WIAS Preprint No. 891, (2003)
A condition for weak disorder for directed polymers in random environment
- Birkner, Matthias
2010 Mathematics Subject Classification
- 60K37 82B44
- Directed polymer in random environment, weak disorder, size-biasing
We give a sufficient criterion for the weak disorder regime of directed polymers in random environment, which extends a well-known second moment criterion. We use a stochastic representation of the size-biased law of the partition function.
- Electron. Comm. Probab., 9 (2004) pp. 22-25