TY - JOUR
T1 - Entanglement renormalization, scale invariance, and quantum criticality
AU - Pfeifer, Robert N C
AU - Evenbly, Glen
AU - Vidal, Guifré
PY - 2009/4/1
Y1 - 2009/4/1
N2 - The use of entanglement renormalization in the presence of scale invariance is investigated. We explain how to compute an accurate approximation of the critical ground state of a lattice model and how to evaluate local observables, correlators, and critical exponents. Our results unveil a precise connection between the multiscale entanglement renormalization ansatz and conformal field theory (CFT). Given a critical Hamiltonian on the lattice, this connection can be exploited to extract most of the conformal data of the CFT that describes the model in the continuum limit.
AB - The use of entanglement renormalization in the presence of scale invariance is investigated. We explain how to compute an accurate approximation of the critical ground state of a lattice model and how to evaluate local observables, correlators, and critical exponents. Our results unveil a precise connection between the multiscale entanglement renormalization ansatz and conformal field theory (CFT). Given a critical Hamiltonian on the lattice, this connection can be exploited to extract most of the conformal data of the CFT that describes the model in the continuum limit.
UR - http://www.scopus.com/inward/record.url?scp=64649089997&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.79.040301
DO - 10.1103/PhysRevA.79.040301
M3 - Article
AN - SCOPUS:64649089997
SN - 1050-2947
VL - 79
SP - 1
EP - 4
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 040301
ER -