Matches in SemOpenAlex for { <https://semopenalex.org/work/W3216958049> ?p ?o ?g. }
- W3216958049 abstract "What entanglement is present in naturally occurring physical systems at thermal equilibrium? Most such systems are intractable and it is desirable to study simple but realistic systems that can be solved. An example of such a system is the one-dimensional infinite-lattice anisotropic $mathrm{XY}$ model. This model is exactly solvable using the Jordan-Wigner transform, and it is possible to calculate the two-site reduced density matrix for all pairs of sites. Using the two-site density matrix, the entanglement of formation between any two sites is calculated for all parameter values and temperatures. We also study the entanglement in the transverse Ising model, a special case of the $mathrm{XY}$ model, which exhibits a quantum phase transition. It is found that the next-nearest-neighbor entanglement (though not the nearest-neighbor entanglement) is a maximum at the critical point. Furthermore, we show that the critical point in the transverse Ising model corresponds to a transition in the behavior of the entanglement between a single site and the remainder of the lattice." @default.
- W3216958049 created "2021-12-06" @default.
- W3216958049 creator A5068097121 @default.
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- W3216958049 date "2002-09-23" @default.
- W3216958049 modified "2023-10-16" @default.
- W3216958049 title "Entanglement in a simple quantum phase transition" @default.
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- W3216958049 doi "https://doi.org/10.1103/physreva.66.032110" @default.
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