| 单词 | ket vector |
| 释义 | > as lemmasket vector A vector in Hilbert space symbolized by |>; esp. one representing the state of a quantized system. Frequently as ket vector. ΘΚΠ the world > matter > physics > quantum theory > [noun] > ket vector ket1947 1947 P. A. M. Dirac Princ. Quantum Mech. (ed. 3) i. 16 It is desirable to have a special name for describing the vectors which are connected with the states of a system in quantum mechanics, whether they are in a space of a finite or an infinite number of dimensions. We shall call them ket vectors, or simply kets, and denote a general one of them by a special symbol |>. 1957 F. Mandl Quantum Mech. (ed. 2) v. 102 Labels, in particular eigenvalues, distinguishing different ket vectors are written as arguments of the ket vectors. For example, we might write a set of vectors as |1>, |2>,..|n>, or the wave function (14.4) as |l, m>. 1972 J. M. Jauch in Salam & Wigner Aspects Quantum Theory ix. 142 Dirac never defines what a ket vector is mathematically, he describes its physical interpretation as ‘vectors which are connected with the states of a system in quantum mechanics’. From the context one concludes that they are vectors in a Hilbert space. 1973 S. Wieder Foundations Quantum Theory iii. 47 The inner product b. a is a complex scalar obtained by multiplying the bra form of b by the ket form of a. 1974 P. W. Atkins Quanta 30 The state of a system whose wavefunction is Ψn(r) is represented by the ket |n>, and the conjugate Ψn*(r) by the bra <n|. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。