MECÂNICA GRACELI - ESTATÍSTICA QUÂNTICA TENSORIAL DE CAMPOS [574]

TEOREMA DE GRACELI.

${\begin{aligned}{\frac {\mathrm {d} E_{\lambda }}{\mathrm {d} \lambda }}&={\bigg \langle }\psi _{\lambda }{\bigg |}{\frac {\mathrm {d} {\hat {H}}_{\lambda }}{\mathrm {d} \lambda }}{\bigg |}\psi _{\lambda }{\bigg \rangle }\\\\\end{aligned}},$

Onde

${\hat {H}}_{\lambda }$ é um operador hamiltoniano, dependendo de um parâmetro contínuo $\lambda \,$ ,
$|\psi _{\lambda }\rangle$ , é um estado próprio (auto função) do Hamiltoniano, dependendo implicitamente de $\lambda$ ,
$E_{\lambda }\,$ é a energia (autovalor) do esta
do $|\psi _{\lambda }\rangle$ , ie ${\hat {H}}_{\lambda }|\psi _{\lambda }\rangle =E_{\lambda }|\psi _{\lambda }\rangle$ .

{\bigg \langle }\Psi _{\lambda }(t){\bigg |}{\frac {\partial H_{\lambda }}{\partial \lambda }}{\bigg |}\Psi _{\lambda }(t){\bigg \rangle }=i\hbar {\frac {\partial }{\partial t}}{\bigg \langle }\Psi _{\lambda }(t){\bigg |}{\frac {\partial \Psi _{\lambda }(t)}{\partial \lambda }}{\bigg \rangle }

Para

i\hbar {\frac {\partial \Psi _{\lambda }(t)}{\partial t}}=H_{\lambda }\Psi _{\lambda }(t)

{\begin{aligned}{\frac {\mathrm {d} E_{\lambda }}{\mathrm {d} \lambda }}&={\bigg \langle }\psi _{\lambda }{\bigg |}{\frac {\mathrm {d} {\hat {H}}_{\lambda }}{\mathrm {d} \lambda }}{\bigg |}\psi _{\lambda }{\bigg \rangle }\\\\\end{aligned}},

{\begin{aligned}{\frac {\mathrm {d} E_{\lambda }}{\mathrm {d} \lambda }}&={\bigg \langle }\psi _{\lambda }{\bigg |}{\frac {\mathrm {d} {\hat {H}}_{\lambda }}{\mathrm {d} \lambda }}{\bigg |}\psi _{\lambda }{\bigg \rangle }\\\\\end{aligned}},

$G_{\mu \nu }\$ $T_{\mu \nu }$ G $T^{\nu }{}_{\alpha }$ [DR] = ${\hat {H}}$ $\left|\psi ({\vec {r}},t)\right\rangle$ $F^{\mu \nu }$ $T^{\mu \nu }$ $P^{\mu }\!$ $-i\hbar {\frac {\partial }{\partial x_{n}}}$ $.$ = $\left|\psi ({\vec {r}},t)\right\rangle$

$\psi ^{*}$

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