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wdlang
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in the literature, people are talking about 'quantum systems without a classical limit'
could anyone give me an example?
could anyone give me an example?
Quantum systems without a classical limit refer to physical systems that cannot be adequately described by classical mechanics. These systems exhibit quantum behavior, which is characterized by properties such as superposition and entanglement.
Examples of quantum systems without a classical limit include subatomic particles, photons, and atoms. These systems cannot be described by classical mechanics and require quantum theory to accurately model their behavior.
Studying quantum systems without a classical limit is important for gaining a deeper understanding of the fundamental nature of the universe and for developing new technologies such as quantum computing and quantum cryptography.
While quantum systems without a classical limit are typically observed at the microscopic level, there is ongoing research and debate about whether these quantum effects can also manifest in larger, macroscopic objects. This is known as the question of quantum coherence in macroscopic systems.
Currently, there is no single theory or model that can fully describe all quantum systems without a classical limit. However, there are various approaches such as quantum field theory and quantum information theory that provide valuable insights and predictions about these systems.