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|Title:||A simple thermodynamical witness showing universality of macroscopic entanglement||Authors:||Vedral, V.||Issue Date:||Sep-2009||Citation:||Vedral, V. (2009-09). A simple thermodynamical witness showing universality of macroscopic entanglement. Open Systems and Information Dynamics 16 (2-3) : 287-291. ScholarBank@NUS Repository.||Abstract:||We show that if the ground state entanglement exceeds the total entropy of a given system, then this system is in an entangled state. This is a universal entanglement witness that applies to any physical system and yields a temperature below which we are certain to find some entanglement. Our witness is then applied to generic bosonic and fermionic many-body systems to derive the corresponding "critical" temperatures that have a very broad validity. © 2009 World Scientific Publishing Company.||Source Title:||Open Systems and Information Dynamics||URI:||http://scholarbank.nus.edu.sg/handle/10635/98631||ISSN:||12301612|
|Appears in Collections:||Staff Publications|
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