This enables to use of mean-field env lambda obtained in the simple update method to calculate expectation values.
Because computational cost is drastically reduced (CTMRG is not required) we can increase the virtual bond dimension D.
Relative error from CTM calculation is < about 1% far from the critical point.
This enables to use of mean-field env lambda obtained in the simple update method to calculate expectation values. Because computational cost is drastically reduced (CTMRG is not required) we can increase the virtual bond dimension D. Relative error from CTM calculation is < about 1% far from the critical point.
To enable MF env calculation, set
Ref: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.195105