# Newtonian gravity in loop quantum gravity

**Authors:** Lee Smolin  
**arXiv:** [1001.3668](https://arxiv.org/abs/1001.3668)  
**Date:** 2010-01-20  
**Summary page:** https://www.summarizepaper.com/en/paper/1001.3668v2/

## Key points

- Lee Smolin's paper "Newtonian Gravity in Loop Quantum Gravity" explores the application of Erik Verlinde's argument to loop quantum gravity.
- Specific limits and conditions within loop quantum gravity can lead to the emergence of Newton's law of gravity.
- Understanding the relationship between area and entropy in loop quantum gravity, especially with imposed boundaries on a quantum spacetime, is crucial for this emergence.
- Smolin's analysis sheds light on how classical gravitational phenomena can be derived from a quantum perspective.
- The study provides insights into the interplay between classical and quantum theories of gravity and highlights potential unifying principles across different branches of physics.

## Summary

In the paper "Newtonian Gravity in Loop Quantum Gravity" by Lee Smolin, the author explores the application of Erik Verlinde's recent argument to the framework of loop quantum gravity. This analysis reveals that under specific limits and conditions within this quantum gravitational theory, Newton's law of gravity can emerge. This is made possible by understanding the relationship between area and entropy within loop quantum gravity, particularly when boundaries are imposed on a quantum spacetime. By delving into these concepts, Smolin sheds light on how classical gravitational phenomena can be understood and derived from a fundamentally different quantum perspective. The study not only offers insights into the interplay between classical and quantum theories of gravity but also highlights the potential for unifying principles across different branches of physics.