Multi-field and Bohm's theory

In the recent literature, it has been shown that the wave function in the de Broglie-Bohm theory can be regarded as a new kind of field, i.e., a "multi-field", in three-dimensional space. In this paper, I argue that the natural framework for the multi-field is the original second-order Bohm's theory. In this context, it is possible: (i) to construe the multi-field as a real-valued scalar field; (ii) to explain the physical interaction between the multi-field and the Bohmian particles; and (iii) to clarify the status of the energy-momentum conservation and the dynamics of the theory.