Interference in the Quantum Ising Model |
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| Authors: | XU You-Yang SU Duo-Wu |
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| Institution: | 1. Faculty of Science, Kunming University of Science and Technology, Kunming 650093, China;
2. National Institute of Metrology, Beijing 100013, China |
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| Abstract: | Using the measure of interference defined in this paper, we investigate the quantum phase transition of one-dimensional Ising chains. We find that thermal fluctuations affect the interference more strongly at the critical point. We also show that the derivative of the interference with respect to the coupling parameter, λ, can be depressed by the thermal fluctuation. Finally, we find that this suppression is due to multi-particle excitations. |
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| Keywords: | quantum interference quantum phase transition quantum Ising model |
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