High temperature periodic BEC in deuterated metals

TL;DR

This paper applies a Frohlich model to deuterons in metals, predicting a coherent deuteron-phonon state that could exist at room temperature, indicating potential for high-temperature Bose-Einstein condensation.

Contribution

It introduces a variational approach to predict a high-temperature BEC phase in deuterated metals, extending understanding of quantum states in such materials.

Findings

Prediction of a coherent deuteron-phonon state at room temperature

Lower total energy compared to uncorrelated states

Potential experimental realization at high deuteration levels

Abstract

The standard Frohlich model of the interaction of band states with phonons is applied to the case of deuterons solved in metals. A simple variational solution of this model predicts at least one highly coherent state of the deuteron-phonon system having a total energy significantly lower than that of uncorrelated interstitial deuterons and only thermal phonons, and that this phase may actually be exhibited at room temperature and high levels of deuteration.