Quantum entanglement

Entanglement entropy provides a quantum information perspective to understand the long-distance properties of correlated many-body state and can be used to classify strongly correlated phases of matter in and out of equilibrium.

We study the entanglement scaling of 2+1 dimensional critical systems. Our main results include:

  • The of entanglement entropy of various 2+1 dimensional critical system defined on spatial torus.
  • The of quantum Lifshitz model.
  • The for critical system. This method is further used to detect .
  • We explore the of one classical of one dimensional critical wave function which is the ground state of quantum spin chain model with .
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