胡永紅,靳海芹,毛彩霞
(1.湖北科技學(xué)院核技術(shù)與化學(xué)生物學(xué)院,湖北 咸寧 437100,2.湖北第二師范學(xué)院物理與電子信息學(xué)院,湖北 武漢 430205)
軸子在核子和電子間傳遞的相互作用有效勢(shì)為:
(1)
圖1-石英和吸引質(zhì)量銅塊的幾何構(gòu)形示意圖
(2)
(3)
r〈Ψ|V(r)|Ψ〉r=r〈Ψ|P-1PV(r)P-1P|Ψ〉r=l〈Ψ|PV(r)P-1|Ψ〉l=-l〈Ψ|V(r)|Ψ〉l
(4)
根據(jù)如下的位置矢量變換:Prkj(r)P-1=-rkj,自旋的變換PσkP-1=σk和磁場(chǎng)的變換PBP-1=B.方程(3)對(duì)應(yīng)(2)式勢(shì)的不同手性,取相反的符號(hào).
(5)
上式中的矩陣元乘積可以采用單電子近似簡(jiǎn)化.利用等式:(σi·A)(σj·B)=A·B+iσi·(A×B)對(duì)電子自旋求和,矩陣元可以重寫為:
(6)
其中,|Ψk0〉和|Ψkn〉分別描述第i個(gè)原胞中第k個(gè)電子的初態(tài)和末態(tài).
(7)
{α|τ}Ψn(k1,r)=Ψn(αk1,r+τ)=eαk1·(r+τ)un(αk1,r+τ)=eαk1·rΨn(αk1,r)
(8)
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