most citedDerivation of a four-spinor Dirac-like equation for the helium atom and an approximate ground state solution

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quant-ph2013★ 1 cited

Derivation of a four-spinor Dirac-like equation for the helium atom and an approximate ground state solution

Daniel L. Nascimento, Antonio L. A. Fonseca

We present a new analysis of the connection between the classical conservation theorems and the role played by the Dirac matrices in order to obtain a four spinor version of the Di…

quant-ph2013

Collective modes in free plasmas subjected to a radiation field

Bruno Vieira Ribeiro, Daniel Dourado de A. Santos, Marco A. Amato

In this study we report the effects of an external electromagnetic field on the collective properties of unmagnetized plasmas. The calculations are carried out in the semi-classica…