The thermodynamic anomaly in the one-dimensional ferroelectric model with proton tunneling.

Summary form only given. A one-dimensional model od ferroelectric with proton tunneling on the hydrogen bonds is considered. The model equivalent to one of two interacting chains of Ising spins in the transverse field. The influence of proton tunneling on the thermodynamics of the model is considered at the conditions e 1 models of ferroelectrics. Accounting of g diminishes this temperature and at critical value of g(0) this temperature becomes equals to zero. In the vicinity of this critical value of g the entropy jump tends to zero as tin(I / t), where t is proportional to (d-d(0)).