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dc.contributor.authorLi, Yan-Weien_US
dc.contributor.authorMishra, Chandan K.en_US
dc.contributor.authorSun, Zhao-Yanen_US
dc.contributor.authorZhao, Kunen_US
dc.contributor.authorMason, Thomas G.en_US
dc.contributor.authorGanapathy, Rajeshen_US
dc.contributor.authorPica Ciamarra, Massimoen_US
dc.identifier.citationLi, Y.-W., Mishra, C. K., Sun, Z.-Y., Zhao, K., Mason, T. G., Ganapathy, R., & Pica Ciamarra, M. (2019). Long-wavelength fluctuations and anomalous dynamics in 2-dimensional liquids. Proceedings of the National Academy of Sciences of the United States of America, 116(46), 22977-22982. doi:10.1073/pnas.1909319116en_US
dc.description.abstractIn 2-dimensional systems at finite temperature, long-wavelength Mermin-Wagner fluctuations prevent the existence of translational long-range order. Their dynamical signature, which is the divergence of the vibrational amplitude with the system size, also affects disordered solids, and it washes out the transient solid-like response generally exhibited by liquids cooled below their melting temperatures. Through a combined numerical and experimental investigation, here we show that long-wavelength fluctuations are also relevant at high temperature, where the liquid dynamics do not reveal a transient solid-like response. In this regime, these fluctuations induce an unusual but ubiquitous decoupling between long-time diffusion coefficient D and structural relaxation time τ, where [Formula: see text], with [Formula: see text] Long-wavelength fluctuations have a negligible influence on the relaxation dynamics only at extremely high temperatures in molecular liquids or at extremely low densities in colloidal systems.en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofProceedings of the National Academy of Sciences of the United States of Americaen_US
dc.rights© 2019 The Author(s) (Published by National Academy of Sciences). All rights reserved. This paper was published in Proceedings of the National Academy of Sciences of the United States of America and is made available with permission of The Author(s) (Published by National Academy of Sciences).en_US
dc.titleLong-wavelength fluctuations and anomalous dynamics in 2-dimensional liquidsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsLong-wavelength Fluctuationsen_US
dc.description.acknowledgementM.P.C. and Y.-W.L. acknowledge support from the Singapore Ministry of Education through the Academic Research Fund (Tier 2) MOE2017-T2-1-066 (S) and from the National Research Foundation Singapore and are grateful to the National Supercomputing Center of Singapore for providing computational resources. K.Z. acknowledges support from the National Natural Science Foundation of China (NSFC) (21573159 and 21621004). Z.-Y.S. acknowledges support from the NSFC (21833008 and 21790344). T.G.M. acknowledges financial support from University of California, Los Angeles.en_US
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