| Autor: |
Proesmans, Karel, Vandebroek, Hans, Broeck, Christian Van den |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Lett. 119, 147803 (2017) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.119.147803 |
| Popis: |
Inspired by Kubo-Anderson Markov processes, we introduce a new class of transfer matrices whose largest eigenvalue is determined by a simple explicit algebraic equation. Applications include the free energy calculation for various equilibrium systems and a general criterion for perfect harmonicity, i.e., a free energy that is exactly quadratic in the external field. As an illustration, we construct a "perfect spring", namely a polymer with non-Gaussian, exponentially distributed sub-units which nevertheless remains harmonic until it is fully stretched. This surprising discovery is confirmed by Monte Carlo and Langevin simulations. |
| Databáze: |
arXiv |
| Externí odkaz: |
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