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This profile was last updated on 5/31/13  and contains information from public web pages and contributions from the ZoomInfo community.

Dimitris Nanopoulos

Wrong Dimitris Nanopoulos?

Fellow and Chair of Theoretical P...

Local Address: Greece
Academy of Athens
 
Background

Employment History

Board Memberships and Affiliations

Education

  • Physics
    University of Athens
  • Ph.D. , High Energy Physics
    University of Sussex
75 Total References
Web References
» language learning
www.learning-mind.com, 31 May 2013 [cached]
These unbelievable ideas belong to the research team of Dimitris Nanopoulos, professor of physics at the University of Texas and member of the Academy of Athens. According to the Athens News Agency, Mr. Nanopoulos ...
Dimitris Nanopoulos . Born ...
famousgreeks.gofreeserve.com, 5 Sept 2011 [cached]
Dimitris Nanopoulos . Born in Athens in 1948, he completed his degree in Physics in 1971 from the University of Athens and his Ph.D. in 1973 from the University of Sussex, England. He has made several contributions to particle physics and cosmology working in string unified theories, fundamentals of quantum theory, astroparticle physics and quantum-inspired models of brain function.
Nanopoulos is fellow of the American Physical Society, fellow and chair of Theoretical Physics of Academy of Athens in Greece and Professor of Physics and holder of the Mitchell/Heep Chair in High Energy Physics at Texas A&M University, which he joined in 1989. He is author of more than 515 refereed articles, with an excess of 27000 citations, placing him as the fourth most cited High Energy Physicist of all time (in 2001).
Dimitri ...
www.icbrainengine.net [cached]
Dimitri Nanopoulos
Texas A&M University, USA
He is one of the most regularly cited researchers in the world, cited more than 35,800 times over across a number of separate branches of science. Dimitri Nanopoulos was born and raised in Athens. He studied Physics at the University of Athens and he graduated in 1971, continuing his studies at the University of Sussex in England, where he obtained his Ph.D. in 1973 in High Energy Physics. He has been a Research Fellow at the Center of European Nuclear Research (CERN) in Geneva, Switzerland and for many years has been a staff member and Research Fellow at the École Normale Supérieure, in Paris, France and at Harvard University, Cambridge, United States. In 1989, he was elected Professor at the Department of Physics, at the NASA-supported Texas A&M University, where since 1992 he has been a Distinguished Professor of Physics, and since 2002 holder of the Mitchell/Heep Chair in High Energy Physics he is also a distinguished HARC fellow at the Houston Advanced Research Center in Houston, Texas. In 1997 he was appointed regular member of the Academy of Athens. He has made several contributions to particle physics and cosmology, and works in string unified theories, fundamentals of quantum theory, astroparticle physics and quantum-inspired models of brain function.
You can find more details about Dimitri Nanopoulos here
Laura Lee News - Calculations Show The Speed Of Light Might Change
www.newdiscovery.org, 29 May 2001 [cached]
Dimitri Nanopoulos, who holds the rank of Distinguished Professor of Physics at Texas A&M University and heads the Houston Advanced Research Center's Group for Astroparticle Physics, established, along with other physicists, that the speed of light, instead of being the constant value of 186,282 miles per second, might change.
In 1905, Einstein established that light was the only object to have a constant speed in all reference frames.This idea was the cornerstone to his theory of relativity, and later to laws of physics.
"If the speed of light proves not to be constant any more, even by a very small changeable amount, laws of physics - the theory of relativity included - will have to undergo significant changes," says Nanopoulos.Nanopoulos, who chairs the Theoretical Physics Division of the Academy of Athens, is among the many physicists who are trying to establish the basis of quantum gravity, a theory that has been dreamed of by physicists since the 1920s.
While they were doing mathematical calculations, Nanopoulos and physicists Nikolaos Mavromatos of King's College in London and John Ellis of the European Center for Particle Physics (CERN) in Geneva, discovered a new expression for the speed of light, which depends on its frequency.
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"Through our calculations, we found that the speed of light is frequency-dependent," says Nanopoulos.
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The hypotheses put forward by Nanopoulos and his collaborators has been under experimental scrutiny, and the results obtained during the last few months are encouraging.
"One way to experimentally test our hypothesis is to consider galaxies or other objects in the sky that are very far from us," says Nanopoulos."Then we collect the photons (particles of light) simultaneously emitted by these sources, and we look at differences of arrival times in a detector on earth between photons of different frequencies.The photons of higher frequencies should come later."
The frequency-dependent expression of the speed of light depends on the gravitational constant, a quantity that is known since Newton established his law of gravitation.
By using the differences in photon arrival times of six astronomical sources, Nanopoulos and his collaborators estimated an upper bound of the value of the gravitational constant from the data, and compared their results with the expected value.
"We were amazed to see that if we use all these astronomical data, we find very reasonable values for the gravitational constant," says Nanopoulos.
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"The most energetic of these photons were expected to interact with other very low-energy photons from the infrared background radiation, which is a radiation present since the early universe," says Nanopoulos."When a very energetic photon interacts with a low-energy photon, they have just the right quantity of energy to create an electron-antielectron pair.But physicists at HEGRA did not see any of the expected electron-antielectron pairs, but did observe very energetic photons instead.
"By using the frequency-dependent expression of the speed of light, Kifune, Protheroe and Meyer found that the combined energy of each type of photon was not enough to create an electron-antielectron pair," adds Nanopoulos.
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If by looking at more energetic photons, HEGRA never detects the expected electron-antielectron pairs, this would provide further support of the new hypothesis put forward by Nanopoulos and his collaborators.
"This frequency-dependence of the speed of light changes drastically our view of the theory of relativity," Nanopoulos says."It is also the first time that we have a window of opportunity to study quantum gravity, and thus scientifically study the origin of the Universe.It is a fantastic thing that we can experimentally magnify such a tiny effect."
Nanopoulos says that if the frequency-dependence of the speed of light is further confirmed by other experiments, the theory of relativity would still be valid under certain circumstances.
"There is nothing wrong with Einstein's theory of relativity.If the energy of an object is much smaller than 1019 proton masses or if the distance between two objects is smaller than millions of light-years, Einstein's equations are still valid," he says.
Dimitris ...
www.thatsgreece.com, 4 Dec 2011 [cached]
Dimitris Nanopoulos ThatsGreece.gr - Dimitris Nanopoulos
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Home > Greece Abroad > Greeks & Philhellenes > Dimitris Nanopoulos
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Dimitris Nanopoulos
He was born in Athens on September 13, 1948. He studied Physics at the University of Athens and he graduated in 1971. He continued his studies at the University of Sussex in England, where he got his Ph.D. in 1973, in High Energy Physics. He has been a Research Fellow at the Center of European Nuclear Research (CERN) in Geneva, Switzerland and for many years he has been a staff member. He has also been a Research Fellow in Ecole Norrmale Superieure, in Paris, France and in Harvard University, Cambridge, USA. In 1989, he was elected professor at the Department of Physics, at Texas A&M University where since 1992 he is a Distinguished Professor of Physics and since 2002 he holds the Mitchell/Heep Chair in High Energy Physics endowed with an amount of $ 1 Million. He is also Head of the Astroparticle Physics Group in Houston Advanced Research Center (HARC), in Houston, Texas, USA, where he is in charge of a research department of the World Laboratory, which is based in Switzerland. In 1997 he was appointed regular member of the Academy of Athens.
He has made several contributions to particle physics and cosmology. He works in string unified theories, fundamentals of quantum theory, astroparticle physics and quantum-inspired models of brain function. e has written over 520 original papers, all published in peer-reviewed journals, with high impact factor, including 10 books. He has over 26,000 citations, placing him as the 4th most cited High Energy Physicist of all time according to the 2001 census. Since 1988 he is fellow of the American Physical Society and since 1992 a member of the Italian Physical Society. In 1996, he was awarded the Commander of the Order of Honour of the Greek State.
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