7 papers
Phase diagram of magnetic polymers
T. Garel, H. Orland, E. Orlandini
We consider polymers made of magnetic monomers (Ising or Heisenberg-like) in a good solvent. These polymers are modeled as self-avoiding walks on a cubic lattice, and the ferromagn…
Protein folding and heteropolymers
T. Garel, H. Orland, E. Pitard
We present a statistical mechanics approach to the protein folding problem. We first review some of the basic properties of proteins, and introduce some physical models to describe…
Directed polymers in a random medium: a variational approach
T. Garel, H. Orland
A disorder-dependent Gaussian variational approach is applied to the problem of a dimensional polymer chain in a random medium (or potential). Two classes of variational soluti…
Phase diagram of a semiflexible polymer chain in a solvent: application to protein folding
S. Doniach, T. Garel, H. Orland
We consider a lattice model of a semiflexible homopolymer chain in a bad solvent. Beside the temperature , this model is described by (i) a curvature energy , rep…
A variational study of the random-field XY model
T. Garel, G. Iori, H. Orland
A disorder-dependent Gaussian variational approach is applied to the -dimensional ferromagnetic XY model in a random field. The randomness yields a non extensive contribution to…
Random Hydrophilic-Hydrophobic Copolymers
T. Garel, L. Leibler, H. Orland
We study a single statistical amphiphilic copolymer chain AB in a selective solvent (e.g.water). Two situations are considered. In the annealed case, hydrophilic (A) and hydrophobi…