Geometric Bound on Information Transfer Through Wormholes

This paper establishes a fundamental geometric constraint on the ability to transmit quantum information through traversable wormholes. It uses established physics principles like Raychaudhuri's equation and the null energy condition to derive an area theorem. This theorem, combined with the bit-thread picture, provides a rigorous upper bound on information transfer, offering insights into the limits of communication through these exotic spacetime structures. The use of a toy model (glued HaPPY codes) further aids in understanding the implications.