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Schematic of the quantum renormalization group (QRG) procedure. The spin-1 chain is decomposed into a collection of spin blocks, and each spin block is represented by an effective spin (red dot) after the renormalization process.

Schematic of the quantum renormalization group (QRG) procedure. The spin-1 chain is decomposed into a collection of spin blocks, and each spin block is represented by an effective spin (red dot) after the renormalization process.

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FIG. 1. Schematic of the phase diagram for a spin-1 Heisenberg XXZ...
FIG. 2. Schematic of the quantum renormalization group (QRG) procedure....
FIG. 3. Schematic of the tripartite entanglement between the three spin...
FIG. 4. Schematic of the tripartite entanglement between the three spin...
FIG. 5. Schematic of the tripartite entanglement between the three spin...
Genuine tripartite entanglement as a probe of quantum phase transitions in a spin-1 Heisenberg chain with single-ion anisotropy
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  • Jun 2021
We study the quantum phase transitions of spin-1 Heisenberg chains with an easy-axis anisotropy $\Delta$ and a uniaxial single-ion anisotropy $D$ using a multipartite entanglement approach. The genuine tripartite entanglement between the spin blocks, measured by the tripartite qutrit hyperdeterminant, is calculated within the quantum renormalizatio...
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... Hamiltonian [44]. Finally, the renormalized Hamiltonian H has to be self-similar to the original Hamiltonian, so that one can determine the renormalization group flow of the coupling constants [28]. For our present case, we decompose the original Hamiltonian Eq. (1) into a collection of spin blocks, each of which contains three spins (see Fig. 2), ...
Context 2
... Hamiltonian [44]. Finally, the renormalized Hamiltonian H has to be self-similar to the original Hamiltonian, so that one can determine the renormalization group flow of the coupling constants [28]. For our present case, we decompose the original Hamiltonian Eq. (1) into a collection of spin blocks, each of which contains three spins (see Fig. 2), ...