Before the Big Bang 1 - Loop Quantum Cosmology Explained
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What happened before the big bang? It's one of the most popular questions in astronomy. When the observable universe is smaller than an atom our classical theory of gravity, Einstein's theory of General Relativity, breaks down and needs to be modified with a theory that can also accommodate the physics of the sub atomic world, quantum mechanics. Armed with a quantum theory of gravity cosmologists may be able to tackle the question of what happened before the big bang. Loop quantum cosmology is considered one of the most promising candidates for such a theory. In this film we interview some of the leading scientists in the field to explain this exciting theoretical development. We ask what happened before the big bang? Is there a multiverse? Why was the entropy of the universe so low in the past? Could the Planck spacecraft anomalies be signs of the pre big bang universe? How do we test these ideas? Should we accept the claims that the universe really has a beginning? In some sections of the film there is CGI animation to help visualise the evolution of the universe. These are for illustrative purposes only and should not be taken too literally. For example, the big bang is not an explosion from a single point and a quantum bridge would not really look like a tunnel; the universe is 4-dimensional, not 2- or even 3-dimensional, so these images are simply to assist the explanation. All of the video was shot by us on a Sony VG900 full frame video camera. Other images were provided by: Opening photos: our teacher and friend Roger Wesson (European Southern Observatories) Eternal inflation animation: Anthony Aguirre & Nina McCurdy (University of Santa Cruz) Hourglass universe, continuous space time and Big Bang Observer animations: Alex Bennett Spin foam animation: Thomas Thiemann (FAU Erlangen -Nurnberg), Middle Science Communication (Potsdam), Exozet (Potsdam) Gamma Ray Burst: European Southern Observatories Black hole simulation: William East (Princeton University) Thanks to Sabine Hossenfelder at Backreaction blog. Thanks also to Marcus at physicsforums.com Music is "Shot in the Head" by Moby and is used with permission. Source material is embedded within the video; click pause to read more details. The content of the final version of the film was checked and approved by the interviewees. Many thanks to both of them: Abhay Ashtekar (Penn State University) Ivan Aguillo (Cambridge University)
Comments
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so basically enough smart people realized the big bang theory was bs, so they added the bounce to not seem like idiots
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a black hole is in the center of the universe, the universe is no expanding, it is been pushed away from the black hold in the center, we are the result of a big black hole eating another universe....
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none of this is true, once matter reaches the outer space limits a big black hole will start consuming everything in order to create another universe on the other side....
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I don't agree that gravity behaves quantum mechanically. a force is constant. for gravity and it's effects to be probabilistic, the underlting force behind gravity couldn't be constant in a vacuum as physics has expressed since it's early stages. I believe that particles are quantum and indefinite, however. Einstein had certain qualms with accepting that the system for our reality contains certain facets that render indefinite. while most physicists scratch their heads at the behavior of particles at the quantum level, I believe the explanation is rather simple. Gravity is a force; just like magnetism. and just like magnetism, gravity has a threshold. while this threshold relies on how close two masses are to one another to influence one another's gravitational field, I also believe mass is also a threshhold. particles are very light. so light that they may not even have the ability to act in definition; being that their nonexistent mass pushes their classification outside of the mass threshold. if this theory is correct, it might explain exactly why particles behave so much differently in spacetime than other fabrics of mass. I don't think that the idea is far fetched. I think particles are logical and thus do not act with some stroke of magic, but rather a stroke of freedom. compare quantum particles to human decision. given the slightest information about someone, you can attempt to predict their behaviors. but will your assertions be so accurate? after all, it is this other person's mental process and, in the end, they do have the freedom to think and behave as they so choose. it's not until you begin to truly understand someone's character that your accuracy in regard to their predictive behavior becomes less of a prediction and more of a psychologically accurate judgement. we do not understand particles enough at the quantum level yet to accurately understand a particles psychology and decision making behind choices of freedom.
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Amazing documentary of which I understood next to ten plank lengths.
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The biggest problem is it to physically impossible to make something from nothing..try it..Bake a cake with no ingredients. .Tell me how it taste..
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I like these STORY telling HOURs.
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Fantastic series!
If you ever need your subjects in focus, give me a call. -
Who s the chick?
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Thank you to whomever is responsible for the accurate closed captioning.
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Notice the "complex" mathematics on the board behind them, .. it explains it all lol. I had my 2 year old nephew decipher it and he says it is all correct. Ooops, I said "he", a hate crime today. I must be one of those "Creationists" who still has a gender.. Besides, why is she holding a pencil? Don't you just love the staging, .. hilarious!
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time 7:32 The main goal of any theory of quantum gravity is to tell what happens when the theory of general relativity fails. Hmm, .. so when one sci-fi fairytale becomes too embarrassing to be called an actual "scientific theory", keep making up something completely disconnected from reality, or science which is; "observing the world around us"! Surely "together" as a One World we can create a "regime" that will define "Order" that no one will dare to contradict. This is where 666CERN and her Kali-dancers' and the opening of a portal to the supernatural realm at Temple 6LHC comes to our aid. All this, .. with the help of Intel and goddess Lady Gaga along with your silent prayers aimed at 6LHC at certain days of the month, a Creator God will become soo .. far away from the mind of men that the very word "create" will be redundant.
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Covered what? There is no Big Bang dumbass.
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The sound quality is so POOR that this is torture to listen to
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I'm sorry..I'm no creationist, but the big bang big bounce whatever is brought to us via a man made up language (Mathematics). Man decides what math is (beyond basic math that can apply to a person's everyday life), so why should anyone put any stock in this bullshit? People that follow the religion of Science often ridicule people that follow God based religions for following a book written by man. This is ironic considering that is exactly what people that follow the religion of Science are doing...following the language of advanced mathematics that was written by man. lol too funny.
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Interviewer with the blackboard in the background has no idea what he is talking about!
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Urr, my brain hurts!
Seriously very interesting, if not very easy to comprehend. Maybe I'll still be around when the answer is found. -
Based on contemporary equations explaining "THE BIG BANG THEORY", how is it the whole universe can be shrunk down to a singularity with out imploding out of space-time, but a galaxy, star, planet, or even an atom can't?
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Somebody knows what our super computers tell us about this??
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Implosive positive energy compression multiplying inward +1=0 now -1 exploding!!!
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