有作用
发表于 2025-3-21 16:37:51
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magnate
发表于 2025-3-21 22:26:51
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Preamble
发表于 2025-3-22 01:58:36
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骑师
发表于 2025-3-22 04:40:54
Book 2010al extent also cannot be ignored. Historically the prominent examples were atoms, molecules, and nuclei. These should be seen in contrast to solid-state systems, where an in nite extent is usually a good approximation. Recently, new and different types of nite Fermi systems have become important, mo
Inflated
发表于 2025-3-22 08:45:52
,Hartree–Fock, (around 20–30 MeV) . Simple one-body models of that sort are ubiquitous in all areas of physics, see Chap. 3. They embody, however, a disquieting amount of arbitrariness as these shell-model potentials usually emerge from an educated guess.
TAG
发表于 2025-3-22 13:29:20
Excitation Spectra,tate. A particularly interesting feature is that individual perturbations couple to collective (harmonic oscillations) similarly to a set of coupled oscillators. This collective (small-amplitude) motion has been widely studied in self-bound fermion systems such as nuclei, metal clusters, quantum dots, or atomic traps.
流浪者
发表于 2025-3-22 17:31:36
The Variety of Finite Fermion Systems and Their Basic Properties,nded by a diffuse electron cloud. Nuclei themselves are built from interacting neutrons and protons, which are ultimately small compounds of quarks. Electrons, neutrons, protons, and quarks are fermions. Atoms themselves may also be fermions, if their total spin, built from those of electrons, neutr
排他
发表于 2025-3-22 21:54:28
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锯齿状
发表于 2025-3-23 03:06:28
Particles in an External Field,rrect volume properties, scaling, or level densities, but neglects crucial quantum effects, particularly quantum shell structure, related to the spatial confinement of a finite system. A rough confinement is given by an infinite potential barrier enclosing a flat potential region. More realistic pot
GLOOM
发表于 2025-3-23 07:08:46
,Hartree–Fock, the same time such systems display very simple properties if one looks at structure or low-energy excitations which can be described by one-body potentials and weak residual interactions; think, e.g., of atomic nuclei . The nuclear interaction combines strong attraction and a huge short