Quantum networks in the presence of D B
... tuned by external gate voltages. This has been demonstrated experimentally by measuring Shubnikov–de Haas oscillations in two-dimensional electron gas (2DEG) [17–19]. In the recent letter [20], we have shown that it is possible to obtain a localization of the electron wave function by means of the R ...
... tuned by external gate voltages. This has been demonstrated experimentally by measuring Shubnikov–de Haas oscillations in two-dimensional electron gas (2DEG) [17–19]. In the recent letter [20], we have shown that it is possible to obtain a localization of the electron wave function by means of the R ...
Can Renormalization Change the Observable Predictions of Inflation? Gonzalo J. Olmo
... Little attention has been paid to these divergences: ◆ Sometimes this is bypassed by regarding h(~x,t) as a classical random field and introducing a window function to remove the Fourier modes with large k. But QFT is much more than Quantum Mechanics. ...
... Little attention has been paid to these divergences: ◆ Sometimes this is bypassed by regarding h(~x,t) as a classical random field and introducing a window function to remove the Fourier modes with large k. But QFT is much more than Quantum Mechanics. ...
Unlocking the Lagrangian.
... By the same token, as soon as the Lagrangian was discovered to work in quantum mechanics, the physicists should have known that QM and QED were not E/M only. The non-zero Lagrangian is telling us very clearly that we have two fields. Just as gravitational potential cannot resist gravitational kinet ...
... By the same token, as soon as the Lagrangian was discovered to work in quantum mechanics, the physicists should have known that QM and QED were not E/M only. The non-zero Lagrangian is telling us very clearly that we have two fields. Just as gravitational potential cannot resist gravitational kinet ...
ptt-file - Parmenides Foundation
... • The canvas of local space-time constitutes only together with factization. It is thus not applicable to the status “ante”. • Relativity doesn’t allow for a “now” that would be mandatory for the entire universe. Quantum physics, instead, requires a strong notion of the present – as genuine novelty ...
... • The canvas of local space-time constitutes only together with factization. It is thus not applicable to the status “ante”. • Relativity doesn’t allow for a “now” that would be mandatory for the entire universe. Quantum physics, instead, requires a strong notion of the present – as genuine novelty ...
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.