egenskapsfysikalism

Egenskapsfysikalism is a philosophical theory in the realm of quantum mechanics, primarily developed by Karl Popper, an Austrian-British philosopher. The theory posits that the properties or characteristics of a physical system or particle exist and are distinct before being measured or observed. This contrasts with the Copenhagen interpretation of quantum mechanics, which suggests that the properties of a system only take on definite values upon measurement.

According to egenskapsfysikalism, the aspects of a physical system existing independently of observation are usually referred to as 'observables' or 'properties'. These properties, which can encompass quantities like position, momentum, and energy, are posited to be inherent and well-defined within the system before measurement. By extension, the values of observables do not exist as distinct and separate from the properties themselves; rather, they are part of a comprehensive description of a system's characteristics.

Critics of the Copenhagen interpretation often find Popper's theory appealing due to its positivist and objective outlook on physical reality. Egenskapsfysikalism and similar theories provide an alternative view that seeks to maintain a distinct separation between the measuring apparatus and the measurand. Effective in keeping the realist worldview of physical quantities unscathed, it stays faithful to pre-quantum concepts while somehow seeking to localise Arthur Compton's and Bohr's uncertainties.

This theory fundamentally relies on the assumption that physical systems always maintain certain properties regardless of measurement. By means of logical reasoning and synthetic mechanics, Popper assumes the aspectuality of systems S, their connected corporate status.