



@article {2945,
	title = {Chiral central charge from a single bulk wave function},
	journal = {Phys. Rev. Lett. },
	volume = {128},
	year = {2022},
	month = {4/28/2022},
	pages = {176402},
	abstract = {<p>A (2+1)-dimensional gapped quantum many-body system can have a topologically protected energy current at its edge. The magnitude of this current is determined entirely by the temperature and the chiral central charge, a quantity associated with the effective field theory of the edge. We derive a formula for the chiral central charge that, akin to the topological entanglement entropy, is completely determined by the many-body ground state wave function in the bulk. According to our formula, nonzero chiral central charge gives rise to a topological obstruction that prevents the ground state wave function from being real-valued in any local product basis.</p>},
	doi = {10.1103/PhysRevLett.128.176402},
	url = {https://arxiv.org/abs/2110.06932},
	author = {Isaac H. Kim and Bowen Shi and Kohtaro Kato and Victor V. Albert}
}
