STATIC CHAOS AND SCALING BEHAVIOR IN THE SPIN-GLASS PHASE | |
Article | |
关键词: FINITE-SIZE CORRECTIONS; ORDER PARAMETER; FIELD-THEORY; MODEL; EQUILIBRIUM; DYNAMICS; FLUCTUATIONS; BREAKING; | |
DOI : 10.1103/PhysRevB.50.6844 | |
来源: SCIE |
【 摘 要 】
We discuss the problem of static chaos in spin glasses. In the case of magnetic-field perturbation, we propose a scaling theory for the spin-glass phase. Using the mean-field approach we argue that some pure states are suppressed by the magnetic field and their free-energy cost is determined by the finite-temperature fixed-point exponents. In this framework, numerical results suggest that mean-field chaos exponents are probably exact in finite dimensions. If we use the droplet approach, numerical results suggest that the zero-temperature fixed-point exponent theta is very close to (d - 3)/2. In both approaches d = 3 is the lower critical dimension in agreement with recent numerical simulations.
【 授权许可】
Free