Sigo leyendo la autobiografía científica de Heisenberg. Luego de presentar el trabajo contemporáneo de Schrödinger, sigue la crítica:
Unfortunately, however, the physical interpretation of the mathematical scheme presented us with grave problems. Schrodinger believed that, by associating particles with material waves, he had found a way of clearing the obstacles that had so long blocked the path of quantum theory. According to him, these material waves were fully comparable to such processes in space and time as electromagnetic or sound waves. Such obscure ideas as quantum jumps would completely disappear. I had no faith in a theory that ran completely counter to our Copenhagen conception and was disturbed to see that so many physicists greeted precisely this part of Schrodinger's doctrine with a sense of liberation. The many talks I had had with Niels Bohr, Wolfgang Pauli and many others over the years had convinced me that it was impossible to build up a descriptive time-space model of interatomic processes-the discontinuous element Einstein had mentioned to me in Berlin as a characteristic feature of atomic phenomena saw to that. Admittedly, this was no more than a negative feature, and we were still a long way from a complete physical interpretation of quantum mechanics, yet we were certain that we must get away from the idea of objective processes in time and space.
Esa es la postura dura de Heisenberg. No estoy de acuerdo con "we must get away from the idea of objective processes in time and space". No es la única posible interpretación de la teoría, y las hay más simples. Digo, no me convence lo de abandonar lo objetivo. Heisenberg ahí cruza una línea que no veo que tenga derecho a cruzar así: la de negar la objetividad de los procesos reales.
Now Schrodinger's interpretation-and this was its great novelty -simply denied the existence of these discontinuities. Thus when an atom passes from one stationary state to the next, it was no longer said to change its energy suddenly and to radiate the difference in the form of an Einsteinian light quanta. Radiation was the result of quite a different process, namely, of the simultaneous excitation of two stationary material vibrations whose interference gives rise to the emission of electromagnetic waves, e.g., light. This hypothesis seemed to me too good to be true, and I mustered what arguments I could to show that discontinuities were a fact of life, however inconvenient. The simplest argument was, of course, Planck's radiation formula, whose empirical correctness no one could doubt and which, after all, had led Planck to his discrete energy quanta.
Es curioso que esa explicación (la emisión de luz como INTERFERENCIA de dos vibraciones), ya no se mencione en las interpretaciones de la teoría de Schrödinger. Heisenberg señala bien que no era tan simple dejar de lado las discontinuidades. El propio Schrödinger lamentaría más tarde tener algo que ver con "esos saltos cuánticos".
En el próximo post, veremos el encuentro de Heisenberg con Schrödinger, cuando éste presenta su teoría en un seminario en Múnich.
Angel "Java" Lopez