David Bohm and Bohmian Mechanics

Few physicists have been exiled by their own government, praised by Einstein, and quietly written out of the textbooks all within a single career, yet David Bohm managed all three. His name is attached to an interpretation of quantum mechanics that insists the world is deterministic, that particles have definite positions whether or not anyone is watching, and that the strangeness of the quantum realm comes not from irreducible chance but from a hidden layer of order we have not yet learned to read. That framework, known formally as the de Broglie-Bohm theory and informally as Bohmian mechanics or simply Bohmianism, has spent seventy years as the most respectable heresy in physics. It is mathematically rigorous, it reproduces every prediction of standard quantum theory, and it has been marginalised for reasons that have at least as much to do with history and personality as with science. As the broader field reconsiders the foundations of quantum theory, with pilot wave theory enjoying a genuine resurgence, Bohm’s deterministic vision deserves a closer and more sympathetic reading than it has often received. David Joseph Bohm was born in Wilkes-Barre, Pennsylvania, in 1917, and he came of age scientifically inside the American physics establishment…