Two Toy Spin Chain Models of Decoherence

• URL: http://arxiv.org/abs/2405.03795v1
• Date: Mon, 6 May 2024 19:01:26 GMT
• Title: Two Toy Spin Chain Models of Decoherence
• Authors: P. C. E. Stamp Zhen Zhu,
• Abstract summary: We solve for the decoherence dynamics of two models in which a simple qubit or Central Spin couples to a bath of spins. In model 1, the bath spins are Ising spins; in Model 2, they are coupled by transverse spin-spin interactions, and the chain supports spin waves.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We solve for the decoherence dynamics of two models in which a simple qubit or Central Spin couples to a bath of spins; the bath is made from a chain of spins. In model 1, the bath spins are Ising spins; in Model 2, they are coupled by transverse spin-spin interactions, and the chain supports spin waves. We look at (i) the case where the Hamiltonian is static, with a constant system/bath coupling, and (ii) where this coupling varies in time.

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