Observations on Hyperplane: II. Dynamical Variables and
... time? I took the purpose of the question to be that of undermining the notion that we need HD observables at all. For strictly speaking, the answer to the question is yes. But I asked my questioner if he agreed that his question was analogous to asking, within non-relativistic quantum theory, anothe ...
... time? I took the purpose of the question to be that of undermining the notion that we need HD observables at all. For strictly speaking, the answer to the question is yes. But I asked my questioner if he agreed that his question was analogous to asking, within non-relativistic quantum theory, anothe ...
Quantum HPC Sweden
... We propose an adiabatic quantum algorithm for generating a quantum pure state encoding of the PageRank vector, the most widely used tool in ranking the relative importance of internet pages. We present extensive numerical simulations which provide evidence that this algorithm can prepare the quantum ...
... We propose an adiabatic quantum algorithm for generating a quantum pure state encoding of the PageRank vector, the most widely used tool in ranking the relative importance of internet pages. We present extensive numerical simulations which provide evidence that this algorithm can prepare the quantum ...
Theoretical examination of quantum coherence in a photosynthetic
... temperatures is fragile compared to that at cryogenic temperatures because amplitude of environmental fluctuations increases with increasing temperature. Hence, the robustness and roles of quantum coherence under physiological conditions are to a large extent unknown. In order to explore these quest ...
... temperatures is fragile compared to that at cryogenic temperatures because amplitude of environmental fluctuations increases with increasing temperature. Hence, the robustness and roles of quantum coherence under physiological conditions are to a large extent unknown. In order to explore these quest ...
The theory of the ‘0.7 anomaly’ in quantum point contacts
... incorporate such a solution within SDFT, we allow solutions of the Kohn–Sham equation [8] which break spin symmetry. Indeed the lowest energy solution, as the QPC opens up, is a spin-polarized state (though the spin direction is arbitrary)— as the effective QPC barrier is lowered the two semi-infini ...
... incorporate such a solution within SDFT, we allow solutions of the Kohn–Sham equation [8] which break spin symmetry. Indeed the lowest energy solution, as the QPC opens up, is a spin-polarized state (though the spin direction is arbitrary)— as the effective QPC barrier is lowered the two semi-infini ...
QUANTUM ESTIMATION FOR QUANTUM TECHNOLOGY 1
... optimal measurements and to evaluate lower bounds on precision for the estimation of parameters imposed by unitary transformations. For bosonic systems these include single-mode phase,8,9 displacement,10 squeezing 11,12 as well as two-mode transformations, e.g. bilinear coupling.13 Local QET has bee ...
... optimal measurements and to evaluate lower bounds on precision for the estimation of parameters imposed by unitary transformations. For bosonic systems these include single-mode phase,8,9 displacement,10 squeezing 11,12 as well as two-mode transformations, e.g. bilinear coupling.13 Local QET has bee ...
phase stability - CERN Accelerator School
... From Synchrotron to Linac In the linac there is no bending magnets, hence there is no dispersion effects on the orbit and α=0. Provided the cavities are periodically spaced to fulfill the synchronism condition, the longitudinal dynamics treatment remains valid and one ends up with a phase oscillati ...
... From Synchrotron to Linac In the linac there is no bending magnets, hence there is no dispersion effects on the orbit and α=0. Provided the cavities are periodically spaced to fulfill the synchronism condition, the longitudinal dynamics treatment remains valid and one ends up with a phase oscillati ...
Physics - Hal-SHS
... according to «measure». «Order and measure», Descartes said, but «measure» had in his expression the old meaning of being subject to proportions, and not that of «measurement», as «measure» would be generally understood afterwards, corresponding with more or less direct experiment. This further acce ...
... according to «measure». «Order and measure», Descartes said, but «measure» had in his expression the old meaning of being subject to proportions, and not that of «measurement», as «measure» would be generally understood afterwards, corresponding with more or less direct experiment. This further acce ...
Exicted Baryons in Large Nc QCD:
... world is a bit perverse: they are “(Nc+2)quarks” which is an odd locution. – I will call them “pentaquarks” ...
... world is a bit perverse: they are “(Nc+2)quarks” which is an odd locution. – I will call them “pentaquarks” ...
Module Guide
... The course develops a two-strand approach to Quantum Computing, with an underlying mathematical strand delivered by the School of Computer Science and a quantum information processing strand delivered by both the School of Physics, Astronomy and Mathematics and the School of Computer Science. Commen ...
... The course develops a two-strand approach to Quantum Computing, with an underlying mathematical strand delivered by the School of Computer Science and a quantum information processing strand delivered by both the School of Physics, Astronomy and Mathematics and the School of Computer Science. Commen ...
Energy cascade and the four-fifths law in superfluid turbulence
... The main goal of this paper is to test in a superfluid the 4/5-law which characterizes the energy cascade. To account for the departure from the ideal 4/5-law at small scale, the classical Kármán-Howarth equation is assessed. As a side result, we show that the superfluid inherits vis- ...
... The main goal of this paper is to test in a superfluid the 4/5-law which characterizes the energy cascade. To account for the departure from the ideal 4/5-law at small scale, the classical Kármán-Howarth equation is assessed. As a side result, we show that the superfluid inherits vis- ...
RTF format - Huw Price
... It seems to be assumed that the kind of asymmetry exemplified by photons and polarisers can be accommodated within this general picture, but I want to show that this is not so. If there is an asymmetry in microphysics of this kind, it cannot be accorded the status of a (locally) factlike product of ...
... It seems to be assumed that the kind of asymmetry exemplified by photons and polarisers can be accommodated within this general picture, but I want to show that this is not so. If there is an asymmetry in microphysics of this kind, it cannot be accorded the status of a (locally) factlike product of ...
Electronic structure of rectangular quantum dots
... show that in comparison with the variational quantum Monte Carlo 共VMC兲 calculations, the new parametrization by Attaccalite et al. gives more accurate results for the exchange correlation than the forms of Tanatar and Ceperley. We perform the numerical calculations in real space with two-dimensional ...
... show that in comparison with the variational quantum Monte Carlo 共VMC兲 calculations, the new parametrization by Attaccalite et al. gives more accurate results for the exchange correlation than the forms of Tanatar and Ceperley. We perform the numerical calculations in real space with two-dimensional ...
Renormalization group
In theoretical physics, the renormalization group (RG) refers to a mathematical apparatus that allows systematic investigation of the changes of a physical system as viewed at different distance scales. In particle physics, it reflects the changes in the underlying force laws (codified in a quantum field theory) as the energy scale at which physical processes occur varies, energy/momentum and resolution distance scales being effectively conjugate under the uncertainty principle (cf. Compton wavelength).A change in scale is called a ""scale transformation"". The renormalization group is intimately related to ""scale invariance"" and ""conformal invariance"", symmetries in which a system appears the same at all scales (so-called self-similarity). (However, note that scale transformations are included in conformal transformations, in general: the latter including additional symmetry generators associated with special conformal transformations.)As the scale varies, it is as if one is changing the magnifying power of a notional microscope viewing the system. In so-called renormalizable theories, the system at one scale will generally be seen to consist of self-similar copies of itself when viewed at a smaller scale, with different parameters describing the components of the system. The components, or fundamental variables, may relate to atoms, elementary particles, atomic spins, etc. The parameters of the theory typically describe the interactions of the components. These may be variable ""couplings"" which measure the strength of various forces, or mass parameters themselves. The components themselves may appear to be composed of more of the self-same components as one goes to shorter distances.For example, in quantum electrodynamics (QED), an electron appears to be composed of electrons, positrons (anti-electrons) and photons, as one views it at higher resolution, at very short distances. The electron at such short distances has a slightly different electric charge than does the ""dressed electron"" seen at large distances, and this change, or ""running,"" in the value of the electric charge is determined by the renormalization group equation.