Berry Curvature as a Multi-Band Effect in Boltzmann Equations
... equation. Such equations have been considered before in the chase of superconductors [10] and in the case of semi-conductors by Haug and Jauho [27]. Since we are mainly interested in the electric properties at half filling, we can avoid some of the difficulties by projecting on to the bands, however ...
... equation. Such equations have been considered before in the chase of superconductors [10] and in the case of semi-conductors by Haug and Jauho [27]. Since we are mainly interested in the electric properties at half filling, we can avoid some of the difficulties by projecting on to the bands, however ...
Closed-orbit theory for photodetachment in a time-dependent electric field Robicheaux
... based on several simple reasons as introduced above. Most importantly, this system has almost all the essential elements expected for the other general cases, which can be seen clearly in the following sections. In addition, a numerical solution of Schrödinger’s equation is also possible as long as ...
... based on several simple reasons as introduced above. Most importantly, this system has almost all the essential elements expected for the other general cases, which can be seen clearly in the following sections. In addition, a numerical solution of Schrödinger’s equation is also possible as long as ...
Uncertainty relation between angle and orbital angular momentum
... which are generalizations to higher moments of angular distribution µn = hZˆ n i/ h(Zˆ † Z) We proved also the tightest inequality (36). A theoretical generalization to the uncertainty relation (37) between a symmetry generator and an order parameter was shown. Methods for controlling angular moment ...
... which are generalizations to higher moments of angular distribution µn = hZˆ n i/ h(Zˆ † Z) We proved also the tightest inequality (36). A theoretical generalization to the uncertainty relation (37) between a symmetry generator and an order parameter was shown. Methods for controlling angular moment ...
... In the last decade, the interest of researchers on non-selfadjoint operators having real eigenvalues has developed in different aspects (we refer the readers to [1–16] and references therein). In this paper, a non-self-adjoint bosonic Hamiltonian H acting on an infinite dimensional Hilbert space and ...
Quantum annealing with manufactured spins
... wide variety of different spin networks, each of which can be monitored as it moves towards a low-energy configuration13,14. This programmable artificial spin network bridges the gap between the theoretical study of ideal isolated spin networks and the experimental investigation of bulk magnetic sam ...
... wide variety of different spin networks, each of which can be monitored as it moves towards a low-energy configuration13,14. This programmable artificial spin network bridges the gap between the theoretical study of ideal isolated spin networks and the experimental investigation of bulk magnetic sam ...
Complexity Science as Order-creation Science
... and B, only if the link is “conditioned” by a third entity, C (Ashby, 1962: 255). If C symbolizes the “environment,” which is external to the connection between A and B, environmental constraints are what cause order (Ashby, 1956). This results in his “law of requisite variety” (Ashby, 1956): For a ...
... and B, only if the link is “conditioned” by a third entity, C (Ashby, 1962: 255). If C symbolizes the “environment,” which is external to the connection between A and B, environmental constraints are what cause order (Ashby, 1956). This results in his “law of requisite variety” (Ashby, 1956): For a ...
Propensities in Quantum Mechanics - Philsci
... By contrast Margenau proposed a “third-way” interpretation of quantum mechanics that treads an intermediate course, whereby the probabilities are given an objective reading, and they are understood as describing tendencies – more precisely: the tendencies of latent observables to take on different v ...
... By contrast Margenau proposed a “third-way” interpretation of quantum mechanics that treads an intermediate course, whereby the probabilities are given an objective reading, and they are understood as describing tendencies – more precisely: the tendencies of latent observables to take on different v ...
Bell-like inequalities from symmetrized products of noncommuting
... their noncommutativity, and cannot be measured simultaneously, despite theoretical attempts at such a definition27,28 . Thus the question of a joint probability function does not arise operationally in quantum theory. However, if we attempt to describe the correlations in terms of hidden variables, ...
... their noncommutativity, and cannot be measured simultaneously, despite theoretical attempts at such a definition27,28 . Thus the question of a joint probability function does not arise operationally in quantum theory. However, if we attempt to describe the correlations in terms of hidden variables, ...
Phys. Rev. Lett. 98, 070602
... such phases have not, thus far, been seen experimentally outside of the quantum Hall regime. Is this because topological phases are very rare and these models are adiabatically connected only to very small regions of the phase diagrams of real experimental systems? In this Letter, we take a first st ...
... such phases have not, thus far, been seen experimentally outside of the quantum Hall regime. Is this because topological phases are very rare and these models are adiabatically connected only to very small regions of the phase diagrams of real experimental systems? In this Letter, we take a first st ...
An Introduction to Applied Quantum Mechanics in the Wigner Monte
... The necessity of a quantum theory was raised by a series of experimental observations in the realm of extremely small objects such as electrons and other elementary particles, atoms and molecules, which could not be explained in classical terms at all. Concepts such as particle-wave duality and ener ...
... The necessity of a quantum theory was raised by a series of experimental observations in the realm of extremely small objects such as electrons and other elementary particles, atoms and molecules, which could not be explained in classical terms at all. Concepts such as particle-wave duality and ener ...
Momentum-resolved tunneling into fractional
... Here k V ⫽ 冑2m( F储 ⫺eV)/ប 2 and k F储 , the Fermi wave vector in 2DES储 , are the extremal wave vectors for which momentum-resolved tunneling occurs. Fermi energies in 2DES⬜, 储 are denoted by F⬜, 储 . Equations 共6兲 can be used to extract the lowest-Landau-level dispersion E 0k from maxima in the exp ...
... Here k V ⫽ 冑2m( F储 ⫺eV)/ប 2 and k F储 , the Fermi wave vector in 2DES储 , are the extremal wave vectors for which momentum-resolved tunneling occurs. Fermi energies in 2DES⬜, 储 are denoted by F⬜, 储 . Equations 共6兲 can be used to extract the lowest-Landau-level dispersion E 0k from maxima in the exp ...
Paper
... 26 m (in the object plane), and this bin size was used in the data analysis. We observe the same suppression ratios for bin sizes as large as 40 m, corresponding to more than 10 000 atoms per bin. For a cold fermion cloud, the zero temperature structure factor SðqÞ becomes unity for q > 2qF . This ...
... 26 m (in the object plane), and this bin size was used in the data analysis. We observe the same suppression ratios for bin sizes as large as 40 m, corresponding to more than 10 000 atoms per bin. For a cold fermion cloud, the zero temperature structure factor SðqÞ becomes unity for q > 2qF . This ...
Polarization, reactivity and quantum molecular capacitance: From
... In the Born-Oppenheimer approximation, a chemical reaction between two molecules can be described as the variation of the electronic density of the ensemble of the two interacting molecules due to the motions of their nuclei. This electronic density variation is an internal charge reorganization (po ...
... In the Born-Oppenheimer approximation, a chemical reaction between two molecules can be described as the variation of the electronic density of the ensemble of the two interacting molecules due to the motions of their nuclei. This electronic density variation is an internal charge reorganization (po ...
Entering Junior Honours Physics & Astronomy and Joint Degrees -2016
... can explore aspects of physics and develop relevant laboratory and experimental research skills. In recent years several physics students have been in the top few in the UK or internationally in various “Physics Student of the Year” competitions, based primarily on the work in their final year proj ...
... can explore aspects of physics and develop relevant laboratory and experimental research skills. In recent years several physics students have been in the top few in the UK or internationally in various “Physics Student of the Year” competitions, based primarily on the work in their final year proj ...
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.