A Converse to Lieb–Robinson Bounds in One Dimension Using Index Theory

Abstract Unitary dynamics with a strict causal cone (or “light cone”) have been studied extensively, under the name of quantum cellular automata (QCAs). In particular, QCAs in one dimension have been completely classified by an index theory. Physical systems often exhibit only approxima...

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Bibliographic Details
Main Authors: Ranard, Daniel, Walter, Michael, Witteveen, Freek
Other Authors: Massachusetts Institute of Technology. Center for Theoretical Physics
Format: Article
Language:English
Published: Springer International Publishing 2022
Online Access:https://hdl.handle.net/1721.1/144160