.comment-link {margin-left:.6em;}

2Physics Quote:
"Today’s most precise time measurements are performed with optical atomic clocks, which achieve a precision of about 10-18, corresponding to 1 second uncertainty in more than 15 billion years, a time span which is longer than the age of the universe... Despite such stunning precision, these clocks could be outperformed by a different type of clock, the so called “nuclear clock”... The expected factor of improvement in precision of such a new type of clock has been estimated to be up to 100, in this way pushing the ability of time measurement to the next level."
-- Lars von der Wense, Benedict Seiferle, Mustapha Laatiaoui, Jürgen B. Neumayr, Hans-Jörg Maier, Hans-Friedrich Wirth, Christoph Mokry, Jörg Runke, Klaus Eberhardt, Christoph E. Düllmann, Norbert G. Trautmann, Peter G. Thirolf
(Read Full Article: "Direct Detection of the 229Th Nuclear Clock Transition"

Thursday, March 22, 2007

Quantum Theory : 5 Needed Breakthroughs
-- Stephen Adler

Stephen Adler with grandchild in 2004 (photo courtesy: Institute for Advanced Study, Princeton)

[Prof. Stephen Adler of the School of Natural Sciences at the Institute of Advanced Study, Princeton is a widely respected authority in the field of Quantum Theory.

During the long career starting with Ph.D work in 1964 from Princeton University, Prof. Adler
continued to make important contribution in the field of Elementary Particles, Quantum Field Theory and Foundation of Quantum Physics.
His recent works can be best described by citing the following classic books that he wrote on his various research projects:

-- ``Adventures in Theoretical Physics: Selected Papers with Commentaries '' (World Scientific Publishing, January, 2006)
-- ``Quantum Theory as an Emergent Phenomenon'' (Cambridge University Press, 2004).
-- ``Quaternionic Quantum Mechanics and Quantum Fields'' (Oxford University Press, 1995).

During his long career, he held many important positions. He was Divisional Associate Editor for Particles and Fields of Physical Review Letters and also the Chairman of the Division of Particles and Fields of American Physical Society. He was a member of the Editorial Board of Physical Review D and Journal of Mathematical Physics. He is a member of the 'National Academy of Sciences' and Fellow of 'American Physical Society', 'American Academy of Arts and Sciences' and 'American Association for the Advancement of Science'.

Prof. Adler received J.J. Sakurai Prize from American Physical Society in 1988. In 1998 he was awarded the Dirac Medal of the Abdus Salam International Centre for Theoretical Physics, Trieste, Italy.

We thought it would be great to hear from Prof. Adler his choice of 5 most important breakthroughs that the Quantum Theory needs.
- 2Physics.com Team]

1. To understand why there are three families of quarks and leptons.

2. To understand the hierarchy problem - why the electroweak scale is so much smaller than the Planck scale.

3. To understand why the cosmological constant is so small.

4. To understand how to get a satisfactory quantum theory of measurement.

5. To reconcile relativistic quantum theory with general relativity.

Labels: , ,


Post a Comment

Links to this post:

Create a Link