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From frustration-free parent Hamiltonians to off-diagonal long-range order: Moore-Read and related states in second quantization

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arxiv 2305.09286 v3 pith:M57T5VGK submitted 2023-05-16 cond-mat.str-el quant-ph

From frustration-free parent Hamiltonians to off-diagonal long-range order: Moore-Read and related states in second quantization

classification cond-mat.str-el quant-ph
keywords statesmoore-readordersecond-quantizedexistencefrustration-freehamiltonianslong-range
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We construct a recursive second-quantized formula for Moore-Read Pfaffian states. We demonstrate the utility of such second-quantized presentations by directly proving the existence of frustration-free parent Hamiltonians, without appealing to polynomial clustering properties. Furthermore, we show how this formalism is connected to the existence of a non-local order parameter for Moore-Read states and give a proof that the latter exhibit off-diagonal long-range order (ODLRO) in these quantities. We also develop a similar second-quantized presentation for the fermionic antiand PH-Pfaffian states, as well as f- and higher wave paired composite fermion states, and discuss ODLRO in most cases.

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