Using FRG with fixed volume, the work recovers constrained Ising fixed points and shows that renormalized Ising and spherical fixed points yield a negative anomalous dimension for strain, implying non-analytic corrections to Hooke's law while Ising criticality is preempted by bulk instability.
Those equations have to be solved simultaneously to obtain the fixed points r∗, g∗, h∗, u∗, v∗,andw ∗ of the RG flow within our trun- cation
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Functional renormalization group approach to phonon modified criticality: anomalous dimension of strain and non-analytic corrections to Hooke's law
Using FRG with fixed volume, the work recovers constrained Ising fixed points and shows that renormalized Ising and spherical fixed points yield a negative anomalous dimension for strain, implying non-analytic corrections to Hooke's law while Ising criticality is preempted by bulk instability.