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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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