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I usually don't use the phrase "quantum fluctuations", but it's regularly used in the literature. So one has to know what's usually meant by the authors using it.
I Is the Vacuum Truly Empty or Just an Illusion?
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The discussion centers on the nature of the vacuum in quantum mechanics, questioning whether it is truly empty or just an illusion. Participants argue that while vacuum fluctuations exist, they do not imply the vacuum contains real particles or fields; rather, the vacuum state is defined as having no particles. The concept of Hawking radiation is also debated, with some viewing it as a mathematical construct rather than an observable phenomenon. The conversation emphasizes the distinction between theoretical models and physical reality, particularly in relation to measurements and the interpretation of quantum states. Ultimately, the vacuum is described as a unique state devoid of particles, despite the presence of fluctuations in observables.
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