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- W1973131882 abstract "We analyze the dynamical generation of entanglement in systems of two interacting spins initially prepared in a product of spin coherent states. For arbitrary time-independent Hamiltonians, we derive a semiclassical expression for the purity of the reduced density matrix as a function of time. The final formula, subsidiary to the linear entropy, shows that the short-time dynamics of entanglement depends exclusively on the stability of trajectories governed by the underlying classical Hamiltonian. In addition, this semiclassical measure is shown to reproduce the general properties of its quantum counterpart and give the expected result in the large spin limit. The accuracy of the semiclassical formula is further illustrated in a problem of phase exchange for two particles of spin $j$." @default.
- W1973131882 created "2016-06-24" @default.
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- W1973131882 date "2012-05-17" @default.
- W1973131882 modified "2023-10-18" @default.
- W1973131882 title "Entanglement dynamics via semiclassical propagators in systems of two spins" @default.
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- W1973131882 doi "https://doi.org/10.1103/physreva.85.052312" @default.
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