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Paper 1

Hayden-Preskill decoding from noisy Hawking radiation

Ning Bao, Yuta Kikuchi

Year

2020

Journal

arXiv preprint

DOI

arXiv:2009.13493

arXiv

2009.13493

In the Hayden-Preskill thought experiment, the Hawking radiation emitted before a quantum state is thrown into the black hole is used along with the radiation collected later for the purpose of decoding the quantum state. A natural question is how the recoverability is affected if the stored early radiation is damaged or subject to decoherence, and/or the decoding protocol is imperfectly performed. We study the recoverability in the thought experiment in the presence of decoherence or noise in the storage of early radiation.

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Paper 2

Gravity from Transactions: Fulfilling the Entropic Gravity Program

A. Schlatter, R. E. Kastner

Year

2022

Journal

arXiv preprint

DOI

arXiv:2209.04025

arXiv

2209.04025

This is a review of new developments in entropic gravity in light of the Relativistic Transactional Interpretation (RTI). A transactional approach to spacetime events can give rise in a natural way to entropic gravity (in the way originally proposed by Erik Verlinde) while also overcoming extant objections to that research program. The theory also naturally gives rise to a Cosmological Constant and to Modified Newtonian Dynamics (MOND) and thus provides a physical explanation for the phenomena historically attributed to "dark energy" and "dark matter".

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