Nonequilibrium entropy production in open and closed quantum
... needs to evolve from one state to another. In chapter 4 we turn to a thermodynamic discussion of isolated quantum systems. Quantum mechanical work and heat, however, are not given by the eigenvalues of Hermitian operators [LH07]. Hence, we will have to deal with the quantum probability distributions ...
... needs to evolve from one state to another. In chapter 4 we turn to a thermodynamic discussion of isolated quantum systems. Quantum mechanical work and heat, however, are not given by the eigenvalues of Hermitian operators [LH07]. Hence, we will have to deal with the quantum probability distributions ...
Continuous Measurement of an Atomic Current
... according to our current measurement, i.e. a current coupling. This can be understood as quantum reservoir engineering with current coupling to an environment. Below we will derive this master equation for various microscopic models of our CQED measurement scenarios, and thus system-environment coup ...
... according to our current measurement, i.e. a current coupling. This can be understood as quantum reservoir engineering with current coupling to an environment. Below we will derive this master equation for various microscopic models of our CQED measurement scenarios, and thus system-environment coup ...
Manifestations of Berry`s phase in molecules and condensed matter
... out as follows: there exist a whole class of observables which cannot be cast as the expectation values of any operator. The work which has followed Berry’s seminal paper has shown that such observables occur in the most disparate physical phenomena. In order to understand why these observables orig ...
... out as follows: there exist a whole class of observables which cannot be cast as the expectation values of any operator. The work which has followed Berry’s seminal paper has shown that such observables occur in the most disparate physical phenomena. In order to understand why these observables orig ...
Part 2a
... phenomenological parameters, which were introduced at a time of limited computational resources in order to assist with the theoretical estimation of essentially nonperturbative stronginteraction matrix elements. A universality of these condensates was assumed, namely, that the properties of all h ...
... phenomenological parameters, which were introduced at a time of limited computational resources in order to assist with the theoretical estimation of essentially nonperturbative stronginteraction matrix elements. A universality of these condensates was assumed, namely, that the properties of all h ...
Three Puzzles about Bohr`s Correspondence Principle
... Strictly speaking this intensity correspondence is exact only in the limit of large quantum numbers, and cannot be extended to small quantum numbers. Arguably any interpretation of Bohr’s correspondence principle must face the challenge of making sense of the following three puzzling claims: First, ...
... Strictly speaking this intensity correspondence is exact only in the limit of large quantum numbers, and cannot be extended to small quantum numbers. Arguably any interpretation of Bohr’s correspondence principle must face the challenge of making sense of the following three puzzling claims: First, ...
Elastic rod model of a supercoiled DNA molecule
... some emphasis upon the “RLC model crisis” and its solution. In section 2 we introduce the RLC model and discuss its range of validity. We note first that the elastic energy used in the present paper is invariant under rotation about the molecular axis, in apparent contradiction with the double-helix ...
... some emphasis upon the “RLC model crisis” and its solution. In section 2 we introduce the RLC model and discuss its range of validity. We note first that the elastic energy used in the present paper is invariant under rotation about the molecular axis, in apparent contradiction with the double-helix ...
The Equivalence Myth of Quantum Mechanics
... still empirically superior to both matrix mechanics and wave mechanics.) This fact, the derived quantisation of orbital angular momentum, and the coinciding energy values of a few toy systems (harmonic oscillator, rigid rotator) constituted the mentioned explanandum (in Section 1.5) for which an equ ...
... still empirically superior to both matrix mechanics and wave mechanics.) This fact, the derived quantisation of orbital angular momentum, and the coinciding energy values of a few toy systems (harmonic oscillator, rigid rotator) constituted the mentioned explanandum (in Section 1.5) for which an equ ...
BOULDER SUMMER SCHOOL LECTURE NOTES TOPOLOGICAL
... Within the bulk band gap, surface states are well defined and exponentially localized near the surface. How can we define surface states when the bulk is gapless, as in Weyl semimetals? For this we need to further assume translation invariance, so we label surface states by crystal momenta within th ...
... Within the bulk band gap, surface states are well defined and exponentially localized near the surface. How can we define surface states when the bulk is gapless, as in Weyl semimetals? For this we need to further assume translation invariance, so we label surface states by crystal momenta within th ...
Here - Fifth Quantum Thermodynamics Conference
... genesis. More precisely, motivated by recent experiments that have demonstrated the generation of entanglement between two distant superconducting qubits by measuring their parity, we focus in this work on the energetic cost of parity measurement-induced entanglement. Based on a quantum trajectory a ...
... genesis. More precisely, motivated by recent experiments that have demonstrated the generation of entanglement between two distant superconducting qubits by measuring their parity, we focus in this work on the energetic cost of parity measurement-induced entanglement. Based on a quantum trajectory a ...
Measurement of the quantum capacitance of interacting electrons in
... (Cdos ) that reduces the total capacitance. The second contribution results from the correlated motion of electrons, which generally leads to reduction of their total electrostatic energy1,5,6 . This adds a negative capacitance term (Cxc ) that increases the total capacitance. The density dependence ...
... (Cdos ) that reduces the total capacitance. The second contribution results from the correlated motion of electrons, which generally leads to reduction of their total electrostatic energy1,5,6 . This adds a negative capacitance term (Cxc ) that increases the total capacitance. The density dependence ...
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... The pre-‐requisite(s) for each of the following 5000-‐level modules is entry to the M.Sci. or M.Phys. Programme(s) for which they are specified, save where an additional pre-‐requisite is given. ...
... The pre-‐requisite(s) for each of the following 5000-‐level modules is entry to the M.Sci. or M.Phys. Programme(s) for which they are specified, save where an additional pre-‐requisite is given. ...
Quantum many-particle electron transport in time-dependent systems with Bohmian trajectories by Alfonso Alarc´
... Date of defense: April 2011 ...
... Date of defense: April 2011 ...
Quantum Magic - UMD WordPress blog
... of commuting and noncommuting observables. 1 In a seminal paper, he proved that it follows from this feature that there is only one way to define probabilities on the structure of quantum properties. I’ll follow my colleague Allen Stairs and use the term ‘entwined.’ Observables are entwined in the s ...
... of commuting and noncommuting observables. 1 In a seminal paper, he proved that it follows from this feature that there is only one way to define probabilities on the structure of quantum properties. I’ll follow my colleague Allen Stairs and use the term ‘entwined.’ Observables are entwined in the s ...
Quantum Gravity : Has Spacetime Quantum - Philsci
... So, fluctuations of the spacetime metric, to be expected within the naive approach to a description of quantum spacetime, are completely sufficient to make clear that one can not get over the mutual incompatibility of General Relativity and Quantum Mechanics by simply applying the usual quantization ...
... So, fluctuations of the spacetime metric, to be expected within the naive approach to a description of quantum spacetime, are completely sufficient to make clear that one can not get over the mutual incompatibility of General Relativity and Quantum Mechanics by simply applying the usual quantization ...
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.