“Thomas–Fermi theory”的概念、定义、翻译、参考文献-科学参考

Thomas–Fermi theory

Physics

A statistical method for calculating the electronic structure of atoms; it was devised independently by Llewellyn Hilleth Thomas (1903–92) and Enrico Fermi in 1927. As the main quantity of interest in Thomas–Fermi theory is the electron density, the theory can be regarded as a precursor of density functional theory. The theory is exact in the limit of infinite atomic number. It is not very accurate quantitatively but is useful for calculating qualitative trends for electrons in atoms.

Chemistry

A statistical method for calculating the electronic structure of atoms. This method was devised independentlyÂ by Llewellyn Hilleth Thomas (1903–92) and Enrico Fermi (1901–54) in 1927. As the main quantity of interest in Thomas–Fermi theory is the electron density, it can be regarded as a precursor of density-functional theory. Thomas–Fermi theory is exact in the limit of infinite atomic number. Although it is not very accurate quantitively and cannot describe chemical bonding it is useful for calculating qualitative trends for electrons in atoms. There are systematic extensions of Thomas–Fermi theory that remove some of its quantitative deficiencies.

单词	Thomas–Fermi theory
释义	Thomas–Fermi theory Physics A statistical method for calculating the electronic structure of atoms; it was devised independently by Llewellyn Hilleth Thomas (1903–92) and Enrico Fermi in 1927. As the main quantity of interest in Thomas–Fermi theory is the electron density, the theory can be regarded as a precursor of density functional theory. The theory is exact in the limit of infinite atomic number. It is not very accurate quantitatively but is useful for calculating qualitative trends for electrons in atoms. Chemistry A statistical method for calculating the electronic structure of atoms. This method was devised independentlyÂ by Llewellyn Hilleth Thomas (1903–92) and Enrico Fermi (1901–54) in 1927. As the main quantity of interest in Thomas–Fermi theory is the electron density, it can be regarded as a precursor of density-functional theory. Thomas–Fermi theory is exact in the limit of infinite atomic number. Although it is not very accurate quantitively and cannot describe chemical bonding it is useful for calculating qualitative trends for electrons in atoms. There are systematic extensions of Thomas–Fermi theory that remove some of its quantitative deficiencies.
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