Why quantum physicists are still arguing after 100 years

Sean M. Carroll

Bertrand Berche, Christophe Chatelain, Dufour +2 more

Many theoretical predictions derived from quantum mechanics have been confirmed experimentally for the last 80 years.However, interpretative aspects have long been subject to debate.Among them, the question of the existence of hidden variables is still open.We review these questions, paying special attention to historical aspects, and argue that one may definitively exclude local realism based on the present experimental outcomes.Nevertheless other interpretations of Quantum Mechanics are not excluded.

Bertrand Berche, Christophe Chatelain, C. Dufour +2 more

Many theoretical predictions derived from quantum mechanics have been confirmed experimentally during the last 80 years. However, interpretative aspects have long been subject to debate. Among them, the question of the existence of hidden variables is still open. We review these questions, paying special attention to historical aspects, and argue that one may definitively exclude local realism on the basis of present experimental outcomes. Other interpretations of Quantum Mechanics are nevertheless not excluded.

E. U. Condon

Sujeevan Sivasundaram, Kristian Hvidtfelt Nielsen

Even though quantum mechanics has existed for almost 100 years, questions concerning the foundation and interpretation of the theory still remain. These issues have gathered more attention in recent years, but does this mean that physicists are more aware of foundational issues concerning quantum mechanics? A survey was sent out to 1234 physicists affiliated to 8 different universities. 149 responded to the questions, which both concerned foundational issues related to quantum mechanics, specifically, as well as questions concerning interpretations of physical theories in general. The answers to the survey revealed that foundational concepts in quantum mechanics are still a topic that only a minority of physicists are familiar with, although a clear majority of physicists find that interpretations of physical theories are important. The various questions, as well as how the respondents answered, are presented. The survey intends to give an overview of what the opinion of the physics community, in general, is concerning issues related to quantum mechanics.