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Payvand Iran News ...
05/10/08 Bookmark and Share
"Colliding with Nature's Best-kept Secrets"

By David Rahni, New York 

 


Professor Nima Arkani-Hamed

Read the CNN report on the seminal contributions of Professor Nima Arkani-Hamed on the proof and characteristics of strings, these hypothesized, extremely minute string woollies (much smaller than electrons) that everything in the universe (multi-verses) is (are) made up of.

 

Born to Iranian parents in 1972, both physicists in Houston, and after he earned his degrees in Toronto as a Canadian and then at Berkeley, and with a detour via Stanford, Arkani-Hamed, the Professor of Fundamental Physics at Princeton's Institute for Advanced Studies, who was lured there from his Harvard's professorship, is a world renowned citizen with humility that the humanity is blessed with! He is acclaimed for his energy, passion, creativity regarding extra dimension energy physics..

 

If a fraction of Professor Nima Arkani-Hamed's novel theories are turned out to be confirmed by the forthcoming experimental work at the soon to be completed Large Hardon Collider in Switzerland this August, it would revolutionize our thinking paradigm about our very own essence, let alone the universe! The Nobel prize then is simply a miniscule token of recognition bestowed upon this quiet GIANT in his tender 30's!

 

And last but not least watch Nima's plenary and his introduction by his peers:

 

 

More on Nima Arkani-Hamed's research:
source: Nima Arkani-Hamed

 

Our current description of the basic interactions in nature, based on the standard model of particle physics and general relativity, is in spectacular agreement with all known experiments. However, it is almost certainly fundamentally incomplete. In addition to difficulties associated with strong quantum gravitational effects at the Planck length, sensible quantum-mechanical theory of gravity, two striking facts about nature clues suggest that we are missing a big part of the picture. The extreme weakness of gravity relative to the other forces, as well as the huge size and flatness of our observable universe, require absurdly delicate adjustments of the parameters of the theory. We expect that new physical principles will be revealed to address these puzzles - the "hierarchy problem" and the "cosmological constant problem." Fortunately, these mysteries are associated with length scales-the electroweak scale and the Hubble scale-which will be probed experimentally in the near future with particle accelerators and cosmological observations. Therefore theories which address these puzzles are likely to have experimental consequences that will be checked in the next few years.

Nima Arkani-Hamed's research in theoretical physics is driven by attempting to address these mysteries. Much of his work has centered around addressing the hierarchy problem. Together with Savas Dimopoulos and Gia Dvali, he suggested that the extreme weakness of gravity can be attributed to the existence of large extra dimensions of space, perhaps as large as 100 microns in size, with the scale of quantum gravity lowered to the electroweak scale. This opens up the possibility that quantum gravitational effects can be probed at accelerators and even in table-top experiments. In a different direction, together with Andy Cohen and Howard Georgi he has constructed models where (non-gravitational) extra dimensions are generated dynamically from purely four-dimensional models. This has also led to new approaches to the hierarchy problem. He has also investigated the possibility that gravity is modified at large distances and times in an effort to address various cosmological problems. Most recently, together with Dimopoulos, he has explored the possibility that the fine-tunings for the cosmological constant and hierarchy problems find a common explanation within a huge landscape of possible low-energy worlds that may exist in string theory, leading to a novel proposal for "split" supersymmetry at the large hadron collider.

 

... Payvand News - 05/10/08 ... --


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