Effect of irrelevant boundary scaling operators

Article

关键词: FRIEDEL OSCILLATIONS;    LUTTINGER LIQUID;    TRANSMISSION;    POINT;   

DOI  :  10.1103/PhysRevB.60.R5113

来源: SCIE

【 摘 要 】

We investigate the 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 Castillejo-Dalitz-Dyson factors: the low-energy behavior is not changed, while Various high-energy behaviors are possible, including roaming'' renormalization group trajectories. In the nonintegrable case, a Monte Carlo study shows that the IR behavior is again generically unchanged, provided scaling variables are appropriately renormalized. [S0163-1829(99)51132-6].

【 授权许可】

Free