The number of degrees of freedom of the cat is enormous. Is it possible that the cat is to be described by a wave function, which is a superposition of a live and a dead cat?
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Austrian physicist who shared the 1933 Nobel for the wave equation that bears his name and the famous cat thought-experiment. Closely associated with Werner Heisenberg (matrix-mechanics rival who reached the same physics by different math) and Albert Einstein (his pen-pal on quantum interpretation). For an intellectual contrast, see Niels Bohr, Danish physicist and architect of the Copenhagen interpretation — Schrödinger's cat thought-experiment was specifically designed to ridicule Bohr's 'observer-dependent reality' reading of quantum mechanics — Schrödinger thought the Copenhagen interpretation was absurd; the cat was meant as reductio ad absurdum.
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A single quantum system can exist in multiple states simultaneously until observed. Schrodinger challenges whether this quantum superposition—which works at atomic scales—could absurdly apply to a macroscopic creature like a cat, leaving it neither alive nor dead until someone looks. He uses the cat as a reductio ad absurdum to expose the measurement problem at the heart of quantum mechanics.
Schrodinger invented wave mechanics and the equation governing quantum wavefunctions, earning the 1933 Nobel Prize. He devised this thought experiment in 1935 specifically to critique the Copenhagen interpretation championed by Bohr and Heisenberg, arguing that applying quantum superposition to everyday objects produces nonsensical results. His discomfort with probability-as-reality drove him toward deterministic alternatives his entire career.
In 1935, quantum mechanics was barely a decade old and its founders were locked in fierce debate over interpretation. Einstein, Podolsky, and Rosen had just published their EPR paradox paper that same year challenging quantum completeness. Physics was fracturing between Copenhagen probabilism and Einstein's insistence on hidden variables, making Schrodinger's cat a timely weapon in that foundational war over the nature of physical reality.
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