On the relativistic Thomas-Fermi model |
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Authors: | John Ferreirinho Remo Ruffini Luigi Stella |
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Institution: | Physics Department, University of Western Australia, Nedlands, 6009, Australia;Istituto di Fisica G. Marconi, Università di Roma, Rome, Italy |
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Abstract: | The relativistic generalization of the Thomas-Fermi model of the atom is derived. It approaches the usual nonrelativistic equation in the limit Z ? Zcrit, where Z is the total number of electrons of the atom and and α is the fine structure constant. The new equation leads to the breakdown of scaling laws and to the appearance of a critical charge, purely as a consequence of relativistic effects. These results are compared and contrasted with those corresponding to N self-gravitating degenerate relativistic fermions, which for give rise to the concept of a critical mass against gravitational collapse. Here m is the mass of the fermion and is the Planck mass. |
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