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In a paper entitled "Lorentz transformation of blackbody radiation" (Phys. Rev. E 88, 044101, 2013), G. W. Ford and Robert O'Connell have solved a problem which numerous authors have worked on over a time span exceeding a hundred years. This is the question of how temperature behaves under a Lorentz transformation. Both Einstein in 1907 and Planck in 1908 published results which disagreed with each other and both of which proved to be incorrect. The reason why the problem remained unsolved for so many years was the fact that no experimental evidence existed to provide a check on the huge variety of theoretical methods employed. By constrast, Ford and O'Connell employed the experimental results for the spectrum of the universal cosmic blackbody radiation measured by Earth observers who are in different reference frames because of their motion through the 2.7K radiation. Despite the fact that kT behaves like an energy, it turns out that T does not change in a Lorentz transformation. More news...


Mark Wilde's research on the Heisenberg uncertainty principle has been accepted for publication in Physical Review Letters. Wilde and coauthors have established a revision of the uncertainty principle which quantifies the fundamental trade-off between measurement accuracy error and uncontrollable disturbance that occurs in any measurement of a quantum system. They have used concepts from information theory in establishing this revision. More news...

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An article about LIGO in the July 16 Nature opens by talking about the work of graduate student Ryan DeRosa. Gaby González was featured in three additional recent articles. LIGO was also featured in the Baton Rouge Business Report.


Research News: Graduate student Alison Dreyfuss' work on the Hoyle State in 12C is featured in the most recent edition of The Pursuit, the College of Science's news magazine. The Hoyle State was originally proposed in 1954 by Fred Hoyle as an excited state of 12C as a key step in stellar nucleosynthesis. Dreyfuss, working with Kristina Launey, used a new nuclear structure model (the No-Core Symplectic Model) developed at LSU to provide the first detailed explanation of the physics responsible for the Hoyle State, published in Physics Letters B.


Thank you to the Bella Bowman Foundation for their generous contribution to the department's Medical Physics program!


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Welcome to the Department of Physics and Astronomy at LSU! The department is actively involved in research in astronomy and astrophysics, gravitation and relativity, nuclear and particle physics, medical physics, materials and condensed matter physics, atomic/molecular/optical physics, quantum optics and computing, and medical physics. More...

 

 

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Congratulations Physics Graduates! Summer 2014

B.S. Degrees
Nicholas T. Desselles

M.S. Degrees
Margaret O. Hernandez
Melissa A. Lamberto
Bart A. Morris
Benjamin D. Rusk

Ph.D. Degrees
Brajesh K. Gupt
Kebei Jiang
Rebecca A. Ringuette
Amir H. Shadkam