Page 44 - COSMOS & H -Health - Science
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2 2 . 4 . B r a n e w o r l l d M u l l t i v e r s e
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2.4. Braneworld Multiverse
2.4. Braneworld Multiverse
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According to some variants of string theory, one could imagine our
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According to some variants of string theory, one could imagine our
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universe as a 3-dimensional "brane" floating in a higher-dimensional
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u u n i i v e r s e a s a 3 - - d i i m e n s i i o n a l l " b r a n e " f f l l o a t t i i n g i i n a h i i g h e r - - d i i m e n s i i o n a l l
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universe as a 3-dimensional "brane" floating in a higher-dimensional
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space. Further, there can be other branes in those extra dimensions,
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space. Further, there can be other branes in those extra dimensions,
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each carrying its own universe. Interaction between the branes can
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each carrying its own universe. Interaction between the branes can
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explain phenomena such as gravity being considerably weaker than
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the rest of the basic forces.
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t t h e r e s t t o f f t t h e b a s i i c f f o r c e s . .
the rest of the basic forces.
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3. The Evidence for and Against the
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3. The Evidence for and Against the
3. The Evidence for and Against the
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3.1. Supporting Evidence
3.1. Supporting Evidence
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Although at present there is no direct evidence for the multiverse, there
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Although at present there is no direct evidence for the multiverse, theree
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is indirect evidence along several lines that gives credence to thee
is indirect evidence along several lines that gives credence to the
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hypothesis: Cosmic Inflation: There is a plethora of evidence too
hypothesis: Cosmic Inflation: There is a plethora of evidence to
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substantiate the observation of the inflationary model of the universe.
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substantiate the observation of the inflationary model of the universe..
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For example, cosmic microwave background radiation-if it oncee
For example, cosmic microwave background radiation-if it once
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occurred-then it can occur more than once and create other universes.
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