Journal
PHYSICAL REVIEW E
Volume 106, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.106.044120
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Funding
- National Research Development and Innovation Office (NKFIH) [SNN139581, K138606]
- Quantum Information National Laboratory
- Ministry of Innovation and Technology [ENKP-21-3-II]
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In this paper, we introduce an integrable spin ladder model and study its exact solution, correlation functions, and entanglement properties. The sublattice entanglement is also analyzed using numerical methods.
We introduce an integrable spin ladder model and study its exact solution, correlation functions, and entangle-ment properties. The model supports two particle types (corresponding to the even and odd sublattices), such that the scattering phases are constants: Particles of the same type scatter as free fermions, whereas the interparticle phase shift is a constant tuned by an interaction parameter. Therefore, the spin ladder bears similarities with anyonic models. We present exact results for the spectrum and correlation functions, and we study the sublattice entanglement by numerical means.
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