Abstract
In this note we investigate the role of Lloyd’s computational bound in holographic complexity. Our goal is to translate the assumptions behind Lloyd’s proof into the bulk language. In particular, we discuss the distinction between orthogonalizing and ‘simple’ gates and argue that these notions are useful for diagnosing holographic complexity. We show that large black holes constructed from series circuits necessarily employ simple gates, and thus do not satisfy Lloyd’s assumptions. We also estimate the degree of parallel processing required in this case for elementary gates to orthogonalize. Finally, we show that for small black holes at fixed chemical potential, the orthogonalization condition is satisfied near the phase transition, supporting a possible argument for the Weak Gravity Conjecture first advocated in [1].
| Original language | English |
|---|---|
| Article number | 39 |
| Journal | Journal of High Energy Physics |
| Volume | 2018 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 2018 |
Funding
We thank Shira Chapman, Ben Freivogel, Ro Johnson, Sagar Lokhande, Gary Shiu and Pablo Soler for valuable discussions and comments. MM is supported by a postdoctoral fellowship by ITF, Utrecht University.
Keywords
- AdS-CFT Correspondence
- Black Holes in String Theory