Tensor Network and Black Hole

Understand

A tensor network formalism of thermofield dynamics is introduced.

• The formalism relates the original Hilbert space with its tilde space by a product of two copies of a tensor network.
• Then, their interface becomes an event horizon, and the logarithm of the tensor rank corresponds to the black hole entropy.
• Eventually, multiscale entanglement renormalization anzats (MERA) reproduces an AdS black hole at finite temperature.