# Goldstone boson

> massless boson that must be present in a quantum system with spontaneously broken symmetry

**Wikidata**: [Q1153441](https://www.wikidata.org/wiki/Q1153441)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Goldstone_boson)  
**Source**: https://4ort.xyz/entity/goldstone-boson


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)