As explained in the context of this blogpost, Entanglement Renormalization adds to the three steps contained in a "conventional" infinitesimal RG transformation
- Sume or integrate over small scales (coarse graining)
- Compute the new effective quantitiy (action, Lagrangian, Hamiltonian, etc) that describes the system
the additional step of disentangling the small scale degrees of freedom before they get coarse grained.
The blogpost says that by making use of entanglement renormalization, one may for example reconstruct the small scale wave function from a very small amount of information at large scales.
But what difference does it make from a physics point of view when doing an RG flow analysis, if one uses the "conventional" or entanglement renormalization group?
For example does one meet different (kinds of) fixed points when going from small to large scales?
Or do the fixed points keep the same, but the RG trajectories (or mor generally the RG flow field) in coupling space surrounding them changes?
I always thought that the physics should in principle not depend on the exact renormalization method applied, but maybe it is different when considering entanglement renormalization?