Lecture from the mini-series "Cosmology & Quantum Foundations" from the "Philosophy of Cosmology" project. A University of Oxford and Cambridge Collaboration.
It is fascinating to note that physics is really evolving in the direction of social sciences and environmental science. As I am a social and environmental science educated person, I find that striking, as I already objected to the notion that object and subject are in different universes in physics some thirty years ago when I was at university as a student. I still think the methods of physics can learn a lot from the methods and techniques of social and environmental sciences. It is very simple, it takes two to tango! You need an object and a subject interacting.By necessity, they can never be seperate systems. That is a notion well known in social and environmental sciences since their beginnings!
Lawrence Krauss claims during his lecture circuit of "A Universe From Nothing" that cosmology is turning into an environmental science as you say where A Theory Of Everything looks more like A Theory Of Anything with seemingly arbitrary fundamental constants and initial conditions.
This subject is very interesting. My dream would be to work in this field,but i know that i don't posess the knowledge and skill to do that. So the only thing left for me is to think about these questions and watch how smart and skilled people talk about these things :) Some people are passionated with cars, and the good thing for them is that they can buy and actually touch these things. I can't see and touch other universes. It's like i'm trapped in my mind. I wanted to ask,what exatly lies between universes in the bubble multiverse model? Thank you.
Same here. No math intelligence.... I deeply regret that. But I really tried and I could understand everyting about math, I just could no do it myself. By the way, I don't think you should think about what lies between bubble universes in a three dimensional way. Think of it as a mathematical construct, just existing in our minds. I personally don't believe it actually exists. It is just a mathematical state where no fields are present to create any order.
In the inflationary cosmology between those bubble universes there is inflating (exponentionally rapidly expanding) space. For that reason, those bubbles don't collide, and are invisible to each other.
Paimonds Rauls Fluid theory (Reproduction/Feed/Reasoning) decanted selfmultidimentionalover... The polydynamics of the movement generates pseudo-autonomy as material property, of the autogenous phenomenon; existing.(...) Simultaneous as my unidimensional variability... unidimensional variability = live-beings
If, when the _object_ interacts with it's _environment_ = *decoherence* And, when the _object_ interacts with the _subject_ = *observation* Then, the deeper we look to *observe* _objects_ in deep space (as long as there are no other _observers_ than us capable of looking into deep space), are we not *decohering* the _objects_ we 'find' there by collapsing their wave functions? Literally creating that which we observe through *_interaction at a distance?_* i.e. do we bring forth into creation the very Universe we observe, from it's initial wave function (or is 'the Moon really there when we're _all_ not looking')? PS. I'm too ignorant to properly frame this question, so please don't take me too seriously. I believe that Max Tegmark even claims that individual Quarks are _observers_. If so, it's moot anyway. Cheers!
If decoherence is the object interacting with its surroundings, doesn’t that imply that the object comes into existence irrespective of being observed? And therefore conscious observers aren’t necessary for decoherence?
Hi "HumanChemistry101", I'll be happy to discuss these interesting questions with you if you can be a bit more specific about what you're objecting to. That our universe has an entropy of about 1E89 bits? That the arrow of time has something to do with entropy? ;-)
thanks! now It's becomig obvious, that Steven Weinberg has lost his bet against the strong anthropic principle, when he said: "It is almost irresistible for humans to believe that we have some special relation to the universe, that human life is not just a more-or-less farcical outcome of a chain of accidents reaching back to the first three minutes, but that we were somehow built in from the beginning…. It is hard to realize that this all [i.e., life on Earth] is just a tiny part of an overwhelmingly hostile universe. It is even harder to realize that this present universe has evolved from an unspeakably unfamiliar early condition, and faces a future extinction of endless cold or intolerable heat. The more the universe seems comprehensible, the more it also seems pointless."
I pretty very much miss a lecture in which the speaker will be discussing between information dynamics and information measurements. With in a room, measuring information becomes both random orderly with increasing dynamical time of information (bottom-up and top-down time dynamics)but the dynamics of this info is still deterministic in nature, Any way; We don't know whether we even need to know anything in the universe; but what we certainly know is that things need to be known whether we want or not, that's why they communicate with us here and there. The problem is that we all don't know the language in which all things communicate as a single communicative system called the universe. But when we grasp the language in which the universe communicates, we end up knowing things which we never wanted or intended to know.
I don't really understand the math, but if we can make an entropy of a system decrease just by looking at it, why were not scrambled eggs turn into eggs? In fact we look at it while we are eating it. Or did I miss something here?
***** Thermodynamics only applies to the particles of the standard model so the abundance of dark matter and energy is completely irrelevant to the laws of TD.
***** It's a bit hard to understand you but I think I get your main points and there are problems with what you say. First, the LTD do not rely on a fixed amount of particles, they rely on a system being isolated. The number of particles can alter based upon the reactions that take place in the system. Second no, there cannot be any interaction between normal matter and dark energy/matter that would render LTD obsolete. Dark energy has no relevance on the appropriate scale factors and we know that dark energy does not interact at all.This is why it is so hard to discover because it either does not interact with matter or does so so incredibly infrequently as to be statistically insignificant. Third, TD is not local, this is an undisputed fact and no perpetual motion machines are not possible. Without a temperature gradient no work can be done and this is true wherever you are. Fourth, we know that dark matter/energy are irrelevant to TD and there is not a physicist anywhere who would say otherwise. What is relevant to any classical description such as TD is determined by QFT so we KNOW that dark matter/energy are irrelevant because they simply do not interact at the relevant scales with sufficient strength/frequency. Huge detectors have been searching for dark matter for years and trillions of dark matter particles pass through every square inch of these detectors EVERY SECOND! And how many particles have we found? None, zip, nada. Why? Because they don't interact so to suggest that they could somehow affect LTD is ludicrous!
***** I'm not really sure what you mean by localised. We have mapped the position of dark matter throughout the universe and it is present around all galaxies so is definitely not local. And as for dark energy this is perfectly uniform throughout all of the universe with a constant energy density throughout spacetime. This is why the effects of it increase exponentially with spatial expansion. So I really don't know what you mean by localised buty maybe you can explain when you get more time!
The students in that parallel universe of actual student blockheads singing in Acapella boy band style about thermodynamics and decoherence was hilarious and surreal. My qubits are all messed up now.
I think this is my favorite lecture at this conference (Sean Caroll and Nick Bostrom come close). Max Tegmark is a great lecturer and also has written some really good books. He also dives into artificial intelligence in his book Life 3.0 and I highly recommend it!
Living systems exploit thermodynamics via information. 08:18 "the rabbit being just rearranged clover and grass", has to be some kind of oversimplification. Somehow the clover and grass had to be turned into DNA in it's father's and mother's reproductive cells. How does clover become rabbit DNA? First you need a rabbit to eat clover, where did you get the rabbit. Whence came the information, the energy, the matter, the space, the characteristics of the behavior of interactions? and so forth. Our universe is like one of those "game of life" computer programs. A "game of life" computer program requires, first a source of energy, then a computer, and a computer programer to write the program and then you can begin the program.
the world we live in is not like a game, the universe is more like a self-extracting archive, which is trying to restore the initial code after the full check of the grand design by the finite time.
SeanMauer just wanted to emphasize that though thermodynamically probabilistic the evolution of life undoubtedly has its final goal to reach. it's not just a more-or-less farcical outcome of a chain of accidents..
Sergey Novikov Good enough, but I think that this phenomenon of an open-ended thermo-probabilistic nature does not account for it's origin. In other words the process does not reveal the origin.
SeanMauer otherwise is contrary to the foundations of quantum mechanics and the main laws of conservation for closed system.. the universe and its observer exist as a pair. it's a deterministic physical process of their evotution in accordance with Schrödinger eq..
A "universal origin" of all information, is not quite the same as the "origin of the universe", in the literal sense that statement is typically used. Specifically, the universe is dynamic and so originates universally-instantaneously coordinated by synchronization in the context of the Quantum Fields Mechanism, ..cause-event matrix of temporal superposition. Agreed, the 2nd Law of Thermodynamics reference does sound arrogant, because it's an asymmetric comment on the apparent surface of events. It makes the same claim as the "arrow of time" statement of directional changes without considering the need for reciprocal balance of the constancy of information. An indifferent statement is acceptable as the prelude to an hypothesis, and it is annoying to have to wait for a properly qualified Philosophical science discussion to put into words what is generally considered "near enough" operationally, until the topic is expanded upon in light of observations. Decoherence is a timing-phase pulse-shift in the same context as +/- annihilation of matter and reciprocal ("gravitational" or chemical type) condensation(?), in modulation-demodulation totality. Ie the BBT is the readable label on the "observable universe" box that contains a mostly dark Universe-event. Fun, to sing the song of imaginary inflation.
This video is pretty good until about 12:51-15:13 when says the asymmetry in the universe, explained by entropy, and broken eggs, has something to do with Claude Shannon and how “our entropy is 10E89 bits”, below the limit of “10E120 bits or so”. Tegmark is taking a the audience for a ride on what’s called the “Shannon bandwagon”.
If you want to know the answer to all of these questions, you don't need a PhD in Quantum Physics, you just need to know thee Self. Don't waste your time, this intellectula understanding will never bring fulfillment to you. Study Vedic Science, they already figure all this stuff out and have technique to contact directly the Self.
Despise this scientific legalise speak, so I'll translate: scientists are the jailers, taught 'knowledge' is the prison bars, and the subject is the prisoner. I'm sure I don't need to tell these 'geniuses' what chaos manifests. Cause and effect, baby; the absolute bane of the system. Yours sincerely, a hyper-dimensional logarithm.
