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|Title:||Quantum criticality of ground and thermal states in XX model||Authors:||Son, W.
|Issue Date:||Sep-2009||Citation:||Son, W.,Vedral, V. (2009-09). Quantum criticality of ground and thermal states in XX model. Open Systems and Information Dynamics 16 (2-3) : 281-286. ScholarBank@NUS Repository.||Abstract:||Here, we compare the critical behaviour of the ground state and the thermal state of the XX model. We analyze full energy spectra and the exact form of eigenstates to reconstruct the ground state and the thermally excited state. With the solutions, we discuss the properties of quantum phase transition at zero temperature as well as the state in a thermal equilibrium. © 2009 World Scientific Publishing Company.||Source Title:||Open Systems and Information Dynamics||URI:||http://scholarbank.nus.edu.sg/handle/10635/53313||ISSN:||12301612|
|Appears in Collections:||Staff Publications|
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