@article{202104.0254,
	doi = {10.20944/preprints202104.0254.v1},
	url = {https://doi.org/10.20944/preprints202104.0254.v1},
	year = 2021,
	month = {April},
	publisher = {Preprints},
	author = {Yichen Huang},
	title = {Extensive Entropy from Unitary Evolution},
	journal = {Preprints}
}