Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.057205
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Funding
- National Science Foundation [DMR-0804914]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [804914] Funding Source: National Science Foundation
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We study the random XY spin chain in a transverse field by analyzing the susceptibility of the ground state fidelity, numerically evaluated through a standard mapping of the model onto quasifree fermions. It is found that the fidelity susceptibility and its scaling properties provide useful information about the phase diagram. In particular it is possible to determine the Ising critical line and the Griffiths phase regions, in agreement with previous analytical and numerical results.
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