Ambiguity, Invisibility, and Negativity

Kavli Affiliate: Frank Wilczek

| First 5 Authors: Frank Wilczek, , , ,

| Summary:

Many widely different problems have a common mathematical structure wherein
limited knowledge lead to ambiguity that can be captured conveniently using a
concept of invisibility that requires the introduction of negative values for
quantities that are inherently positive. Here I analyze three examples taken
from perception theory, rigid body mechanics, and quantum measurement.

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