Akinori Igarashi1 and C. D. Lin2 1Department of Applied Physics, Faculty of Engineering, Miyazaki University, Miyazaki, 889-2192, Japan 2Department of Physics, Cardwell Hall, Kansas State University, Manhattan, Kansas 66506 (Received 18 May 1999) Cross sections for the nonresonant charge transfer process D 1 H 1s ! D 1s 1 H at low energies are calculated in hyperspherical coordinates. The metho...

Although the concept of a potential energy curve (PEC) originates from the outgrowth of the Born-Oppenheimer (BO) approximation, we propose the application of analysis methods for the physical PEC with non-Born-Oppenheimer (non-BO) wave functions. A numerical examination was performed with the highly accurate non-BO vibronic wave functions of hydrogen molecular ion, which were obtained in our p...

Following is the text of a letter, dated December 23, 1953, from Major General K. D. Nichols, general manager Atomic Energy Commission, to Dr. J. Robert Oppenheimer.

Time-reversible ab initio molecular dynamics based on a lossless multichannel decomposition for the integration of the electronic degrees of freedom [Phys. Rev. Lett. 97, 123001 (2006)] is explored. The authors present a lossless time-reversible density matrix molecular dynamics scheme. This approach often allows for stable Hartree-Fock simulations using only one single self-consistent field cy...

In earlier work we constructed a class of spherically symmetric, ̄uid dynamical shock waves that satisfy the Einstein equations of general relativity. These shock waves extend the celebrated Oppenheimer-Snyder result to the case of non-zero pressure. Our shock waves are determined by a system of ordinary di€erential equations that describe the matching of a FriedmannRobertson-Walker metric (a c...