Erratum: Lower spectral branches of a spin-boson model [J. Math. Phys. 49, 102105 (2008)] N. Angelescu, R. A. Minlos, J. Ruiz, and V. A. Zagrebnov Abstract not available. [J. Math. Phys. 50, 129901 (2009)] published Tue Dec 15, 2009. Curved manifolds with conserved RungeLenz vectors J.-P. Ngome van Holten's algorithm is used to construct RungeLenz-type conserved quantities, induced by Killing tensors, on curved manifolds. For the generalized Taub-NewmanUnti-Tamburino metric, the most general external potential such that the combined system admits a conserved RungeLenz-type vector is found. ... [J. Math. Phys. 50, 122901 (2009)] published Tue Dec 15, 2009. A mathematical theory of stochastic microlensing. II. Random images, shear, and the KacRice formula A. O. Petters, B. Rider, and A. M. Teguia Continuing our development of a mathematical theory of stochastic microlensing, we study the random shear and expected number of random lensed images of different types. In particular, we characterize the first three leading terms in the asymptotic expression of the joint probability density functio ... [J. Math. Phys. 50, 122501 (2009)] published Tue Dec 15, 2009.
physicsworld.com: news
Slowed light breaks record Tue, 15 Dec 2009 15:29:36 -0000 Light stored for over a second in an ultracold cloud of sodium atoms NASA launches sky surveyor Mon, 14 Dec 2009 14:36:42 -0000 WISE will search for cool stars and study the structure of nearby galaxies Solar cell grabs hot electrons Mon, 14 Dec 2009 14:05:06 -0000 Ultrathin photovoltaic device extracts more energy per photon
Physics Today magazine
Lighting and astronomy Tue, 01 Dec 2009 08:00:00 -0500 The rapid growth of light pollution threatens the future of astronomical observation. Detailed modeling of how light from the ground propagates through the atmosphere suggests ways to limit the damage. Charles Sanders Peirce and the first absolute measurement standard Tue, 01 Dec 2009 08:00:00 -0500 In his brilliant but troubled life, Peirce was a pioneer in both metrology and philosophy. Stiff-string theory: Richard Feynman on piano tuning Tue, 01 Dec 2009 08:00:00 -0500 In a letter to his piano tuner, the great theoretical physicist talks about how the nonzero stiffness of piano strings affects tuning and conjectures that piano tuners may need to pay more attention to ear-created harmonics.
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