Can Multiple Universes Coexist and Interfere with Each Other?

In summary, this theory suggests that any time something in a universe changes, it splits (or maybe not, doesn't really matter for this). If some random event occurs (truly random, like a double slit experiment) multiple universes are formed, 1 for each outcome. The more alike two universes are the closer they are and the closer they are the more they interfere with each other. So for example if you have an electron in an atom in a superposition between two states. Since there hasnt been any decoherence, the universes are exactly alike except for this electron's energy state. The second you make a measurement, the two universes are suddenly no longer differing in just the energy state of the electron, but in the measurement
  • #1
michael879
698
7
I just had this thought about multiple universes. Basically any time something in a universe changes, it splits (or maybe not, doesn't really matter for this). If some random event occurs (truly random, like a double slit experiment) multiple universes are formed, 1 for each outcome. The more alike two universes are the closer they are and the closer they are the more they interfere with each other. So for example if you have an electron in an atom in a superposition between two states. Since there hasnt been any decoherence, the universes are exactly alike except for this electron's energy state. The second you make a measurement, the two universes are suddenly no longer differing in just the energy state of the electron, but in the measurement also and they become farther apart.

This is one of the current theories right? here's my thought:
there should still be small amounts of interference between the universes. Has anyone tried a double slit experiment with decoherence and tried to pick up interference patterns? wouldn't that prove or disprove this theory? if you make the "measurement" small enough maybe?

maybe the double slit is a bad example. If you make a quantum computer using non-reversible gates there is heat emitted from the gates causing decoherence of the qubits. The universes would still be almost identical in that case...
 
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  • #2
michael879 said:
This is one of the current theories right? here's my thought:
there should still be small amounts of interference between the universes. Has anyone tried a double slit experiment with decoherence and tried to pick up interference patterns? wouldn't that prove or disprove this theory? if you make the "measurement" small enough maybe?

What you suggest is paradoxical, because decoherence is the process of losing quantum interference. So you can't have decoherence with interference... :wink:
 
  • #3
kvantti said:
What you suggest is paradoxical, because decoherence is the process of losing quantum interference. So you can't have decoherence with interference... :wink:

that is the practical case- but we should be rigorous here- technically you should not say that there is no interference between decohered systems- rather that at this time it is too expensive to detect the interference between decohered systems-
 
  • #4
so wait, did I get the multiple universe theory right? I filled in a bunch of holes in my knowledge while writing that. we call any loss decoherence.. if there was a fractional loss in which a very small amount of quantum information remained it would still be called decoherence wouldn't it? anyway, have there been any experiments to test whether decoherence is always complete?
 

What is multiple universe theory?

Multiple universe theory, also known as the multiverse theory, is a scientific concept that proposes the existence of an infinite number of parallel universes beyond our own. This theory suggests that there are other universes that exist alongside our own, each with its own unique set of physical laws and properties.

What is the evidence for multiple universe theory?

The evidence for multiple universe theory is largely theoretical and based on mathematical models. Some scientists also point to phenomena such as the cosmic microwave background radiation and quantum entanglement as possible indications of the existence of other universes. However, there is currently no concrete empirical evidence to support this theory.

Is multiple universe theory scientifically proven?

No, multiple universe theory is still a highly debated and speculative concept in the scientific community. While there are some mathematical and theoretical models that support it, there is not enough empirical evidence to definitively prove its existence. Further research and experimentation are needed to fully understand the validity of this theory.

How does multiple universe theory relate to the concept of the "many-worlds interpretation" in quantum mechanics?

The many-worlds interpretation is a specific interpretation of quantum mechanics that suggests that every possible outcome of a quantum event actually occurs in a separate universe. This is closely related to multiple universe theory, as it proposes the existence of parallel universes with different versions of reality. However, not all scientists agree with this interpretation and it remains a topic of debate in the scientific community.

What are the implications of multiple universe theory?

If multiple universe theory were to be proven true, it would have significant implications for our understanding of the universe and our place within it. It would challenge our perceptions of reality and raise questions about the nature of existence. It could also potentially have practical applications in fields such as quantum computing and space exploration.

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