Entanglement and confinement in coupled quantum systems

@article{Alet2020EntanglementAC,
  title={Entanglement and confinement in coupled quantum systems},
  author={Fabien Alet and Masanori Hanada and A. Jevicki and Cheng(彭程) Peng},
  journal={arXiv: High Energy Physics - Theory},
  year={2020}
}
We study some general properties of coupled quantum systems. We consider simple interactions between two copies of identical Hamiltonians such as the SYK model, Pauli spin chains with random magnetic field and harmonic oscillators. Such couplings make the ground states close to the thermofield double states of the uncoupled Hamiltonians. For the coupled SYK model, we push the numerical computation further towards the thermodynamic limit so that an extrapolation in the size of the system is… Expand
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