Phys. Rev. Lett. 130, 156701 (2023) - $ {\mathbb {Z}}_ {2}$ Spin ...
2023年4月11日 · Particularly, we find an even-odd effect that the Z 2 gauge charges are fermions in the half integer spin model, but are bosons in the integer spin model. We further prove that the fermionic Z 2 gauge charges are always deconfined; hence, the half integer spin Kitaev model would have nontrivial spin liquid ground states regardless of ...
In this work, we use Lanczos diagonalization and density matrix renormalization group methods to investigate numerically the S 1 Kitaev-Heisenberg model. The ground-state phase diagram and quantum phase transitions are investigated by employing lo-cal and nonlocal spin correlations.
Quantum antiferromagnetic Heisenberg half-odd integer spin model …
2015年12月21日 · Applying a symmetric bulk bipartition to one-dimensional Affleck-Kennedy-Lieb-Tasaki valence bond solid (VBS) states for the integer spin-S Haldane gapped phase, we can create an array of fractionalized spin-S/2 edge states with the super unit cell l in the reduced bulk system, and the topological properties encoded in the VBS wave functions can...
Haldane topological spin-1 chains in a planar metal-organic
2023年9月6日 · We have conducted key in-depth analysis of a 2D-MOF with decoupled spin-1 chains exhibiting Haldane physics, comparing remarkably well to a microscopic spin-1 chain model using unbiased QMC...
A set of exactly solvable Ising models with half-odd-integer spin
2009年3月30日 · We present a set of exactly solvable Ising models, with half-odd-integer spin-S on a square-type lattice including a quartic interaction term in the Hamiltonian. The particular properties of the mixed lattice, associated with mixed half-odd-integer spin- ( S , 1 / 2 ) and only nearest-neighbor interaction, allow us to map this system either ...
One spin at a time | Nature Physics
2022年10月24日 · The difference between integer and half-integer spin models changes the interference of quantum fluctuations in the two cases, leading to distinct properties that should be observable through...
Algebraic Spin Liquid in an Exactly Solvable Spin Model
2009年5月29日 · We have proposed an exactly solvable quantum spin-model on a square lattice. Its ground state is a quantum spin liquid with a half-integer spin per unit cell. The fermionic excitations, dubbed as “spinons”, are gapless with a linear dispersion, while the topological “vison” excitations are gapped.
Entropy, gap and a multi-parameter deformation of the Fredkin spin ...
2017年9月22日 · The Fredkin model utilizes half-integer spin chains, with next nearest neighbor interactions based on the so-called Fredkin gate [21, 22]. The deformed Fredkin model is presented in [ 23 ] and exhibits a similar quantum phase transition into …
Quantum critical region of a two-dimensional spin-half XXZ model …
2023年1月12日 · A two-dimensional spin-half XXZ model, which corresponds to a hard-core boson system when mapped, also has the quantum phase transition as we change the strength of anisotopic interaction. At zero temperature, the model exhibits a quantum phase transition between an antiferromagnet (AF) and an XY critical phase (XY) at the Heisenberg point ...
Abstract: We make use of O(2r+ 1) spinning particle models to construct lin-earized higher-spin curvatures in (A)dS spaces for elds of arbitrary half-integer spin propagating in a space of arbitrary (even) dimension: the eld potentials, whose cur-vatures are computed with the present models, are spinor-tensors of mixed symmetry
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