Bra–ket notation is a notation for linear algebra and linear operators on complex vector spaces ua ke nrog lawv ob qhov chaw ob qho tib si nyob rau hauv cov ntaub ntawv finite-dimensional thiab infinite-dimensional. Nws yog tsim tshwj xeeb kom yooj yim rau cov hom kev suav uas nquag tuaj hauv quantum mechanics.
Yuav ua li cas sau ib lub tsho khiab mis?
Yuav ua li cas nws tsuas yog siv ib daim ntawv teev npe raws li qhia hauv daim duab thiab xaiv los ntawm nws qhov loj (txog txoj cai ntawm thawj kab hauv pic). Tom qab ntawd siv txav mus rau pem hauv ntej (lub pob ntawm sab laug-hloov ntawm cov keyboards feem ntau) muab cov kab ntsug |. Hauv kev sib xyaw ua ke koj tau txais qhov tseeb bra-ket cim.
YPuas yog bra lub complex conjugate ntawm ket?
Ib tsho hauv qab yog hermitian conjugate ntawm cov sib txuas ket Nco ntsoov tias yog tias ib qho ntawm cov ntsiab lus ntawm ket yog cov lej nyuaj, koj yuav tsum coj lawv cov kev sib txuas ua ke thaum tsim cov kev cuam tshuam. bra. Piv txwv li, yog tias koj tus lej complex hauv ket yog a + bi, nws txoj kev sib txuas hauv lub tsho hauv qab yog - bi.
Dab tsi yog qhov sib txawv ntawm bra thiab ket?
yog tias ket yog (physics) vector, hauv qhov chaw hilbert, tshwj xeeb tshaj yog sawv cev rau lub xeev ntawm quantum mechanical system; lub complex conjugate ntawm ib lub tsho loj; ib tug ket vector cim los ntawm |〉 thaum lub tsho khiab mis yog (physics) ib qho ntawm ob lub vectors hauv cov qauv sau los piav qhia txog quantum xeev hauv quantum mechanics, lwm qhov…
ket bra txhais li cas hauv physics?
Bra-ket notation is a standard notation for piav txog quantum states in the theory of quantum mechanics composed of angle brackets and vertical bars. Nws kuj tseem siv tau los qhia txog cov vectors paub daws teeb meem thiab cov haujlwm ua haujlwm hauv lej.
