Pilot-wave approaches to quantum field theory

Understand

The purpose of this paper is to present an overview of recent work on pilot-wave approaches to quantum field theory.

• In such approaches, systems are not only described by their wave function, as in standard quantum theory, but also by some additional variables.
• In the non-relativistic pilot-wave theory of de Broglie and Bohm those variables are particle positions.
• In the context of quantum field theory, there are two natural choices, namely particle positions and fields.