Critical exponents and unusual properties of the broken phase in the 3d-RP2 antiferromagnetic model
We present the results of a Monte Carlo simulation of the antiferromagnetic RP^2 model in three dimensions. 
With finite-size scaling techniques we accurately measure the critical exponents and compare them with those of 
O(N) models. We are able to parameterize the corrections-to-scaling. The symmetry properties of the broken 
phase are also studied.
Nonuniversality in helical and canted-spin systems.
Vector-spin models with competing interactions have in general nontrivial ground states which completely break rotational invariance. We study the prototypical stacked triangular Heisenberg antiferromagnet by means of a O(3)×O(2)/O(2) nonlinear σ model in a 2+e expansion. We find a dynamically generated O(4) symmetry. We propose that such systems in three dimensions have a first-order transition or a second-order one with either N=4 or tricritical mean-field exponents. We argue that this view is supported by experimental and numerical data
Effect of temperature on the solvated electron in 1-propanol
Abstract The technique of pulse radiolysis has been used to study the effect of temperature on the solvated electron in 1-propanol. The spectrum of the solvated electron has been measured in the range 140–298 K. The wavelength at maximum absorption, λ max , decreases with decreasing temperature (corresponding to an increase in the energy, E max ) but the spectral width at half height, ΔE 1 2 , changes little with temperature. At temperatures above ≈180 K, the formation of the solvated electron is complete at the end of the pulse and its spectrum shows no change in shape with time. Below ≈170 K, the absorption spectrum is time-dependent in both liquid and glassy phases, the changes being attributed to the solvation process. The reaction(s) leading to solvated electron formation following the pulse show an activation energy of 22±2 kJ mol − and the solvated electron decays with an activation energy of 20±2 kJ mol −1 . The yield of solvated electrons decreases continuously with decreasing temperature in the range 298-77 K and, at all temperatures studied, is less than the total ionization yield measured by scavenging techniques.