Behaviour of One-Site Entanglement and Reduced Fidelity in an Anisotropic Spin-2 chain

• URL: http://arxiv.org/abs/2412.09891v1
• Date: Fri, 13 Dec 2024 06:09:16 GMT
• Title: Behaviour of One-Site Entanglement and Reduced Fidelity in an Anisotropic Spin-2 chain
• Authors: Victoria Sharmila Gomes, Amit Tribedi, Subhrajyoti Dey,
• Abstract summary: We have studied the variation of entanglement and fidelity measures in the MP ground states of a generic anisotropic spin 2 chain. These MP states represent the exact Ground State solutions of the system.
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• Abstract: Utilizing the matrix product formalism, we have studied the variation of entanglement and fidelity measures in the MP ground states of a generic anisotropic spin 2 chain with nearest neighbour interactions and shared symmetries. These MP states represent the exact Ground State solutions of the system and display distinctive characteristics determined by a maximum of three parameters exhibiting one antiferromagnetic Haldane phase (AFMH), together with a secondary weak antiferromagnetic (WAFM) and a weak ferromagnetic phase (WFM). Using Transfer Matrix Method (TM), we have obtained nontrivial features in the variation of Quantum Correlation measures and QIT Measures around the VBS point for an acritical choice of the parameters, and a Quantum Critical Point, for a critical choice of the parameters, of the AFMH spin liquid phase of the system.

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