@article {CaltechAUTHORS_https://authors.library.caltech.edu/id/eprint/43591, title ="An area law and sub-exponential algorithm for 1D systems", author = "Arad, Itai and Kitaev, Alexei and Landau, Zeph and Vazirani, Umesh", month = "January", year = "2013", url = "https://resolver.caltech.edu/CaltechAUTHORS:20140130-142058060", } @article {CaltechAUTHORS_https://authors.library.caltech.edu/id/eprint/32421, title ="Solutions to generalized Yang-Baxter equations via ribbon fusion categories", author = "Kitaev, Alexei and Wang, Zhenghan", month = "April", year = "2012", url = "https://resolver.caltech.edu/CaltechAUTHORS:20120713-102318475", }