The concept of the "quantum zone" is not a well-defined term in physics. However, I can provide some information that might help clarify the relationship between quantum mechanics and gravity, as well as the boundaries between quantum and macroscopic realms.
Quantum mechanics is a fundamental theory that describes the behavior of matter and energy at the smallest scales, such as atoms, subatomic particles, and their interactions. It provides a probabilistic description of phenomena, where particles can exist in superpositions of states and exhibit wave-like behavior.
On the other hand, gravity is described by the theory of general relativity, which explains the force of gravity as the curvature of spacetime caused by mass and energy. General relativity is a classical theory that does not incorporate quantum principles.
Currently, physicists are actively seeking a theory that unifies quantum mechanics and general relativity, known as quantum gravity. However, a complete and consistent theory of quantum gravity is still an area of ongoing research and remains elusive.
Regarding the boundaries between the quantum and macroscopic realms, the distinction is often related to the concept of decoherence. Decoherence refers to the loss of quantum coherence or the suppression of quantum interference between different states of a system due to its interaction with the environment. As systems become larger and more complex, interactions with the environment lead to rapid decoherence, resulting in classical-like behavior.
In practice, macroscopic objects, such as everyday objects or even celestial bodies, are typically described using classical physics because the quantum effects become negligible and can be effectively ignored. The precise boundary between the quantum and macroscopic realms is not precisely defined and can depend on various factors, including the specific system under consideration and the level of precision required for a particular analysis.
To summarize, while gravity is not directly related to the boundaries between the quantum and macroscopic realms, the relationship between quantum mechanics and gravity is still an active area of research. The precise boundaries between these realms are not well-defined and can depend on the context and the phenomena being studied.