquoteright}s lunch and quantum gravity in the lab},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2022},
            month = {jan},
            note = {PIRSA:22010074 see, \url{https://scivideos.org/pirsa/22010074}}
          }

Hrant Gharibyan Stanford University

Talk numberPIRSA:22010074
DOI10.48660/22010074
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

This talk consists of two parts. At first, I will focus on geometric obstructions to decoding Hawking radiation (python’s lunch). Harlow and Hayden argued that distilling information out of Hawking radiation is computationally hard despite the fact that the quantum state of the black hole and its radiation is relatively un-complex. I will trace this computational difficulty to a geometric obstruction in the Einstein-Rosen bridge connecting the black hole and its radiation. Inspired by tensor network models, I will present a conjecture that relates the computational hardness of distilling information to geometric features of the wormhole.

Then, with the long-term goal of studying quantum gravity in the lab, I will discuss a proposal for a holographic teleportation protocol that can be readily executed in table-top experiments. This protocol exhibits similar behavior to that seen in recent traversable wormhole constructions. I will introduce the concept of "teleportation by size" to capture how the physics of operator-size growth naturally leads to information transmission. The transmission of a signal through a semi-classical holographic wormhole corresponds to a rather special property of the operator-size distribution we call "size winding". 

Zoom Link: https://pitp.zoom.us/j/93957279481?pwd=eGVTU1MwOGNWNkMyYlRiWGo0QnFldz09