calcification
发表于 2025-3-21 16:33:34
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gorgeous
发表于 2025-3-21 21:56:18
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interrupt
发表于 2025-3-22 00:42:03
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清唱剧
发表于 2025-3-22 08:19:55
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Innovative
发表于 2025-3-22 12:26:12
One-Dimensional Systems,For a one-dimensional free particle does the set of observables composed of the Hamiltonian and Parity constitute a complete set?
宽大
发表于 2025-3-22 15:29:38
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circumvent
发表于 2025-3-22 20:47:34
Spin,Consider a system of two electrons that are in a state with opposite spin z-components. Calculate the . (where . is the total spin operator) expectation value in this state.
阻止
发表于 2025-3-22 22:57:17
Time Evolution,The Hamiltonian of a two-level quantum system can be written as .where . and . are its orthonormal eigenkets corresponding to the eigenvalues . and ., respectively.
Volatile-Oils
发表于 2025-3-23 01:36:41
Time-Independent Perturbation Theory,A particle of mass . is constrained to move along an . length segment in the presence of a small potential well, so that the total potential is .Consider the small potential well (see Fig. .) between 0 and . as a perturbation compared to the infinite confining well and calculate the energy eigenvalues at the first perturbative order.
depreciate
发表于 2025-3-23 07:04:48
Time-Dependent Perturbation Theory,Two particles of mass . move along the . axis, interacting by means of a force having characteristic elastic constant .. Assuming that, while they are in the ground state of energy ., the constant . is suddenly halved, what is the probability that a new energy measure will result in the energy of the ground state?