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Title: Quantum criticality of ground and thermal states in XX model
Authors: Son, W. 
Vedral, V. 
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
ISSN: 12301612
Appears in Collections:Staff Publications

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