Note for example that the bgv theorem uses a classical picture of spacetime. Gauger published a simple criteria for two matrices to be similar. Bgv theorem states that any universe which is on average expanding throughout its history cannot be eternal into the past but must have had a beginning. The bordeguthvilenkin singularity theorem or bgv theorem was developed in 2003 by three leading cosmologists. Im sorry gary, but you are just not correct in your assertions about this. The bgv theorem in effect relegates both views to cult status, akin to flatearthers, who believe something without evidence, something completely disproven by science, by blind faith alone, simply because they are terrified of the implications. I challenged craig to explain why this wasnt a sensible example of an eternal universe, one that was in perfect accord with the bgv theorem. Let the universe be the universe posted on september 25, 2012 by sean carroll my article in the blackwell companion to science and christianity, which asks does the universe need god. This localization formula is very well known, but the author hopes to adapt this proof to obtain a more general result in the future. But that theory raises more questions about the universes origins than it answers, including the most basic one. In the kalam universe is taken as all of physical reality. May 22, 2018 the bgv theorem gives us reason to believe that such models simply cannot be constructed. A deeper, and central problem of approximation theory is to investigate the rate at which the degree of approximation.
One of the finetuning arguments frequently used is the low entropy state of the universe at the big bang. This is absolutely devastating for atheismnaturalism. Your not acknowledging the clear and specific reference i provided that the authors stated that the bgv theorem only applies to the universe have a. The string landscape model satisfies the bgv theorem the aboriginal 3branes in the cyclic ekpyrotic model which is not inflationary satisfy the bgv theorem the primordial string perturbative vacuum in the prebig bang inflationary model, while exempt from bgv, is metastable throughout and therefore cannot be infinitely old. The bordeguthvilenkin theorem has proven the universe had a beginning no matter what kind of scientific model one. The bordeguthvilenkin theorem, or the bgv theorem, is a theorem in physical cosmology which deduces that any universe that has, on average, been expanding throughout its history cannot be infinite in the past but must have a past spacetime boundary. In general, the cosmological family of arguments attempt to show that some initial condition necessarily preexists the universe, and declare this initial condition or its cause to be god. But it is completely compatible with the singularity theorems. The bgv borde, guth, vilenkin singularity theorem is certainly interesting and important, because it helps us understand where classical gr breaks down, but it doesnt help us decide what to do when it breaks down.
Roughly speaking, this theorem says that in any expanding cosmology, spacetime has to be incomplete to the past. Craig says that the bordeguthvilenkin theorem implies the universe. By now, theres scientific consensus that our universe exploded into existence almost 14 billion years ago in an event known as the big bang. How william lane craig misrepresents alexander vilenkin. The products and publishing solutions are based on the original adobe technology and dassault solutions technology and are therefore fully compatible with acrobat and catia v5. Sep 25, 2012 let the universe be the universe posted on september 25, 2012 by sean carroll my article in the blackwell companion to science and christianity, which asks does the universe need god.
In the regime where gravity becomes essentially quantum, we may not even know the right questions to ask. For instance, 9 in genesis, the existence of the one and only creator god is. It is an issue ultimately of a selfrefuting position. Decreto ley 25988 pdf decreto ministeriale 10 marzo 98 pdf download 1decretoley pdf downloadpramiesoftferregestrirenquake. The authors of the bgv theorem, and the scientific consensus, is that this universe had a beginning. This now tells how precise the creators aim must have been, namely to an accuracy of one part in 10 to the power of 10 to the power of 123.
In the regime where gravity becomes essentially quantum, we. Once the argument for creation is over, the atheist will retort oh yeah. Wallace marshall and i are debating whether or not enough evidence points to the existence of a god. I have some atheist friends who believe in some kind of creator or. The bgv theorem does not conclude that our physical existence is not past infinite, and as cited it acknowledges alternative alternatives to the nature of our physical existence beyond our universe. Anguspure, i think we are closing in on the underlying issue. Aug 12, 2017 the bgv theorem is not about inflationary models but about any universe that, on average, expands. Also, the bgv theorem has this to say, quoted directly from the paper many inflating spacetimes are likely to violate the weak energy condition, a key assumption of singularity theorems.
On the other hand, a few works aimed to automated theorem discovery atd for short 7 and automated theorem generation atg for short 1,8, 22 have been done, from the viewpoint of the. Why i am not a creationist adelaide chapter christian. The bgv theorem is analyzing if claims like lindes are consistent with pasteternal sequences and then only under classical physics, which we know is false, so the theorem is not applicable to reality anyway. The reaction to vilenkins bgv theorem has led many atheists to. When this is taken into account when using evidence from cosmology, there is no equivocation. To clarify, a potentially infinite means that infinity is just a limit which is never reached 3. Craig presents his interpretation of the bgv theorem, and claims it implies the universe must have had a beginning, and time cannot extend infinitely into the past. The main problem in incorporating martins arguments is that he is responding to an old 1979 description of the argument. The bordeguthvilenkin singularity theorem or bgv theorem was developed in by three leading cosmologists. Here we offer a simple kinematical argument, requiring no energy condition, that a cosmological model which is inflating or just expanding sufficiently fast must be incomplete in null and timelike past directions. Many inflating spacetimes are likely to violate the weak energy condition, a key assumption of singularity theorems. Loosely speaking, our theorem states that if the universe is, on average, expanding, then its history cannot be indefinitely continued into the past. The criteria required equality of the characteristic polynomials.
The source you are quoting is extremely biased, and wrong. Pdf big bang cosmology and christian theology joshua moritz. Guth would avoid the implications of their theorem by holding our hope for the carrollchen model, which denies the single condition of the bgv theorem. He received a bachelor of arts in communications from the evangelical protestant wheaton college in wheaton, illinois, a summa cum laude master of divinity from trinity evangelical divinity school in deerfield, illinois, a ph. The good thing about this theorem is it holds true regardless of what quantum theory of. The ageold debate between science and faith invites more players to the fore in this book. With the proof now in place, cosmologists can no longer hide behind the. The bgv theorem 3 shows that if a universe is on average everywhere.
This allowed them to avoid the god questionwho or what caused the universebecause. Some cosmologists have argued that a universe could have no beginning, but simply always was. See more ideas about science, philosophy and william lane craig. The way in which aristotle seeks to show that the universe is a single causal system is through an examination of the notion of movement, which finds its culmination in book xi of the metaphysics. The bordeguthvilenkin theorem is a complete nightmare for some atheists who believe the universe to be eternally existing without a.
In other words, the bgv theorem tells us that while there might be an eternal inflation scenario where inflation lasts forever to the future, inflation still has to have. The rather astonishing fact that it took einstein the creator of general relativity, the master. Carroll correctly observes that the bgv theorem relies on spacetime being classical. The bottom line is that as of this writing, the string landscapeeternal inflation multiverse offers the only path forward for cosmology that doesnt smack of a creator. In case its not obvious, that bgv assumption is the one that seems to point to a beginning. Aguirre claims that the bgv doesnt even prove inflation cannot be past eternal. Mar 20, 2017 the theorem is often misunderstood to be a singularity theorem. It is named after the authors arvind borde, alan guth and alexander vilenkin, who developed its mathematical formulation in 2003. But that doesnt prevent the existence of another spacetime on the other side of the boundary that doesnt obey the condition of the theorem. It is quite true that the bgv theorem is proven only for classical metrics, although i see no particular reason to believe that its conclusion if the universe is always expanding, than it had an edge breaks down for quantum spacetimes. Carroll explains why craigs argument misrepresents the bgv theorem. Further, regarding the bgv model, vilenkin says that, based on his own current work with garriga, it is not at all clear that the bgv assumption expansion on average will be satisfied. The theorem is based on, what alan guth calls a wellknown fact, something traveling on a geodesic through an. Nov, 2018 by evan minton this is a question that many, many atheists have asked christians whenever christians try to argue for god as creator and designer of the universe by using, for example, the kalam cosmological argument, or the fine tuning argument.
Characteristic free, improved decidability criteria for the similarity problem, linear and multilinear algebra 5 1977, 153158. For example, you can divide any finite distance in half, and then into fourths, and. The 2003 bordeguthvilenkin paper pdf shows that almost all inflationary. He offers the bordeguthvilenkin bgv theorem by way of evidence. Because craig refers to vilenkin in nearly all his debates and uses vilenkins research to support one of his major arguments for the existence of god, i wanted to take the time to address the matter in depth, which. How william lane craig misrepresents alexander vilenkin, part 1. Essential viewing on godless cosmology richard carrier. The theorem is often misunderstood to be a singularity theorem. Proponents of the origin of life as a natural process and natural selection as a mechanism of evolution come face to face with advocates for the intervention of a creator, while other scholars believe that the gulf between science and religion should be bridged. Wintery knight integrating christian faith and knowledge. D940007 gam movable boom rest rod cannot be fitted on bgv.
That the evidence points to god iii by wallace marshall, ph. For a long time scientists held that the universe was eternal and unchanging. Krauss reused this email during the melbourne dialogue. On the kalam cosmological argument boxing pythagoras. The bgv theorem gives us reason to believe that such models simply cannot be constructed. In this article we give a totally new proof of the integral localization formula for equivariantly closed differential forms theorem 7. Psychobabble a portmanteau of psychology or psychoanalysis and babble is a form of speech or writing that uses psychological jargon, buzzwords, and esoteric language to create an impression of truth or plausibility. In other words, it shows simply that the big bang theory, without an explanation of the past boundary the beginning of time, is not sufficient to provide a. Bordeguthvilenkin singularity theorem creationwiki, the. On the kalam cosmological argument one of the most popular arguments for the existence of god is known as the kalam cosmological argument.
By evan minton this is a question that many, many atheists have asked christians whenever christians try to argue for god as creator and designer of the universe by using, for example, the kalam cosmological argument, or the fine tuning argument. Alexander vilenkin says william lane craig is right about bgv. I dont think you have really critiqued the use of the bgv theorem, which seems to rule out a eternal classical spacetime at the least but then it may be ive misunderstood the theorem. N728014 at7 7 m round boom for counterweight barrier. What is wrong with the kalam cosmological argument. Wall like bgv proves theorems that apply to semiclassical gravity classical spacetime with propagating quantum fields see comment from aron below, and then speculates the results may hold in full quantum gravity and there is a reasonable possibility that the penrose singularity theorem can be proven even in the context of full. For example, you can divide any finite distance in half, and then into fourths, and then into eighths, sixteenths, and so on to infinity. A pasteternal universe would run afoul of the bgv theorem. There is a theorem due to borde, guth, and vilenkin which might be taken as evidence for a beginning of time. It is quite true that the bgv theorem is proven only for classical metrics, although i see no particular reason to believe that its conclusion if the universe is always expanding, than it. Here we offer a simple kinematical argument, requiring no energy condition, that a cosmological model which is inflating or just expanding sufficiently. Aristotles fundamental principle is that everything that. Krauss used this email to argue that the bgv theorem did not necessarily indicate a beginning. Borde, guth, and vilenkins pastfinite universe debunking.
As noted above, motion, for aristotle, refers to change in any of several different categories. If the multiverse exists, then its universe generator is necessarily. Theorems 3d pdf publisher for catia offers a 3d pdf publishing solution for all sizes of organisation. But if the universe is really completely selfcontained, having no boundary or edge, it would have neither beginning nor end. P1176 scs 1 serial connection board for qsc d ma, libra c ma, libra c mv, libra c lx, venere d, leo d ma, leo mv, rigel 5 and altair p. Does the beginning of the universe require a cause. One could not possibly even write the number down in full in the ordinary denary notation. The theorem allows for some periods of contraction, but on average expansion is assumed to prevail. Thus inflationary models require physics other than inflation to describe the past boundary of the inflating region of spacetime. This has essentially shut the door for the possibility of in ationary models to resolve the big bang singularity issue at the classical level. Bordeguthvilenkin singularity theorem creationwiki. With respect, even were it babble, it is not psychobabble. Once again, the bgv theorem of 2003 shows that any universe that has been expanding throughout its history at a rate higher than 0 cannot be infinite in its past.
William lane craig, born in 1949 in peoria, illinois, is an american christian apologist, philosopher, and theologian. Because craig refers to vilenkin in nearly all his debates and uses vilenkins research to support one of his major arguments for the existence of god, i wanted to take the time to address the matter in depth, which will. The bordeguthvilenkin theorem, or the bgv theorem, is a theorem in physical cosmology. Subsequently in recent years since, the bgv theorem has become widely respected and accepted within the physics community. The bgv theorem states that if the universe is, on average, expanding, then its history cannot be indefinitely continued into the past. Sollog stunned the world of academia and theologians with this break through book in 1995. Correct interpretation of the borde guth vilenkin bgv theorem. This gambit is, however, unsuccessful, since the carrollchen model does so only by positing a reversal of the arrow of time at some point in the finite past. Whenever william lane craig is forced to retreat from his use of the standard big bang model, he will often cite a paper by arvind borde, alan guth, and alexander vilenkin.
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