Towards a Theory of Quantum Gravity from Neural Networks

Neural network is a dynamical system described by two different types of degrees of freedom: fast-changing non-trainable variables (e.g., state of neurons) and slow-changing trainable variables (e.g., weights and biases). We show that the non-equilibrium dynamics of trainable variables can be descri...

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Main Author: Vitaly Vanchurin
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Entropy
Subjects:
Online Access:https://www.mdpi.com/1099-4300/24/1/7
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author Vitaly Vanchurin
author_facet Vitaly Vanchurin
author_sort Vitaly Vanchurin
collection DOAJ
description Neural network is a dynamical system described by two different types of degrees of freedom: fast-changing non-trainable variables (e.g., state of neurons) and slow-changing trainable variables (e.g., weights and biases). We show that the non-equilibrium dynamics of trainable variables can be described by the Madelung equations, if the number of neurons is fixed, and by the Schrodinger equation, if the learning system is capable of adjusting its own parameters such as the number of neurons, step size and mini-batch size. We argue that the Lorentz symmetries and curved space-time can emerge from the interplay between stochastic entropy production and entropy destruction due to learning. We show that the non-equilibrium dynamics of non-trainable variables can be described by the geodesic equation (in the emergent space-time) for localized states of neurons, and by the Einstein equations (with cosmological constant) for the entire network. We conclude that the quantum description of trainable variables and the gravitational description of non-trainable variables are dual in the sense that they provide alternative macroscopic descriptions of the same learning system, defined microscopically as a neural network.
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spelling doaj.art-ec07a43ccc5c4544bb01e6c1671523402023-11-23T13:40:21ZengMDPI AGEntropy1099-43002021-12-01241710.3390/e24010007Towards a Theory of Quantum Gravity from Neural NetworksVitaly Vanchurin0National Center for Biotechnology Information, NIH, Bethesda, MD 20894, USANeural network is a dynamical system described by two different types of degrees of freedom: fast-changing non-trainable variables (e.g., state of neurons) and slow-changing trainable variables (e.g., weights and biases). We show that the non-equilibrium dynamics of trainable variables can be described by the Madelung equations, if the number of neurons is fixed, and by the Schrodinger equation, if the learning system is capable of adjusting its own parameters such as the number of neurons, step size and mini-batch size. We argue that the Lorentz symmetries and curved space-time can emerge from the interplay between stochastic entropy production and entropy destruction due to learning. We show that the non-equilibrium dynamics of non-trainable variables can be described by the geodesic equation (in the emergent space-time) for localized states of neurons, and by the Einstein equations (with cosmological constant) for the entire network. We conclude that the quantum description of trainable variables and the gravitational description of non-trainable variables are dual in the sense that they provide alternative macroscopic descriptions of the same learning system, defined microscopically as a neural network.https://www.mdpi.com/1099-4300/24/1/7general relativityquantum mechanicsneural networksthermodynamics of learning
spellingShingle Vitaly Vanchurin
Towards a Theory of Quantum Gravity from Neural Networks
Entropy
general relativity
quantum mechanics
neural networks
thermodynamics of learning
title Towards a Theory of Quantum Gravity from Neural Networks
title_full Towards a Theory of Quantum Gravity from Neural Networks
title_fullStr Towards a Theory of Quantum Gravity from Neural Networks
title_full_unstemmed Towards a Theory of Quantum Gravity from Neural Networks
title_short Towards a Theory of Quantum Gravity from Neural Networks
title_sort towards a theory of quantum gravity from neural networks
topic general relativity
quantum mechanics
neural networks
thermodynamics of learning
url https://www.mdpi.com/1099-4300/24/1/7
work_keys_str_mv AT vitalyvanchurin towardsatheoryofquantumgravityfromneuralnetworks