Modelling in FP7 NMP Programme
... At times, models cannot be transferred from one physical situation to another (say from energy conversion to spin‐dynamics). In such cases, research projects may want to increase the complexity of the model, by incorporating new physics and chemistry. This happens when complete new physics and che ...
... At times, models cannot be transferred from one physical situation to another (say from energy conversion to spin‐dynamics). In such cases, research projects may want to increase the complexity of the model, by incorporating new physics and chemistry. This happens when complete new physics and che ...
Floquet topological insulators Phys. Stat. Sol. Rap
... the authors of Ref. [24] demonstrated that the effective bands are reshuffled (by resonant absorption processes) in such a way that the effective Hamiltonian is characterized by inverted effective bands, as shown in Fig. 2. Therefore, the mechanism of band inversion, which is instrumental to the rea ...
... the authors of Ref. [24] demonstrated that the effective bands are reshuffled (by resonant absorption processes) in such a way that the effective Hamiltonian is characterized by inverted effective bands, as shown in Fig. 2. Therefore, the mechanism of band inversion, which is instrumental to the rea ...
1 Imaginary Time Path Integral
... Use of Imaginary Time Path Integrals Imaginary time path integrals are practically useful in problems in condensed matter physics and particle physics. Numerical techniques involving random numbers (so-called Monte Carlo methods) are available for evaluating high dimensional real integrals. A typica ...
... Use of Imaginary Time Path Integrals Imaginary time path integrals are practically useful in problems in condensed matter physics and particle physics. Numerical techniques involving random numbers (so-called Monte Carlo methods) are available for evaluating high dimensional real integrals. A typica ...
Path Resummations and the Fermion Sign Problem
... “graphs”, rather than “paths”. The latter, being rooted in Feynman’s “realspace imaginary-time” path-integral (PI) theory [2–4], has been the paradigmatic approach to simulating quantum systems at finite temperature. For Fermion systems, however, there persists the infamous sign problem [5]. In the p ...
... “graphs”, rather than “paths”. The latter, being rooted in Feynman’s “realspace imaginary-time” path-integral (PI) theory [2–4], has been the paradigmatic approach to simulating quantum systems at finite temperature. For Fermion systems, however, there persists the infamous sign problem [5]. In the p ...
Experiments and theory in cold and ultracold collisions
... itself. As a general orientation Fig. 1 shows how a typical atomic de Broglie wavelength varies with temperature and where various physical phenomena situate along the scale. With de Broglie wavelengths on the order of a few thousandths of a nanometer, conventional gas-phase chemistry can usually be ...
... itself. As a general orientation Fig. 1 shows how a typical atomic de Broglie wavelength varies with temperature and where various physical phenomena situate along the scale. With de Broglie wavelengths on the order of a few thousandths of a nanometer, conventional gas-phase chemistry can usually be ...
Quasiclassical and semiclassical calculations on reactions with oriented molecules cos β
... initio long range potential, which contains all ve asymptotically degenerate adiabatic potential energy surfaces. The construction of this potential is also reported in Chapter 3. In Chapter 4 the Ca + CH3 F reaction is reinvestigated using a semiclassical method, in which the electronic state of t ...
... initio long range potential, which contains all ve asymptotically degenerate adiabatic potential energy surfaces. The construction of this potential is also reported in Chapter 3. In Chapter 4 the Ca + CH3 F reaction is reinvestigated using a semiclassical method, in which the electronic state of t ...
Molecular modelling of transition metal complexes with QM/MM
... of theoretical tools specially suited for the study of transition metal systems. Early theoretical studies on transition metal complexes were mostly qualitative, and their explanations were generally successful. Nowadays, theoretical calculations are able to give quantitative results, providing a ve ...
... of theoretical tools specially suited for the study of transition metal systems. Early theoretical studies on transition metal complexes were mostly qualitative, and their explanations were generally successful. Nowadays, theoretical calculations are able to give quantitative results, providing a ve ...
Few-body interactions in an ultracold gas of Cesium atoms
... which are loaded from an optically pre-cooled atomic cloud. We can tune the twobody interaction strength via an entrance-channel dominated magnetic Feshbach resonance. We can prepare optically trapped samples of ultracold Cs2 dimers by Feshbach association from an atomic Bose-Einstein condensate. Ac ...
... which are loaded from an optically pre-cooled atomic cloud. We can tune the twobody interaction strength via an entrance-channel dominated magnetic Feshbach resonance. We can prepare optically trapped samples of ultracold Cs2 dimers by Feshbach association from an atomic Bose-Einstein condensate. Ac ...
Non-perturbative approaches to transport in nanostructures and
... A typical case of this boundary effect is a small metallic island or a quantum dot. A metallic island is basically a metallic droplet, maybe capacitively coupled to some gate, and connected by metal oxide tunnel junctions to a bulk metal. A quantum dot is generally a small region in a 2D electron ga ...
... A typical case of this boundary effect is a small metallic island or a quantum dot. A metallic island is basically a metallic droplet, maybe capacitively coupled to some gate, and connected by metal oxide tunnel junctions to a bulk metal. A quantum dot is generally a small region in a 2D electron ga ...
The statistical interpretation according to Born and Heisenberg
... report do not start directly with the Schrödinger equation. I shall suggest that in Born and Heisenberg’s view, although they may be very useful tools both for calculational purposes and for understanding interference, the wave function and the Schrödinger equation are only effective notions. Sect ...
... report do not start directly with the Schrödinger equation. I shall suggest that in Born and Heisenberg’s view, although they may be very useful tools both for calculational purposes and for understanding interference, the wave function and the Schrödinger equation are only effective notions. Sect ...
Hyperspherical Approach to Quantal Three-body Theory
... an increasingly large number of bound states (λ∗n is the value of λ that produces a = ∞ and n s-wave bound states). The Wν converge to a universal potential displaying the repulsive barrier at R ≈ 2rvdW that prevents particles access to short distances. (c)–(e) demonstrate the suppression of the wav ...
... an increasingly large number of bound states (λ∗n is the value of λ that produces a = ∞ and n s-wave bound states). The Wν converge to a universal potential displaying the repulsive barrier at R ≈ 2rvdW that prevents particles access to short distances. (c)–(e) demonstrate the suppression of the wav ...
Observing a coherent superposition of an atom and a
... the laboratory is obtained by averaging over this phase 共implemented by the twirling operation T兲. 2. Interactions with the quantum reference frame ...
... the laboratory is obtained by averaging over this phase 共implemented by the twirling operation T兲. 2. Interactions with the quantum reference frame ...
Sampling Techniques for Computational Statistical Physics
... happen faster) but lead to high rejection rates (and thus degenerate samples since the same position may be counted several times) • And small moves that are less rejected but do not decorrelate the iterates much This trade-off between small and large proposal moves has been investigated rigorously ...
... happen faster) but lead to high rejection rates (and thus degenerate samples since the same position may be counted several times) • And small moves that are less rejected but do not decorrelate the iterates much This trade-off between small and large proposal moves has been investigated rigorously ...