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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
ISSN: 12301612
Appears in Collections:Staff Publications

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