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Title: Identifying quantum phase transitions via geometric measures of nonclassicality
Authors: Tan, Kok Chuan
Keywords: Science::Physics
Issue Date: 2020
Source: Tan, K. C. (2020). Identifying quantum phase transitions via geometric measures of nonclassicality. Physical Review A, 102(2), 022421-. doi:10.1103/PhysRevA.102.022421
Journal: Physical Review A 
Abstract: It is shown that divergences in the susceptibility of any geometric measure of nonclassicality are sufficient conditions to identify phase transitions at arbitrary temperature. This establishes that geometric measures of nonclassicality, in any quantum resource theory, are generic tools to investigate phase transitions in quantum systems. For the zero-temperature case, we show that geometric measures of quantum coherence are especially useful for identifying first-order quantum phase transitions and can be a particularly robust alternative to other approaches employing measures of quantum correlations.
ISSN: 2469-9926
DOI: 10.1103/PhysRevA.102.022421
Rights: © 2020 American Physical Society. All rights reserved. This paper was published in Physical Review A and is made available with permission of American Physical Society.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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