# mass gap

> energy difference between ground state and lightest excited state(s)

**Wikidata**: [Q5357201](https://www.wikidata.org/wiki/Q5357201)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Mass_gap)  
**Source**: https://4ort.xyz/entity/mass-gap


## References

1. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)