But the question remains, can we travel back and forth between these different worlds with different laws and arrows of time? So far so good. While Sean Carroll is a physicist at Caltech, he describes that his blog “is absolutely not a Science Blog”. When we first set foot on the moon, it was a huge accomplishment for humankind. that would explain the half-life idea to me more perfectly.
My understanding is that an individual photon travels through space at the speed of light, which is independent of wavelength. Thanks for this Jim. However, after admitting that wormholes do appear to be theoretically possible, Tegmark commented that the actual trip would be rather gruelling because of the instability of the wormhole. Deutsch, of Oxford University, is a highly respected proponent of quantum theory, and suggests quantum theory does not forbid time travel, but rather sidesteps it, referring to the traveller’s ability to go into another universe, a parallel universe, and avoid the paradox limitations. There is something truly weird going on that defies our macroscopic sense of cause and effect. One of the ways Tegmark differentiated the levels was by stating that in Level One our doppelgängers could live somewhere else in three-dimensional space, but in Level Three they would live on another quantum branch in an infinite-dimensional Hilbert space. do you know of any experiments that you could direct me to in that regard? Her website is www.mariedjones.com. Now clearly these ideas differ. A post on his blog recently caught my attention: “Are Many Worlds and the Multiverse the Same Idea? what i find infuriating about the experiment is that the ‘timing’ of the decay of the isotope is assumed to be ‘unknown’ and i think that is just a flaw in the setup.
So we’ve replaced the cosmological multiverse, where different states are located in widely separated regions of spacetime, with a localized multiverse, where the different states are all right here, just in different branches of the wave function. Wormholes could also be another possibility for teleportation, as physicist Max Tegmark suggested while attending a panel in January of 2008 at MIT to discuss the science behind the movie Jumper starring Hayden Christiansen, about a man who can teleport all over the world at will. However, considering how big our universe is, it’s a drop in the ocean. This is the “Many Worlds Interpretation” or MWI, of quantum mechanics, originally formulated by physicist Hugh Everett in 1957. They posited that we can only see one of these potential states at once, and upon the act of observation, the state then splits into additional universes. Sean Carroll is a cosmologist and physicist specializing in dark energy and general relativity. what struck me then and still strikes me today that an equation that uses (for example) a 6.3 MeV bit of energy is a little too ‘specific’ The multiverse is a theory in the same vein as wormholes and time travel – interesting, but very hard to investigate. His response was that we must first work out the physics of these other universes, in order to determine when and whether it makes sense to “cross over from one to the other.” He did admit it is possible the stuff we are made of, the matter and forces that make us and hold us together, may not allow us to ever leave our four-dimensional universe and go to another. Is there any real science supporting it?
Max Tegmark and Brian Greene have devised classification schemes for the various theoretical types of multiverses and universes that they might comprise. thanks internet. I followed the discussion by Chris up until his statement “A photon communicates one bit of information, but it does so in an amount of time proportional to its wavelength”.
Thanks for the insight.
All matter can be converted to photons, so we can measure the “information transfer content” of the earth from its mass-energy.
LEVEL TWO: Universes with different physical laws/constants, other post inflation bubbles, far more diverse than Level Ones, these bubbles also vary in initial conditions as well as other seemingly immutable aspects of nature.
The third involves the universe splitting into two universes to accommodate the time traveller. =] Increasingly, however, people are wondering whether the first two concepts might actually represent the same underlying idea. However, I have always been stymied by some elements of this concept. A handful of scientists developed the concept of the multiverse we know today, but the first real idea probably came from, Are we really just one universe in an endless hive of universes? The many worlds approach could solve all the paradoxes in two ways. At least, until we observe it. Fair enough.
First, if we imagine the timeline of our universe as a line drawn on a board, then we can draw another line to represent the universe that branches off from the first. If we can get from here to there, that is. When you think about the multiverse theory and the possibility of countless universes, it’s mind-boggling. His level three is actually the many worlds of quantum physics. They are daring hypotheses about whose truth or falsity we are now in the dark.
String theory states that matter isn’t made of particles, but teeny-tiny vibrating “strings,” or loops of energy. They even were able to put the device in both states at once, so it vibrated both slowly and quickly at the same time, in another sort of Schrodinger’s Cat state of superposition. When you think about the multiverse theory and the possibility of countless.
Time travel, however, may actually be, 8 Inventions We can Thank Texas for Creating. I donate $5 a month to keep civilization’s intellectual embers smoldering. The cat is neither alive nor dead; it is in a superposition of alive + dead.
Wholeheartedly agree. Here’s how he explains the differences between those two ideas: When cosmologists talk about “the multiverse,” it’s a slightly poetic term. Now suppose that each valid sentence represents a conscious, internal experience.
Try as I may, our mysterious reality confounds me. Physicists have tried to find “a theory of everything” using string theory, so they can figure out the single system of equations explaining why our universe is the way it is. Possibly we both studied QM in the same era, back in the early to mid 1970s (the “Stone Age” to you youngsters).
Is the problem that I have to let go of the notion of time so that the concept of a “rate” vanishes? Using a wormhole, if one were to indeed go back in time to a certain point, or date, one would find there is only one version of that date, and that your presence back in time would simply be a part of the original version of that moment. Our scientific knowledge and technological achievement has yet to catch up to the limitless dreams of our imaginations.
But readers need to understand speculations of a scientist do not necessarily connote any scientific reality. Perhaps there is a plethora of multiple or parallel universes all around us, but we cannot see them.
The second of Kaku’s paths around the paradoxes involves having some free will to change the past, but within limits, so that you could go back and try to kill your grandfather, but something would prevent you from doing so. Site by XstreamThemes, When we first set foot on the moon, it was a huge accomplishment for humankind. Still, some physicists have been wondering about the connection between the two ideas. “You’ve just killed somebody else’s father. At which point, your apparent immortality will strongly suggest inevitable survival among multiple timelines. surely if there was enough study on individual u-238 atoms with precise enough detection arrays, we could get a better idea of the ‘actual’ energy states of the daughter nuclides and therefore be better able to predict their decays in time, no? Sabine Hossenfelder does a great job at explaining her objections, for example see her blog post http://backreaction.blogspot.com/2018/01/more-multiverse-madness.html. In the recent discussion of Many-Worlds and making universes, Jonathan Vos Post … Oh, then there is the problem of creating the machine. Many scientists look to the possible existence of other levels of reality, or other universes, as a way to make time travel work outside of the restrictions of light speed and paradoxes. Deutsch’s idea of parallel universes, the multiverse, or “shadow universes” was described in his interview with the Guardian UK in June 2010 (“David Deutsch’s Multiverse Carries Us Beyond the Realm of Imagination”) as being “co-incident with, somehow contiguous with, and weakly interacting with, this one.
That makes me wonder what principles of physics are sticking in the minds of the current generation. surely there is a ‘range’ of energies that can cause the exact same _macro_atomic reaction to occur. If we can get from here to there, that is.
Or at least, multiverse-in-an-horizon. The idea of a multiverse has been portrayed a lot in books, TV, and movies, including the very popular “Into the Spider-Verse,” which brings together parallel universes and heroes with spider powers.
In contrast to some other interpretations, such as the Copenhagen interpretation, the evolution of reality as a whole in MWI is rigidly deterministic. OK, I’ll toss in my own personal weirdness. In the simplistic Copenhagen interpretation, at the moment of observation the wave function “collapses” onto one actual possibility. You go back in time and you do the dirty deed. That would mean multiple universes. Many-World vs. Multiverse By drorzel on November 11, 2008. If that were the case then atomic or relativity theory or any other theory proposed to resolve some lacuna in the current state of scientific knowledge would have been rejected as possibly being true. mr. arends:
Yet, as the Many Worlds Interpretation states, likely not be able to interact once the split into another branch occurs. So where are the bits? Take a second to support Dr John Messerly on Patreon! surely there is a ‘range’ of energies that can cause the exact same _macro_atomic reaction to occur. What is a multiverse exactly? The Everett interpretation of quantum wave collapse is testable — from the internal perspective, and with enough patience.
A handful of scientists developed the concept of the multiverse we know today, but the first real idea probably came from Hugh Everett in 1954. Kaku also points to one theory where dark matter, which is an invisible form of matter surrounding our galaxy, might actually be “normal” matter in another universe. Is there but one consciousness that can follow different paths through a preexisting tree of lifetimes as cars can take the same Route from New York to Kansas City and then take a variety of routes from there?
And having objections to string theory or any other possible ideas to explain holes in our knowledge doesn’t mean they are “just imaginative speculation” having nothing “to do with scientific reality. The actual process by which the mind of the observer would select the single, measured state is not explained by the MMI. In an interview with Discovery.com called “Is Time Travel Possible?” he discussed wormholes as time machines and potential time travel tourists from the future, but with the caveat that “theoretically, it would take more than 100 years to create a 100-year time difference between the two ends of a wormhole, so there’s no way that our descendants could come back and tell us we’re wrong about this.” So, it’s all about timing, then… pun intended. Most notably, in the multiverse, the other universes are far away whereas, in quantum mechanics, they’re right here in different possibility spaces. Tegmark describes these levels in detail in his book Universe or Multiverse, and states that the key question isn’t so much whether there is a multiverse, but rather how many levels it has. The leading physicists in Everett’s time didn’t like his idea, so Everett ended up leaving the field entirely.
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