Statistical mechanics of double-stranded semi-flexible polymers
ArXiv cond-mat/9705090 (1997)
Abstract:
We study the statistical mechanics of double-stranded semi-flexible polymers using both analytical techniques and simulation. We find a transition at some finite temperature, from a type of short range order to a fundamentally different sort of short range order. In the high temperature regime, the 2-point correlation functions of the object are identical to worm-like chains, while in the low temperature regime they are different due to a twist structure. In the low temperature phase, the polymers develop a kink-rod structure which could clarify some recent puzzling experiments on actin.Deletions of 20p12 in Alagille syndrome: Frequency and molecular characterization
American Journal of Medical Genetics Wiley 70:1 (1997) 80-86
Diffusion in a Random Velocity Field: Spectral Properties of a Non-Hermitian Fokker-Planck Operator
ArXiv cond-mat/9704198 (1997)
Abstract:
We study spectral properties of the Fokker-Planck operator that describes particles diffusing in a quenched random velocity field. This random operator is non-Hermitian and has eigenvalues occupying a finite area in the complex plane. We calculate the eigenvalue density and averaged one-particle Green's function, for weak disorder and dimension d>2. We relate our results to the time-evolution of particle density, and compare them with numerical simulations.X-ray edge singularity in integrable lattice models of correlated electrons
(1997)
Scaling of the Quasiparticle Spectrum for d-wave Superconductors
Physical Review Letters American Physical Society (APS) 78:8 (1997) 1548-1551