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echolocator
Is there a reason why a given universe should include only a single dimension attributed to time? Why not two? Or ten? Is there any particular law that prevents this?
Cheers
echolocator
Cheers
echolocator
Originally posted by echolocator
Is there a reason why a given universe should include only a single dimension attributed to time? Why not two? Or ten? Is there any particular law that prevents this?
Cheers
echolocator
Demystifier said:With number of times different from 1, the field equations of motion would not be hyperbolic. Then the corresponding dynamics would be typically unstable. A similar argument excludes tachyons.
yanniru said:I recall that the original 26-d closed string theory had two time dimensions as well as tachyons and was considered undesirable for both reasons. Does anyone have a similar recollection?
However, in reading Lisa Randall's book "Warped Passages", the claim is made that 26-d theory has but one time dimension. Is she correct and/or are both possibilities?
Demystifier said:With number of times different from 1, the field equations of motion would not be hyperbolic. Then the corresponding dynamics would be typically unstable. A similar argument excludes tachyons.
It seems that arivero is contradicting coalquay404 who in answer to my question said that 26-d string theory has only had one time dimension.arivero said:Clifford Algebras are classified by signature (number of spatial - number of temporal dimensions). It serves to string theoretists (and to Conway) to explain that 26 Minkowski is really a 24 dim thing.
yanniru said:It seems that arivero is contradicting coalquay404 who in answer to my question said that 26-d string theory has only had one time dimension.
rtharbaugh1 said:Consider acceleration. We use time square in the denominator. So it is quite evident that the idea of time having more than one dimension is not only acceptable, it is necessary to explain ordinary phenomena.
R
Our perception of time is based on the movement of objects and events in relation to one another. In order to measure the passage of time, we need to have a reference point and a way to track the changes in that reference point. This is typically done using the three dimensions of space (length, width, and height). The concept of time as a fourth dimension was introduced by Albert Einstein, but it is still considered to be a single dimension.
While it is possible that there are other dimensions of time that we are not aware of, there is currently no scientific evidence to support this idea. Our current understanding of time is based on the laws of physics and the theories of relativity, which do not account for multiple dimensions of time.
It is difficult to say how a second time dimension would affect our daily lives as it is purely hypothetical. However, it is likely that it would drastically change our understanding of time and how we measure and perceive it. It could also have implications for the way we experience events and the concept of cause and effect.
Our perception of time is limited by our biological and cognitive abilities. While it is possible for humans to understand and conceptualize the idea of multiple dimensions of time, it is unlikely that we would be able to perceive or experience them in the same way that we do with our current understanding of time.
Mathematics is a powerful tool for understanding and explaining complex concepts, but it is limited by our current understanding of the universe. While there are theories that suggest the existence of multiple dimensions of time, there is currently no mathematical framework that can fully explain or support this idea. Much more research and evidence is needed before we can use mathematics to explain the concept of multiple time dimensions.