"Before the Big Bang?" (2005), the original lecture by Roger Penrose (part 1 of 9)

"Before the Big Bang? A new perspective on the Weyl curvature hypothesis"

This is the original lecture by Roger Penrose on his fascinating new model of the universe, its origin and future, and of the "Big Bang"; held at the Isaac Newton Institute for Mathematical Sciences (November 7th 2005).

Originally published at http://www.newton.ac.uk/webseminars/pg+ws/2005/gmr/gmrw04/1107/penrose/index....

See also http://www.youtube.com/watch?v=ghbDGBOYp1g and http://www.perimeterinstitute.ca/index.php?option=com_content&task=view&a... for other lectures by Penrose on this theory.

See also http://www.youtube.com/watch?v=pEIj9zcLzp0 for an interview with Roger Penrose on his new model.

See also http://accelconf.web.cern.ch/AccelConf/e06/PAPERS/THESPA01.PDF for Penrose's academic article about his theory.

See also http://arxiv.org/pdf/0710.3879v2 for an article about Penrose's "Before the Big Bang" idea, verifying that some of Penrose's basic predictions are mathematically correct.

NOTE TO THOSE POSTING COMMENTS ON THESE VIDEOS: Please stay focused on the topic. All irrelevant comments will be removed without warning.

SUMMARY:

There is now a great deal of evidence confirming the existence of a very hot and dense early stage of the universe. Much of this data comes from a detailed study of the cosmic microwave background (CMB)—radiation from the early universe that was most recently measured by NASA's WMAP satellite. But the information presents new puzzles for scientists. One of the most blatant examples is an apparent paradox related to the second law of thermodynamics. Although some have argued that the hypothesis of inflationary cosmology solves some of the puzzles, profound issues remain. In this talk, Professor Penrose will describe a very different proposal, one that suggests a succession of universes prior to our own.

Sir Roger Penrose is a highly distinguished mathematician and theoretical physicist. He is currently emeritus Rouse Ball Professor of Mathematics at Oxford University. His research interests span many aspects of geometry, having made contributions to the theory of non-periodic tilings (Penrose tilings), to general relativity theory and quantum foundations. He has also had remarkable insights in the science of consciousness. His main research programme is to develop the theory of twistors, which he originated over 30 years ago as an attempt to unite Einstein's theory of general relativity with quantum mechanics.

In 1994 Professor Penrose was knighted by Queen Elizabeth II for his service to science. He has received numerous prizes and awards, including the 1988 Wolf Prize, which he shared with Stephen Hawking for their understanding of the universe, the Dannie Heinemann Prize, the Royal Society Royal Medal, the Dirac Medal and the Albert Einstein prize to name a few.

Penrose is a prominent lecturer and author. His 1989 book The Emperor's New Mind became a best seller and won the 1990 (now Rhone-Poulenc) Science Book Prize. His latest books are Shadows of the Mind (1994), The Nature of Space and Time (1996) with Stephen Hawking, The Large, the Small and the Human Mind (1997) and Road to Reality (2004).

Additional tags: "Big Bang" "Roger Penrose" "Oxford University" "Newton Institute" physics cosmology astrophysics "quantum mechanics" "quantum cosmology" mathematics "cyclical model" "maximum entropy" entropy theory universe origin past future "big crunch" cosmos "space-time geometry" "phase-space" inflation thermodynamics "second law of thermodynamics" "thermal equilibrium" "black body spectrum" "cosmic background spectrum" "cosmic microwave background temperature" "dark energy" "positive cosmological constant" "dark matter" "black hole" singularity "time asymmetry" "quantum gravity" "principle of equivalence" "space-time curvature" "Weyl curvature" "Ricci curvature" Riemann astigmatism thermalization "pre-Big-Bang" "horizon problem" "inflationary cosmology" "standard cosmology" "spherical symmetry" "Minkowski space" "Hawking radiation" "Hawking Black-Hole evaporation" "conformal geometry" "conformal rescaling" "Weyl conformal tensor" "conformal invariance" "Einstein cylinder" "gravitational free field"

Category:

Science & Technology

Tags:

• physics
• cosmology
• astrophysics
• quantum mechanics
• quantum cosmology
• mathematics
• maximum entropy
• space-time geometry
• phase-space
• inflation
• thermodynamics
• thermal equilibrium
• dark energy
• black hole
• singularity
• time asymmetry
• quantum gravity
• equivalence
• space-time curvature
• astigmatism
• thermalization
• spherical symmetry
• Minkowski space
• conformal geometry
• gravitational free field

[iceee187]

Is this saying that everything has a cycle? 

[ImperatorAquila]

@iceee187 No. Penrose's model is not that of a cyclic universe, but more like an endless string of pearls, with the string+pearls-complex being the real (endless) universe, and with each pearl constituting a universal aeon, which we at the moment believe to be a "universe" in itself. But that may be an insufficient image. For some reasons I'm currently thinking about Matryoshka dolls. ;)

[SharpTwoEdgedSword]

@ImperatorAquila Science can't compute or include infinity in a theory.

[ImperatorAquila]

@SharpTwoEdgedSword I remember using infinity in my mathematical calculations, already in high school. But it's not a relevant issue here, because the infinity of the aeonic series has no bearing on the discrete calculations which would be applied to deal with the present aeon. Hypothetically, the only 2 important aeons are our current one (discrete) and the one before, whose echo (the "ripples") might still be detectable in the CMB.

[nNorthWestern]

@SharpTwoEdgedSword you are so wrong, there are many different kind of infinities it all depends on the definion of ¨end¨

your just making smart ass comments becouse you really dont even know what science means

[Campestral]

@MrAquinoflavio yep the black hole is between be and gee

[MrAquinoflavio]

@ImperatorAquila : Does this model help to explain the so called ''fine tuning problem'' in physics?

[MrAquinoflavio]

@ImperatorAquila : Is that compatible with the presence of a singularity of the friedmann-lemaitre standard model?

[albedoshader]

@SharpTwoEdgedSword: So, what is renormalization in physics about? And how about infinite series, cardinal numbers etc. ?

[SnDkInGz]

@iceee187 yes, he is saying the universe expands to a specific size and then collapses on its self and then basically sucks its self into one point(the big crunch) then explodes back out(the big bang) and the universe starts all over again.

[dalejosef]

@SharpTwoEdgedSword Why not?

[LordShield2012]

The only thing i didn't point out was that the cycle of a Galaxy or black hole is infinite or maybe until it runs out of energy. The Big bang is the point where it is trying to recycle the energy that is has already use to try and keep it self going. My point being that every galaxy could be its on particle, subatomic particle, atom, quark, leptons, or even a Peron. There could even be that every Galaxy could be it very own Galaxy Physics taken from the word Particle Physics.

[LordShield2012]

I come to believe that the Big Bang happens every time a Galaxy is born. That is why we find black holes in the center of every Galaxy.

These Black holes clean up the mater and and keep its cycle going by cleaning and maintaining its area kind of like the way are body cleans it self out after taken in all energy it needs.

This Theory or type of, i cant find any where on the internet. This needs to be addressed cause i really think there is a lot of things that are being over looked.