Constraints on Order and Disorder Parameters in Quantum Spin Chains
نویسندگان
چکیده
منابع مشابه
Entanglement spectrum, critical exponents, and order parameters in quantum spin chains.
We investigate the entanglement spectrum near criticality in finite quantum spin chains. Using finite size scaling we show that when approaching a quantum phase transition, the Schmidt gap, i.e., the difference between the two largest eigenvalues of the reduced density matrix λ(1), λ(2), signals the critical point and scales with universal critical exponents related to the relevant operators of...
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ژورنال
عنوان ژورنال: Communications in Mathematical Physics
سال: 2020
ISSN: 0010-3616,1432-0916
DOI: 10.1007/s00220-020-03802-4