Brian Greene: The universe on a string

Brian Greene Professor Mathematics & Physics Columbia University Theoretical Physics - String Theory & Quantum Gravity URL: http://www.iscap.columbia.edu

Biography EDUCATION: Ph.D. 1987 Oxford University RESEARCH: My area of research is superstring theory, a theory that purports to give us a quantum theory of gravity as well as a unified theory of all forces and all matter. As such, superstring theory has the potential to realize Einstein's long sought dream of a single, all encompassing, theory of the universe. One of the strangest features of superstring theory is that it requires the universe to have more than three spatial dimensions. Much of my research has focused on the physical implications and mathematical properties of these extra dimensions --- studies that collectively go under the heading "quantum geometry". Quantum geometry differs in substantial ways from the classical geometry underlying general relativity. For instance, topology change (the "tearing" of space) is a sensible feature of quantum geometry even though, from a classical perspective, it involves singularities. As another example, two different classical spacetime geometries can give rise to identical physical implications, again at odds with conclusions based on classical general relativity. Superstring theory is most relevant under extreme physical conditions such as those that existed at the time of the big bang. Recently, we have formed a new institute at Columbia called ISCAP (Institute for Strings, Cosmology, and Astroparticle Physics) dedicated to understanding the interface of superstring theory and cosmology. One primary focus of ISCAP is the search for subtle signatures of string theory that may be imprinted in the precision cosmological data that will be collected through a variety of experiments over the next decade. SELECTED PUBLICATIONS: for a more complete listing of publications see SPIRES. Some selected publications are: "Universal Correction to the Inflationary Vacuum", B. R. Greene, M. Parikh, and J.P. van der Schaar, {To Appear.}  "An Effect of alpha' corrections on Racetrack Inflation", B. R. Greene and A. Weltman { JHEP 0603 (2006) 035.}  "Extracting New Physics from the CMB", B. R. Greene, K. Schalm, G. Shiu, J.P. van der Schaar, {Proceedings XXIII Texas Symposium on Relativistic Astrophysics.}  "Decoupling in an expanding Universe: Backreaction barely Constrains short distance effects on the CMB '', B. R. Greene, K. Schalm, G. Shiu, J.P. van der Schaar, { JCAP 0502 (2005) 001.}  "String Windings in the Early Universe", R. Easther, B. R. Greene, M. Jackson, D. Kabat, {JCAP 0502 (2005) 009.}  "Brane Gases in the Early Universe: Thermodynaics and Cosmology", R. Easther, B. R. Greene, M. Jackson, D. Kabat, {JCAP 0401 (2004) 006.}  "Brane Gas Cosmology in  M-Theory: Late Time Behavior", R. Easther, B. R. Greene, M. Jackson, D. Kabat, {Phys. Rev. D67 (2003) 123501.}  "On the Hagedorn Behaviour of PP-wave Strings and N=4 SYM Theory at Finite R-Charge Density", B. R Greene, K. Schalm, G. Shiu, {Nucl.Phys. B652 (2003) 105.} "A Generic Estimate of Trans-Planckian Modifications to the Primordial Power Spectrum in Inflation", R. Easther, B. Greene, W. Kinney, G. Shiu, Phys. Rev. D66 (2002) 023518. "Inflation as a Probe of Short Distance Physics", R. Easther, B. Greene, W. Kinney, G. Shiu, Phys. Rev. D64 (2001) 103502. "D-Brane Topology Changing Transitions", Brian R. Greene, Nucl. Phys. B525 (1998) 284-296. "Orbifold Resolution by D-Branes", Michael R. Douglas, Brian R. Greene, David R. Morrison, Nucl.Phys. B506 (1997) 84-106. "Black Hole Condensation and the Unification of String Vacua", Brian R. Greene, David R. Morrison, Andrew Strominger, Nucl.Phys. B451 (1995) 109-120. "Calabi-Yau Moduli Space, Mirror Manifolds and Spacetime Topology Change in String Theory", P.S. Aspinwall, B.R. Greene, D.R. Morrison, Nucl.Phys. B416 (1994) 414-480 "Duality in Calabi-Yau Moduli Space", B.R.Greene and M.R.Plesser, Nucl. Phys. B338 (1990) 15.

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Coast to Coast: Dr. Michio Kaku (Feb. 2011)

Dr. Michio Kaku is a theoretical physicist, best-selling author, and popularizer of science. He’s the co-founder of string field theory (a branch of string theory), and continues Einstein’s search to unite the four fundamental forces of nature into one unified theory.

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Amazingly beautiful UFO deploying drones

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Scientists model ancient bog woman's face

German researchers have shed light on life during the Iron Age after examining the ancient remains of a woman found in a bog in what is now Lower Saxony. The body dates back to the pre-Roman era, more than 2,600 years ago.

A team of experts presented their findings on Thursday in Hannover, including facial simulations of the bog woman dubbed “Moora.” Archaeologists first began studying the find six years ago, according to news magazine Der Spiegel.

Experts from the University Medical Center Hamburg-Eppendorf (UKE) generated a digital model of the bones, which was used to make a replica of the bog woman’s skull. Later, five researchers from Germany and the United Kingdom produced a series of facial reconstructions.

“It’s a look into the face of a young woman who lived at a time when Rome was still just a small village,” said Stefan Winghart, head of the regional heritage conservation office in Lower Saxony.

After examining Moora’s corpse, researchers estimated she was between 17- and 19-years-old at the time of her death. Her life was brief but gruelling: The team determined the young woman suffered from malnutrition, chronic inflammation, curvature of the spine – as well as a benign tumour at the base of her skull. The bones also point to a pair of skull fractures due to blunt trauma.

Experts said Moora probably lived a life of intense physical labour – and likely regularly carried heavy loads, such as water jugs, while roaming through the marshland.

When Moora’s remains were initially uncovered – including vertebrae, hair and pieces of the skull – the body was not treated as an archaeological find. Instead forensics experts in Hamburg identified the corpse as a 16- to 21-year-old woman with poor dental hygiene, Der Spiegel said. Until a DNA test proved otherwise, the corpse was suspected to be the body of the young woman Elke Kerll, who disappeared in 1969 after going to a dance club.

Yet after a human hand was uncovered at the site five years after the initial find, archaeologists began to take a closer look. Radiocarbon dating completed at the University of Kiel confirmed the girl had died between 764 and 515 B.C.

Despite researchers’ efforts to learn more about Moora’s life, the circumstances of her death remain a mystery. The team determined the young woman was naked at the time of her death – and the absence of any clothing or jewellery at the site seems to suggest the young woman did not suffer a fatal accident. But the find also contradicts historical knowledge of common burial practices during the Iron Age, as most bodies were cremated.
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The Art of Close Encounters by Kim Carlsberg

For those who want to get a glimpse into the world of extra terrestrial contact, this book surely provides one of the best illustrations to date. It is filled with numerous drawings from contactees living all over the globe. It is helpful to those people who are learning about extra terrestrials. As the reader will see the different beings are as diverse as the life forms that exists on our own very planet Earth.

THE JERRY PIPPIN SHOW - Kim Carlsberg (1-12-2011)

Many contactees have spent numerous years in silence regarding their contact and the amazing places they have seen, the different dimensions they have walked in and the incredible teachings they have been students to. This art work is a way to express the extensive messages that exist in these encounters for public viewing.

Our controlled media has thrown images at us for years regarding what we as humans should look like, what we should idolize and how we should behave. This blogger can't help but think that for most Americans watching American Idol, Survivor and popular culture shows this is sure to be a massive switch in their psyche if they so choose to enter in. The world that truly exists right beyond our window and outside our door is far more interesting and teeming with life encompassing infinite possibilities. This book shows you what is, what can be and what is beyond.

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Google Art Project

Explore museums from around the world, discover and view hundreds of artworks at incredible zoom levels, and even create and share your own collection of masterpieces.
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UFO - Dome of the rock - Temple mount - Jerusalem 28.01.2011

This morning around 01:00 AM at the promenade of Armon Hantziv in Jerusalm, i was witness(with another guy), an amazing ufo aircraft over Jerusalem old city (mount Moriah) Dome of the Rock,Temple Mount,قبة الصخرة, הר הבית.
What is the meaning of this sighting ?????????
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