# non-linear sigma model

> class of quantum field theory models

**Wikidata**: [Q924571](https://www.wikidata.org/wiki/Q924571)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Non-linear_sigma_model)  
**Source**: https://4ort.xyz/entity/non-linear-sigma-model


## References

1. Freebase Data Dumps. 2013