Borde vilenkin guth theorem pdf

At the same time, an attempt is made to present some rather involved combinatorial problems and. Bordeguthvilenkin theorem science, math and philosophy forum. Guth has researched elementary particle theory and how particle theory is applicable to the early universe. And in my view, vilenkins refusal to agree that his and bordes and guths theorem supports gods existence actually gives more credibility to craigs appeal, since vilenkins motives exonerate craig from the charge of special pleading. This is somewhat irrelevant to the discussion on hand, but i advise you to read with james sinclairs interaction with vilenkins models. Spitzer explains how the bordevilenkin guth theorem provides a strong argument that the universe must have had a beginning. The bordeguthvilenkin theorem, or the bgv theorem, is a theorem in physical cosmology which deduces that any universe that has, on average, been. The principle of mediocrity for the 2011 ras whitrow lecture, alexander vilenkin discusses the new cosmological worldview in which much of the universe is in a state of constant accelerated expansion, called inflation, and we live on one of the many bubbles with diverse properties that are constantly being formed.

Jul 08, 2017 the bordevilenkin guth bvg theorem is a strong demonstration from cutting edge astrophysics, proving that the universe had a beginning. At, vilenkin, in 2014, used the bordeguthvilenkin theorems premise that the bouncing local universes of an expanding or. William lane craig is fond of quoting vilenkin in defense of his kalam cosmological argument. Inflation is eternal into the future but borde, guth and vilenkins theorem says inflation must have had a beginning a geometric proof. Vilenkin discussed three models for an eternal universe in. Sep 25, 2012 the second major point craig makes is a claim that i ignored something important. Correct interpretation of the borde guth vilenkin bgv. Im not a physics whiz so youll need to simplify for me. He is victor weisskopf professor of physics at the massachusetts institute of technology. Borde, guth, and vilenkins pastfinite universe debunking. From there, he argues that b it had a cause, and that c the cause is a person. In this post we will see combinatorial mathematics by n.

Spitzer show how the borde guth vilenkin theorem proves that no matter what kind of. A spacetime that is on average expanding, h av 0, is past geodesically incomplete. Does this theorem make other cosmologies such as the hawkinghartle less likely than one that had a beginning. What is a precise statement of the bordeguthvalenkin. So i explained what every physicist who has thought about the issue understands. Alexander vilenkins analysis of the bvg theorem and. Alexander vilenkin explains his theorem the borde guth vilenkin theorem or the kinematic incompleteness theorem in simple terms that if you have a hubble expansion that has an.

Oct 18, 2016 apologetics atheism bgv bgv theorem big bang borde guth vilenkin borde guth vilenkin theorem chaotic inflationary conservation of matter cosmological argument cosmology debate debates einstein gtr kalam kalam argument kalam cosmological argument kca lawrence krauss progress of science quantum gravity quantum tunneling quantum vacuum sean. Roughly speaking, this theorem says that in any expanding cosmology, spacetime has to be incomplete to the past. Craig regularly appeals to the bordeguthvilenkin theorem bgv as strong empirical evidence that a the universe or multiverse or at any rate, matterenergy had an absolute beginning. According to vilenkins email, in the case of a quantum theory of gravity all bets are off. This theorem is new but it is worth learning about. Sep 23, 20 during your recent dialogue in sydney professor krauss presented personal email correspondence with cosmologist alexander vilenkin concerning the application of the borde guth vilenkin theorem to the beginning of the universe. Another theorem that proves that a geodesic is pastincomplete was published in 5 and is also. Bordeguthvilenkin theorem i think it is perfectly fine for christians to say that according to experts it does look like what is commonly called the universe did not exist forever. Alexander vilenkin explains his theorem the borde guth vilenkin theorem or the kinematic incompleteness theorem in simple terms that if. Guth,1,3 and alexander vilenkin1 1institute of cosmology, department of physics and astronomy tufts university, medford, ma 02155, usa. And in the context of religion, it has an unique parallel to the doctrine of.

Borde guth vilenkin theorem i think it is perfectly fine for christians to say that according to experts it does look like what is commonly called the universe did not exist forever. T he obstruction may be found in the bordeguthvilenkin bgv theorem. Vilenkin also points out that even if the bgv theorem is true, that the beginning of the universe could be a natural event, described by quantum cosmology. Honesty, transparency, full disclosure and the bordeguth. However, as shown by borde, guth and vilenkin 10, despite its great success the standard inflationary. Aug 30, 2012 can someone explain the borde guth vilenkin theorem to me. Vilenkin discussed three models for an eternal universe in his presentation, describing. And in the context of religion, it has an unique parallel to the doctrine of creation ex nihilo the belief that god created. Guth and arvin borde, as well as an examination of the various candidates for an eternal universe, vilenkin has come to see that all the evidence points in a singular direction.

Jul 24, 2015 the borde guth vilenkin theorem alexander vilenkin, phd. In poland, irena sendler lide elevated to a national hero and has helped poland heal its wartime history. In 2003, tufts cosmologist alexander vilenkin and his colleagues, arvind borde, now a senior professor of mathematics at long island university, and alan guth, a professor of physics at mit, proved a mathematical theorem showing that, under very general assumptions, the universe must, in fact, have had a beginning. I was watching a debate on cosmology where william lane craig uses the borde, guth and vilenkin theorem to say the universe had a. I just know that it shows that the universe more than likely had a beginning, but can someone explain the whys and hows of this. Dec 20, 2017 i was watching a debate on cosmology where william lane craig uses the borde, guth and vilenkin theorem to say the universe had a beginning. Jul 14, 2010 in any case wlcs deference to the bordeguthvilenkin theorem is an effective defense of this premise moving us well beyond the point of mere conjecture. 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. Craig on vilenkin on cosmic origins common sense atheism. Most of these are, as it were, visible to the naked eye but there is one gap that almost anyone beyond the physics community is perhaps illplaced to scrutinise, and that is to the socalled bordeguthvilenkin theorem, which asserts according to craig. At the same time, an attempt is made to present some rather involved combinatorial problems and to give the reader an idea of the methods of. Along with alexei starobinsky and andrei linde, he won the 2014 kavli prize for.

I recently watched this debate between sean carroll and william laine craig on the topic of theism. Most of these are, as it were, visible to the naked eye but there is one gap that almost anyone beyond the physics community is perhaps illplaced to scrutinise, and that is to the socalled borde guth vilenkin theorem, which asserts according to craig. The bordeguthvilenkin singularity theorem or bgv theorem was developed in 2003 by three leading cosmologists. Craig, krauss, vilenkin ja bordeguthvilenkin teoreema. There is a theorem due to borde, guth, and vilenkin which might be taken as evidence for a beginning of time. The 2003 bordeguthvilenkin paper pdf shows that almost all. Bordeguthvilenkin theorem science, math and philosophy.

Bordeguthvilenkin singularity theorem creationwiki, the. Vilenkin author see all 5 formats and editions hide other formats and editions. The bordeguthvilenkin theorem proves any universe expanding on average, including prebig bang and higher dimensional cosmologies, has a beginning. Inflationary spacetimes are not pastcomplete researchgate. Carroll explains why craigs argument misrepresents the bgv theorem. Can someone explain the bordeguthvilenkin theorem to me. Alexander vilenkin director, institute of cosmology, and l. How william lane craig misrepresents alexander vilenkin, part 1.

I was wondering if someone could possibly explain the case of the bgv theorem and what it says. Alexander vilenkins model of cosmic origins debunking. Mario livio, senior scientist, space telescope science institute, and author, most recently, of the equation that couldnt be solved alex vilenkin mines the subtlest phenomena shaping the cosmos to derive the grandest consequences. It is named after the authors arvind borde, alan guth and alexander vilenkin, who developed its mathematical formulation in 2003.

Interestingly, guth himself, along with collaborators alexander vilenkin and arvind borde, has likely closed the door on that possibility. How william lane craig misrepresents alexander vilenkin. Bernstein professor of evolutionary science office. Spitzer explains how the borde vilenkin guth theorem provides a strong argument that the universe must have had a beginning. So he appealed to the bordguthvilenkin theorem right from the start in order to guarantee a spacetime boundary in the past i. 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. 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. In the context of science, the model is just plain interesting.

Vilenkin on cosmic inflation and multiverse science vs. The bordevilenkin guth bvg theorem is a strong demonstration from cutting edge astrophysics, proving that the universe had a beginning. In 1982, paul steinhardt presented the first model of eternal inflation, vilenkin showed that eternal inflation is generic. Oct 11, 2012 the borde guth vilenkin results are simply not about quantum gravity. Apologetics atheism bgv bgv theorem big bang bordeguthvilenkin bordeguthvilenkin theorem chaotic inflationary conservation of matter cosmological argument cosmology debate debates einstein gtr kalam kalam argument kalam cosmological argument kca lawrence krauss progress of science quantum gravity quantum tunneling quantum vacuum sean. Many inflating spacetimes are likely to violate the weak energy condition, a key assumption of singularity theorems. A kinematic incompleteness theorem loose formulation a spacetime that is on average expanding, h av. Popular science i am also the author of the popular book, many worlds in one. In other words, the bgv theorem tells us that while there might be an eternal inflation scenario where inflation lasts. A kinematic incompleteness theorem loose formulation.

During your recent dialogue in sydney professor krauss presented personal email correspondence with cosmologist alexander vilenkin concerning the application of the bordeguthvilenkin theorem to the beginning of the universe. This quantum nucleation event refers to a paper vilenkin wrote in 1982 pdf which discusses the universe coming into being through quantum mechanics. In 2003, arvind borde and alexander vilenkin and alan guth published a paper claiming to prove that the universe cannot be infinitely old. Exploding stars, dark energy and the accelerating cosmos.

The borde guth vilenkin 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. Honesty, transparency, full disclosure and the borde. A wonderful tour of modern cosmology, wittily directed by one of the most gifted practitioners of the field. Correct interpretation of the borde guth vilenkin bgv theorem. Alexander vilenkins tunneling from literally nothing model pdf of 1982 paper. In the present book, the aim has been to set forth a variety of combinatorial problems in popular form and understandable language. Shellard i wrote a monograph, cosmic strings and other topological defects cambridge university press, 2000. In 2003, borde, guth, and vilenkin published an updated singularity theorem far grander in scope than the hawkingpenrose theorems. Inflationary spacetimes are incomplete in past directions. Subsequently in recent years since, the bgv theorem has become widely respected and accepted within the physics community. Guth, alexander vilenkin submitted on 1 oct 2001 v1, last revised 14 jan 2003 this version, v2 abstract. Aug 25, 2014 craig thinks we do have a strong reason, the borde guth vilenkin theorem. According to vilenkin s email, in the case of a quantum theory of gravity all bets are off.

Bordeguthvilenkin singularity theorem creationwiki. The principle of mediocrity for the 2011 ras whitrow lecture, alexander vilenkin discusses the new cosmological worldview in which much of the universe is in a state of constant accelerated expansion, called inflation, and we live on one of the many bubbles with diverse properties that are. The blackwell companion to natural theology edited william lane craig and j. 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. Kirshner, clowes professor of science, harvard university, and author of the extravagant universe. More general theorems showing that inflationary space times are. The borde guth vilenkin singularity theorem or bgv theorem was developed in 2003 by three leading cosmologists. Craig says that the bordeguthvilenkin theorem implies the universe had a beginning, that is false. This is somewhat irrelevant to the discussion on hand, but i advise you to read with james sinclairs interaction with vilenkin s models. On craigs appeal to the bordeguthvilenkin theorem in his. On craigs appeal to the bordeguthvilenkin theorem in. Pogosian2007 levon pogosian and alexander vilenkin, anthropic predictions for vacuum energy and neutrino masses in the light of wmap3, journal of cosmology and astroparticle physics, 29 jan 2007, available at pdf. The bordeguthvilenkin results are simply not about quantum gravity.

Arvind borde, alan guth, and alexander vilenkin developed the theorem based on the wellestablished fact that anything traveling on a geodesic shortest point between two points on a curvature through spacetime becomes what is known as redshifted when light or electromagnetic radiation from an object is increased in wavelength, shifting to. Interestingly, many theists use vilenkin s paper as evidence that the universe came from literally nothing but craig has already criticized this work. Sep 30, 2012 craig regularly appeals to the borde guth vilenkin theorem bgv as strong empirical evidence that a the universe or multiverse or at any rate, matterenergy had an absolute beginning. In 2003, tufts cosmologist alexander vilenkin and his colleagues, arvind borde, now a senior professor of mathematics at long island university, and alan guth, a professor of physics at mit, proved a mathematical theorem showing that, under very general assumptions, the universe must, in fact, have had a. The borde guth vilenkin theorem alexander vilenkin, phd. More precisely, if the average expansion rate is positive along a given world line, or. I think you are the one who is really shifting the burden of proof.

The bordeguthvilenkin theorem, and more on the my good. I was watching a debate on cosmology where william lane craig uses the borde, guth and vilenkin theorem to say the universe had a beginning. Craig thinks we do have a strong reason, the bordeguthvilenkin theorem. Partly he used the celebrated by theologians bordeguthvilenkin theorem, which says that a universe with an average expansion rate greater than zero must be geodesically incomplete in the past. It explains that if a universe could be expanding on average for a pastinfinity of time, then an impossible object would need to be. Furthermore, working with arvind borde and alan guth, he developed the bordeguthvilenkin theorem, showing that a period of inflation must have a beginning and that a period of time must precede it.

You can just reference the big bang, which has made some verifiable predictions and say that as of now there isnt any experimental evidence for anything. Polchinski2006 joseph polchinski, the cosmological constant and the string landscape, 31 mar 2006, available at pdf. This is craigs favorite bit of cosmology, because it can be used to argue that the universe had a beginning rather than stretching infinitely far backwards in time, and craig is really devoted to the idea. Aug 11, 2010 alexander vilenkins tunneling from literally nothing model pdf of 1982 paper. See more ideas about science, philosophy and william lane craig. Many worlds in one will open your mind to exponentially expanding universes that may lie just beyond our own. The second major point craig makes is a claim that i ignored something important. But craig was able to establish the beginning of the universe by appealing to something called the bordeguthvilenkin theorem. Millican knew all about craigs argument from the big bang cosmology and he proposed a dozen challenges to craigs premises. Craig emailed vilenkin about this issue, and vilenkin allegedly claimed that craig did not misinterpret the theorem. T he obstruction may be found in the borde guth vilenkin bgv theorem.