# Magnetic Field Induced Quantum Phases in a Tensor Network Study of Kitaev Magnets

In a recent published article in Nature Communication, a team of researchers from University of Tokyo and University of Toronto led by Prof Yong Baek Kim reported the discovery of a novel quantum ground state in theoretical models designed for the so-called Kitaev magnets in external magnetic field.

Schematic figures of (a) the honeycomb tensor product states, where the colored bonds indicate the anisotropic spin interactions and the black solid lines denote the physical degrees of freedom, and (b) the optimization processes of the local tensor.

They used the tensor-network approach, a quantum-information inspired method, to demonstrate the existence of the nematic paramagnet. Such novel ground states break the lattice rotational symmetry spontaneously and may be relevant to a series of remarkable recent experiments done on this class of materials.

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