Universal Order Parameters and Quantum Phase Transitions: A Finite-Size Approach
We propose a method to construct universal order parameters for quantum phase transitions in many-body lattice systems. The method exploits the H-orthogonality of a few near-degenerate lowest states of the Hamiltonian describing a given finite-size system, which makes it possible to perform finite-s...
| Main Authors: | , , |
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| Format: | Online |
| Language: | English |
| Published: |
Nature Publishing Group
2015
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4286789/ |