On the effects of irrelevant boundary scaling operators

Details On the effects of irrelevant boundary scaling operators On the effects of irrelevant boundary scaling operators

1999-04-22

arxiv.org/abs/cond-mat/9904314v1

Phys.Rev. B60 (1999) 5113

Physics

Condensed Matter

Strongly Correlated Electrons

4 Pages RevTeX, 3 figures (eps files)

Scientific paper

10.1103/PhysRevB.60.R5113

We investigate consequences of adding irrelevant (or less relevant) boundary operators to a (1+1)-dimensional field theory, using the Ising and the boundary sine-Gordon model as examples. In the integrable case, irrelevant perturbations are shown to multiply reflection matrices by CDD factors: the low-energy behavior is not changed, while various high-energy behaviors are possible, including ``roaming'' RG trajectories. In the non-integrable case, a Monte Carlo study shows that the IR behavior is again generically unchanged, provided scaling variables are appropriately renormalized.

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