# Traversable wormholes in AdS and bounds on information transfer

## TL;DR

This paper investigates the capacity of traversable wormholes in AdS spacetime to transmit information, revealing limits based on black hole size, quantum fields, and semiclassical regimes, with implications for quantum teleportation.

## Contribution

It provides a detailed analysis of information transfer limits in traversable wormholes, connecting bulk computations with boundary quantum teleportation insights.

## Key findings

- Wormholes are open for a proper time shorter than the Planck time.
- Black holes with horizon radius larger than the AdS radius allow more information transfer.
- Increasing light fields enhances the amount of information transmitted.

## Abstract

We analyze the amount of information that can be sent through the traversable wormholes of Gao, Jafferis, and Wall. Although we find that the wormhole is open for a proper time shorter than the Planck time, the transmission of a signal through the wormhole can sometimes remain within the semiclassical regime. For black holes with horizons of order the AdS radius, information cannot be reliably sent through the wormhole. However, black holes with horizon radius much larger than the AdS radius do allow for the transmission of a number of quanta of order the horizon area in AdS units. More information can be sent through the wormhole by increasing the number of light fields contributing to the negative energy. Our bulk computations agree with a boundary analysis based on quantum teleportation.