The fractional quantum Hall effect in wide quantum wells
... 5/2-state is usually studied in heterostructures with a single heterointerface or relatively narrow quantum wells where electrons occupy only the first subband. By widening the quantum well the physics is enriched, since it is possible to populate the second subband of the quantum well as well. This ...
... 5/2-state is usually studied in heterostructures with a single heterointerface or relatively narrow quantum wells where electrons occupy only the first subband. By widening the quantum well the physics is enriched, since it is possible to populate the second subband of the quantum well as well. This ...
The potential quark model in theory of resonances
... • The complex energy is an appropriate tool in the studying of resonances. • A resonance is supposed to take place at E and to have “half–value breath” Г/2 [2]. • The imaginary part Г was associated with the inverse of the lifetime Г = 1/τ. • Such ‘decaying states’ were the first application of quant ...
... • The complex energy is an appropriate tool in the studying of resonances. • A resonance is supposed to take place at E and to have “half–value breath” Г/2 [2]. • The imaginary part Г was associated with the inverse of the lifetime Г = 1/τ. • Such ‘decaying states’ were the first application of quant ...
Efficient and robust analysis of complex scattering data under noise... microwave resonators S. Probst, F. B. Song,
... The transverse single-spin asymmetry (TSSA) AN has been studied since the mid-1970s. Large effects first measured in polarized lambda production at FermiLab [1] proved difficult to describe in perturbative QCD [2]. In the 1980s it was shown that quark-gluon-quark correlations in the nucleon could le ...
... The transverse single-spin asymmetry (TSSA) AN has been studied since the mid-1970s. Large effects first measured in polarized lambda production at FermiLab [1] proved difficult to describe in perturbative QCD [2]. In the 1980s it was shown that quark-gluon-quark correlations in the nucleon could le ...
Lecture 27 Line integrals: Integration along curves in R
... Now let us consider a more general case: A force, F(r), which is not necessarily constant in space, is acting on a mass m, as the mass moves along a curve C from point P to point Q as shown in the diagram below. z ...
... Now let us consider a more general case: A force, F(r), which is not necessarily constant in space, is acting on a mass m, as the mass moves along a curve C from point P to point Q as shown in the diagram below. z ...
Transport Theory
... σ= m (all symbols have usual meanings) All is, however, not well with Drudé theory! VBS ...
... σ= m (all symbols have usual meanings) All is, however, not well with Drudé theory! VBS ...
a revised electromagnetic theory with fundamental applications
... Maxwell’s equations in the vacuum state have served as a guideline and basis in the development of quantum electrodynamics (QED). As pointed out by Feynman, however, there are important areas within which conventional electromagnetic theory and its combination with quantum mechanics does not provide ...
... Maxwell’s equations in the vacuum state have served as a guideline and basis in the development of quantum electrodynamics (QED). As pointed out by Feynman, however, there are important areas within which conventional electromagnetic theory and its combination with quantum mechanics does not provide ...
... Standing in stark contrast to these physical requirements are the conditions that exist in and around animal brains. Brains are warm, wet, biological constructs, honed by evolution to exhibit the sort of robustness and durability needed for survival in the world. Although to some extent they are pro ...
Renormalization
In quantum field theory, the statistical mechanics of fields, and the theory of self-similar geometric structures, renormalization is any of a collection of techniques used to treat infinities arising in calculated quantities.Renormalization specifies relationships between parameters in the theory when the parameters describing large distance scales differ from the parameters describing small distances. Physically, the pileup of contributions from an infinity of scales involved in a problem may then result in infinities. When describing space and time as a continuum, certain statistical and quantum mechanical constructions are ill defined. To define them, this continuum limit, the removal of the ""construction scaffolding"" of lattices at various scales, has to be taken carefully, as detailed below.Renormalization was first developed in quantum electrodynamics (QED) to make sense of infinite integrals in perturbation theory. Initially viewed as a suspect provisional procedure even by some of its originators, renormalization eventually was embraced as an important and self-consistent actual mechanism of scale physics in several fields of physics and mathematics. Today, the point of view has shifted: on the basis of the breakthrough renormalization group insights of Kenneth Wilson, the focus is on variation of physical quantities across contiguous scales, while distant scales are related to each other through ""effective"" descriptions. All scales are linked in a broadly systematic way, and the actual physics pertinent to each is extracted with the suitable specific computational techniques appropriate for each.