How would time flow for each parallel universe?

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Discussion Overview

The discussion centers around the nature of time flow in parallel universes, particularly whether these timelines must run concurrently with our own. Participants explore the implications of parallel universe theory on the concept of time, considering both theoretical and speculative aspects.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants question whether parallel timelines must run concurrently with our own, suggesting that if parallel universes exist, they may operate independently of our time.
  • One participant proposes that if fundamental physical constants are the same across universes, time could be measured concurrently using identical clocks, but if these constants differ, time flow could vary dramatically between universes.
  • Another participant introduces the idea that even within our own universe, time can flow differently depending on the relative motion of observers, referencing Lorentz frames and the effects of near-light-speed travel.
  • There is a suggestion that the perception of time may vary based on the cognitive abilities of different life forms, highlighting the subjective nature of time experience.
  • A participant requests clarification on which specific "parallel universe theory" is being referenced, indicating a need for more context in the discussion.

Areas of Agreement / Disagreement

Participants express differing views on the nature of time in parallel universes, with no consensus reached on whether timelines must run concurrently or how they might be defined.

Contextual Notes

The discussion involves assumptions about the existence of parallel universes and the nature of physical constants, which remain unresolved. The definitions of time and its measurement across different universes are also not clearly established.

Brennick908
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TL;DR
question using the parralel universe thoery if true, how would time work in other universes.
do parralel timelines have to run concurrently to our time? what I mean by this is basically if there is a version of me or you out there in a parralel universe right now in 1963 for example just living like normal or do all parralel timelines have to be in the same timeframe as us?
 
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Brennick908 said:
Summary: question using the parralel universe theory if true, how would time work in other universes.

do parralel timelines have to run concurrently to our time? what I mean by this is basically if there is a version of me or you out there in a parralel universe right now in 1963 for example just living like normal or do all parralel timelines have to be in the same timeframe as us?
I see no reason why it should but in any case it's irrelevant because since they (assuming they exist, which I don't) are not in causal contact with us we could never tell anyway.
 
I think the question is not clearly formulated, since it is not clear how one could define, even in principle, 'timelines that run concurrently between different parallel universes' (provided they exists in the first place). However, intuitively I might understand what you mean and suggest the following reasoning. If all the fundamental physical constants, such as the speed of light, the Planck constant, the fine structure constant, etc., are the same in all universes, then one can imagine (I mean 'imagine' because we don't know how to measure that anyway) the time flow indicated by the same type of clocks (say Caesium atomic clocks) running 'concurrently'. If however the physical constants are different then they do not. One second in one universe might be a million years in another.
 
You can even have a situation where a second in one Lorentz frame is a million years in another inertial coordinate system, both of them in our universe. Just accelerate something to almost the speed of light.

From an intelligent observer's viewpoint, it also matters how their own cognition senses the flow of time. You could think of some strange alien lifeform that is almost immobile like a tree or a coral and is so slow that its subjective "day" is a week for us. Like an extreme version of our folivora mammals on Earth.
 
Brennick908 said:
Summary: question using the parralel universe theory if true, how would time work in other universes.

do parralel timelines have to run concurrently to our time?

What "parallel universe theory" are you talking about? Please give a reference.
 

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