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- W2963454549 abstract "We study the decoherence of a spin-$1/2$ induced by an environment which is on the verge of a continuous phase transition. We consider spin environments described by the ferromagnetic and antiferromagnetic Heisenberg models on a square lattice. As is well known, these two-dimensional systems undergo a continuous phase transition at zero temperature, where the spins order spontaneously. For weak coupling of the central spin to these baths, we find that as one approaches the transition temperature, critical fluctuations make the central spin decohere faster. Furthermore, the decoherence is maximal at zero temperature as signaled by the divergence of the Markovian decoherence rate." @default.
- W2963454549 created "2019-07-30" @default.
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- W2963454549 date "2007-12-27" @default.
- W2963454549 modified "2023-09-26" @default.
- W2963454549 title "Enhanced Decoherence in the Vicinity of a Phase Transition" @default.
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- W2963454549 doi "https://doi.org/10.1103/physrevlett.99.267202" @default.
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