Periodic minimizers in 1D local mean field theory

Details Periodic minimizers in 1D local mean field theory Periodic minimizers in 1D local mean field theory

2007-12-14

arxiv.org/abs/0712.2330v1

Comm. Math. Phys. 286, 163-177 (2009)

Physics

Mathematical Physics

20 pages, 2 figures

Scientific paper

10.1007/s00220-008-0589-z

Using reflection positivity techniques we prove the existence of minimizers for a class of mesoscopic free-energies representing 1D systems with competing interactions. All minimizers are either periodic, with zero average, or of constant sign. If the local term in the free energy satisfies a convexity condition, then all minimizers are either periodic or constant. Examples of both phenomena are given. This extends our previous work where such results were proved for the ground states of lattice systems with ferromagnetic nearest neighbor interactions and dipolar type antiferromagnetic long range interactions.

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