Last Updated：2025/11/21

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(physics) A vector, in Hilbert space, especially as representing the state of a quantum mechanical system; the complex conjugate of a bra; a ket vector. Symbolised by |...〉.

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ket

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Source Word

ket

IPA(Pronunciation)

/kɛt/

Noun

(physics) A vector, in Hilbert space, especially as representing the state of a quantum mechanical system; the complex conjugate of a bra; a ket vector. Symbolised by |...〉.

Japanese Meaning

（物理学）ヒルベルト空間内におけるベクトル、特に量子力学系の状態を表すもの。ブラの複素共役にあたり、ケットベクトルとも呼ばれる。記号は |...〉で表される。

What is this buttons?

The experimentalist prepared a ket that corresponded to a superposition of spin-up and spin-down.

Google Translation / DeepL Translation

実験者はスピンアップとスピンダウンの重ね合わせに対応する状態ベクトルを準備した。

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Sense（1）

(physics) A vector, in Hilbert space, especially as representing the state of a quantum mechanical system; the complex conjugate of a bra; a ket vector. Symbolised by |...〉.

A particular ket, say |A⟩, might be represented by a particular column vector. Its corresponding bra, ⟨A|, would then be represented by the row vector which is the transpose conjugate of that column vector.

Google Translation / DeepL Translation

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kets

（ plural ）

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ket

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