Josephson Effect and Selected Applications: an Example
... it can come up that some microscopical features show evident macroscopical effects, but they can not be easily included into macroscopic theories because of practical difficulties in calculations. In this case, for example by glass theories or quantum chemistry, efforts are put in phenomenological a ...
... it can come up that some microscopical features show evident macroscopical effects, but they can not be easily included into macroscopic theories because of practical difficulties in calculations. In this case, for example by glass theories or quantum chemistry, efforts are put in phenomenological a ...
Quantum reflection and interference of matter waves from
... We now discuss the total interaction potential for a periodically doped surface and derive its asymptotic behavior. We will see in Sec. IV that its asymptotic shape determines the probability for quantum reflection and is thus of major significance for the observation of different diffraction orders ...
... We now discuss the total interaction potential for a periodically doped surface and derive its asymptotic behavior. We will see in Sec. IV that its asymptotic shape determines the probability for quantum reflection and is thus of major significance for the observation of different diffraction orders ...
theoretical physics in the Netherlands
... • At very short distances, spacetime fluctuates wildly • No background spacetime; “the stage itself becomes actor” Sanity conditions • Wild geometries at short distance ok • Einstein GR at larger distance ...
... • At very short distances, spacetime fluctuates wildly • No background spacetime; “the stage itself becomes actor” Sanity conditions • Wild geometries at short distance ok • Einstein GR at larger distance ...
Effect of Electron–Electron Interaction on Spin Relaxation of Charge
... They cannot be used to evaluate the relative contributions of electron–electron and electron–phonon scattering and distinguish between the effects due to Hartree– Fock corrections to electron energy and electron–electron collisions. In this paper, we present a kinetic theory of spin relaxation of co ...
... They cannot be used to evaluate the relative contributions of electron–electron and electron–phonon scattering and distinguish between the effects due to Hartree– Fock corrections to electron energy and electron–electron collisions. In this paper, we present a kinetic theory of spin relaxation of co ...
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... M&S p.288-296 ● CP violation is one of the most interesting topics in physics: ■ The laws of physics are different for particles and anti-particles! ■ What causes CP violation? ◆ It is included into the Standard Model by Kobayashi and Maskawa (Nobel Prize 2008). ◆ Is the CP violation observed w ...
... M&S p.288-296 ● CP violation is one of the most interesting topics in physics: ■ The laws of physics are different for particles and anti-particles! ■ What causes CP violation? ◆ It is included into the Standard Model by Kobayashi and Maskawa (Nobel Prize 2008). ◆ Is the CP violation observed w ...
Interacting Quantum Observables: Categorical Algebra and
... correctness, as a language to describe quantum theory, the Hilbert space formalism seems somewhat ad hoc from a conceptual perspective. The first to acknowledge this was von Neumann himself, who for this reason denounced his own Hilbert space formalism in 1935 (see [10]), only three years after he p ...
... correctness, as a language to describe quantum theory, the Hilbert space formalism seems somewhat ad hoc from a conceptual perspective. The first to acknowledge this was von Neumann himself, who for this reason denounced his own Hilbert space formalism in 1935 (see [10]), only three years after he p ...
Kitaev - Anyons
... Thus, the hunt for anyons and topological order is a difficult endeavor. Why do we care? First, because these are conceptually important phenomena, breaking some paradigms. In particular, consider these principles (which work well and provide important guidance in many cases): 1. Conservation laws com ...
... Thus, the hunt for anyons and topological order is a difficult endeavor. Why do we care? First, because these are conceptually important phenomena, breaking some paradigms. In particular, consider these principles (which work well and provide important guidance in many cases): 1. Conservation laws com ...
Flow of zero-point energy and exploration of phase space in
... space, we employ a reduced ZPE ge ZP , whereby the quantum correction g accounts for the fraction of ZPE included. This ansatz is based on the theoretical framework given in Paper I @G. Stock and U. Müller, J. Chem. Phys. 111, 65 ~1999!, preceding paper#, which provides a general connection between ...
... space, we employ a reduced ZPE ge ZP , whereby the quantum correction g accounts for the fraction of ZPE included. This ansatz is based on the theoretical framework given in Paper I @G. Stock and U. Müller, J. Chem. Phys. 111, 65 ~1999!, preceding paper#, which provides a general connection between ...
Po-Hsiang Wang Magneto-optical studies of optical spin injection in
... the order of few ns) can be tens of times longer than its radiative lifetime under cryogenic temperatures [1], providing an opportunity for highly polarized spin/light sources [4]. In order to incorporate spin into real world applications mentioned above, key prerequisites such as generation, inject ...
... the order of few ns) can be tens of times longer than its radiative lifetime under cryogenic temperatures [1], providing an opportunity for highly polarized spin/light sources [4]. In order to incorporate spin into real world applications mentioned above, key prerequisites such as generation, inject ...
Quantum Information Processing - wolfgang
... • The information is usually processed on one and the same quantum register16 realized as an array of qubits,17 i.e. quantum mechanical systems with a preselected simple quantum alternative corresponding to orthonormal state vectors, usually denoted |0i and |1i . • The possible (pure) states of such ...
... • The information is usually processed on one and the same quantum register16 realized as an array of qubits,17 i.e. quantum mechanical systems with a preselected simple quantum alternative corresponding to orthonormal state vectors, usually denoted |0i and |1i . • The possible (pure) states of such ...
Maximizing the entanglement of two mixed qubits
... types of off-diagonal terms, those that represent the entanglement and those that represent single-particle superposition. These single-particle superposition terms can be set to zero by local linear operations, and so, by definition, cannot change the net entanglement or linear entropy. 共iii兲 The d ...
... types of off-diagonal terms, those that represent the entanglement and those that represent single-particle superposition. These single-particle superposition terms can be set to zero by local linear operations, and so, by definition, cannot change the net entanglement or linear entropy. 共iii兲 The d ...
Path integral for the quantum harmonic oscillator using elementary
... developing methods of solving these integrals have been made in the last 15 years.4 Yet even before these advances, the approach bore fruit in many ways. For example, the derivation5 of the ‘‘Feynman rules’’ was an extremely important contribution which greatly simplified calculations in perturbatio ...
... developing methods of solving these integrals have been made in the last 15 years.4 Yet even before these advances, the approach bore fruit in many ways. For example, the derivation5 of the ‘‘Feynman rules’’ was an extremely important contribution which greatly simplified calculations in perturbatio ...
Renormalization and quantum field theory
... We give an overview of the construction of a perturbative quantum field theory from a Lagrangian. We start by translating some terms in physics into mathematical terminology. Definition 1. Spacetime is a smooth finite-dimensional metrizable manifold M, together with a “causality” relation 6 that is ...
... We give an overview of the construction of a perturbative quantum field theory from a Lagrangian. We start by translating some terms in physics into mathematical terminology. Definition 1. Spacetime is a smooth finite-dimensional metrizable manifold M, together with a “causality” relation 6 that is ...
Boson sampling for molecular vibronic spectra - CIQM
... without the need for a full quantum computer, instead using a linear optics quantum set-up. In this work, we propose a modification of boson sampling for the purpose of quantum simulation. In particular, we show that, by means of squeezed states of light coupled to a boson sampling optical network, o ...
... without the need for a full quantum computer, instead using a linear optics quantum set-up. In this work, we propose a modification of boson sampling for the purpose of quantum simulation. In particular, we show that, by means of squeezed states of light coupled to a boson sampling optical network, o ...
Luttinger Liquids
... To actually calculate the Fourier transform of this expression to extract the momentum distribution N(p) discussed in the context of Fermi liquids, is a bit complicated. The result is however, as expected, that the discontinuity totally disappears, which shows that there are no stable gapless charge ...
... To actually calculate the Fourier transform of this expression to extract the momentum distribution N(p) discussed in the context of Fermi liquids, is a bit complicated. The result is however, as expected, that the discontinuity totally disappears, which shows that there are no stable gapless charge ...
What Makes a Classical Concept Classical? Toward a
... distinction would coincide with the instrument/object distinction; hence, its designation in what follows as the “coincidence interpretation” of the doctrine of classical concepts. I will argue, instead, that the two distinctions cut across one another, that Bohr required a classical description of ...
... distinction would coincide with the instrument/object distinction; hence, its designation in what follows as the “coincidence interpretation” of the doctrine of classical concepts. I will argue, instead, that the two distinctions cut across one another, that Bohr required a classical description of ...
Griffiths singularities in the disordered phase of a quantum Ising... H. Rieger
... values. Physically this comes from regions which are locally ordered. The probability of having such a region is exponentially small in its volume, V, but, when it occurs, there is an exponentially large relaxation time,8 because, to invert the spins in this region at some imaginary time one has to ...
... values. Physically this comes from regions which are locally ordered. The probability of having such a region is exponentially small in its volume, V, but, when it occurs, there is an exponentially large relaxation time,8 because, to invert the spins in this region at some imaginary time one has to ...
Bell's theorem
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Bell's theorem is a ‘no-go theorem’ that draws an important distinction between quantum mechanics (QM) and the world as described by classical mechanics. This theorem is named after John Stewart Bell.In its simplest form, Bell's theorem states:Cornell solid-state physicist David Mermin has described the appraisals of the importance of Bell's theorem in the physics community as ranging from ""indifference"" to ""wild extravagance"". Lawrence Berkeley particle physicist Henry Stapp declared: ""Bell's theorem is the most profound discovery of science.""Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics (though it still leaves the door open for non-local hidden variables). Bell concluded:Bell summarized one of the least popular ways to address the theorem, superdeterminism, in a 1985 BBC Radio interview: