## Zur quantentheorie der Molekeln [Offprint from] Annalen der Physik 84, No. 20, 1927

Leipzig: Barth, 1927. 1st Edition. OFFPRINT. FIRST EDITION IN ORIGINAL WRAPS OF THE 1927 BORN & OPPENHEIMER APPROXIMATION, ONE OF THE MOST IMPORTANT & FUNDAMENTAL APPROXIMATIONS IN MOLECULAR QUANTUM MECHANICS. The Born-Oppenheimer approximation is a simplification that breaks the wavefunction of a molecule into its electronic and nuclear (vibrational, rotational) components. This allows the computation of the energy and the wavefunction of a molecule to be simplified. “Proposed in the early days of quantum mechanics… [it] is still indispensable in quantum chemistry” (Wikipedia).

One year after the publication of the Schrödinger equation, Max Born and J. Robert Oppenheimer “published a truly remarkable paper on molecular quantum mechanics… The paper is famous, and essentially everything that is known about the structure of molecular bound states relies on the approximation developed in it” (Gesztesy, Spectral Theory and Mathematical Physics, 204).

"In quantum chemistry, the computation of the energy and wavefunction of an average-size molecule is a formidable task that is alleviated by the Born-Oppenheimer (BO) approximation. For instance the benzene molecule consists of 12 nuclei and 42 electrons. The time independent Schroedinger equation, which must be solved to obtain the energy and molecular wavefunction of this molecule, is a partial differential eigenvalue equation in 162 variables the spatial coordinates of the electrons and the nuclei. The BO approximation makes it possible to compute the wavefunction in two less formidable, consecutive steps” (Wikipedia). Item #1030

CONDITION & DETAILS: Leipzig: Barth. Complete offprint in original wraps. Bears the stamp of Harvard’s Dunbar Laboratory on the rear. 8vo. (9 x 5.75). Bright and clean. Fine condition.

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Price:
$575.00
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