quantum mechanicsoperatornoncommuting observableexplicit expressionsnoncommutivity/ A0365B Foundations, theory of quantum measurement, miscellaneous quantum theoriesThe general question of defining the expectation value of an operator for a fixed value of another noncommuting observable is considered and ...
The time dependence of the wave function gives rise to time dependence of the expectation value of observables. We have been exploring the difficulties that advanced undergraduate and graduate students have with time dependence of expectation values in quantum mechanics. We have developed and ...
These results establish the potential of a useful quantum advantage using noisy, digital quantum processors. This is a preview of subscription content, access via your institution Access options Access Nature and 54 other Nature Portfolio journals Get Nature+, our best-value online-access ...
Determine the expected value of the binding energy for an ion pair of LiF. State true or false: The points where the potential is the same in three-dimensional space lie on a surface. Does quantum physics prove the existence of an afterlife?
Several examples of Statistical Mechanics are examined: gas in thermal equilibrium, space plasmas out of thermal equilibrium, and multi-dimensional quantum harmonic oscillator at thermal equilibrium. Section 4 introduces the L p ℒ𝑝 variance; its expression is justified and examined in detail. In...
Similar estimates are shown for the expectation value of func- tions of H. Sufficient conditions to have uniformly bounded expectation values are made explicit and the consequences on other approaches to quantum stability are discussed. KEY WORDS: Quantum stability; energy expectations; quantum ...
We present a new algorithm for upper bounding the maximum average linear hull probability for SPNs, a value required to determine provable security against... L Keliher,H Meijer,S Tavares - International Conference on Advances in Cryptology-eurocrypt 被引量: 109发表: 2001年 Efficient and accurate...
We consider the quantum expectation value A= a??ψ|A|ψa〈 of an observable A over the state |ψa〉. We derive the exact probability distribution of A seen as a random variable when |ψa〈 varies over the set of all pure states equipped with the Haar-induced measure. To illustrate ...
Expectation Values of Observables in Time-Dependent Quantum Mechanicsdoi:10.1023/A:1023279311564Jean Marie BarbarouxAlain JoyeJ. M. Barbaroux e A. Joye, Expectation values of observables in time-dependent quan- tum mechanics, J. Anal. Appl. 213 n.2, (1997), p. 698-722....
We consider quantum systems driven by Hamiltonians of the form H+W(t) , where the spectrum of H consists of an infinite set of bands and W(t) depends arbitrarily on time. Let 〈H〈 φ (t) denote the expectation value of H with respect to the evolution at time t of an initial ...