Time emergence
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The concept of time emergence is often explored in the contexts of quantum mechanics, cosmology, and general physics. Here are a few insights from trusted experts in these fields:
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Spacetime Emergence: According to , spacetime does not emerge from a tangible entity but from the quantum wave function. This concept suggests that spacetime as we understand it is a higher-level description derived from the underlying quantum state. This is analogous to describing air in terms of fluid mechanics versus atomic positions and momenta. It's not about a temporal emergence but simultaneous higher-level representation 1.
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Quantum Time Emergence: There are speculative ideas such as the thermal time hypothesis proposed by , which explores how time might emerge from the thermal characteristics of quantum systems. This is one of many theoretical explorations in quantum gravity aiming to explain the fabric of time 2.
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Time and Reality: discusses the block universe view, or eternalism, where all moments in time are equally real, akin to points in space. This view suggests that time does not emerge in a conventional sense but all moments exist simultaneously from a certain perspective 3.
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Emergence in Quantum Mechanics: Emergence is a concept where complex systems and patterns arise out of a multiplicity of relatively simple interactions. In quantum mechanics, the macroscopic properties (like classical mechanics) emerge from the wave function of quantum states. This demonstrates how different theories can describe the same system at various scales 4.
These insights delve into complex and nuanced theories where time and spacetime can emerge from deeper quantum states or principles, challenging our traditional understanding of linear temporal progression.
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