Reduced Persistence Length and Fluctuation-Induced Interactions of Directed Semiflexible Polymers on Fluctuating surfaces
ArXiv cond-mat/9603069 (1996)
Abstract:
We consider directed semiflexible polymers embedded in a fluctuating surface which is governed by either surface tension or bending rigidity. The attractive interactions induced by the fluctuations of the surface reduce the rigidity of the polymers. In particular, it is shown that for arbitrarily stiff parallel polymers, there is a characteristic separation below which they prefer to bend rather than stay linear. The out-of plane fluctuations of the polymer, screen out the long-range fluctuation-induced forces, resulting in only a short-ranged effective attraction.Complete wetting in the three-dimensional transverse Ising model
(1996)
Splitting the multiphase point
Phase Transitions 57:1-3 SEC . B (1996) 49-58
Abstract:
Models with competing interactions, for example the ANNNI model, can have special points at which the ground state is infinitely degenerate, so-called multiphase points. Small perturbations can lift this degeneracy and give rise to infinite sequences of long-period phases. This paper compares the effect of three possible perturbations, quantum fluctuations, thermal fluctuations and the softening of the spins from their quantised positions.Exactly solvable field theory of tunneling between edge states in the fractional quantum Hall effect
Nuclear and Particle Physics Proceedings Elsevier 45:1 (1996) 29-37