hokhani's latest activity
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Hhokhani replied to the thread Undergrad Antilinear Operators.Thanks: right, your method was very nice, but I would like to try this method which still I am stuck in that.
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HIn general, if the operator ##C = A B## is made out of two operators ##A## and ##B##, then from $$ \langle \psi, C \psi \rangle =...
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Hhokhani replied to the thread Undergrad Antilinear Operators.Everything is ok if we have ##(LK)^{\dagger}=L^{\dagger} K##. Is this equation correct?
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Hhokhani replied to the thread Undergrad Angular Momentum Vector and Its Magnitude.The calculations give ##|L_z=0\rangle =\sqrt{\frac{3}{8}} (|L_x=2\rangle +|L_x=-2\rangle ) - \frac{1}{2} |L_x=0\rangle## and we expect...
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Hhokhani replied to the thread Undergrad Antilinear Operators.Thanks, but doing calculation considering ##A^{\dagger} = KL^{\dagger}## we have: ## |\alpha \rangle =\hat{A}^{\dagger} |\phi\rangle...
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H@hokhani I wouldn't focus too much on Eq.(26), as it seems that it's just a partiular definition the author chose to adpot in order to...
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Hhokhani replied to the thread Undergrad Antilinear Operators.Let's calculate as follows: ##|\alpha \rangle =\hat{A}^{\dagger} |\phi\rangle =K^{\dagger} L^{\dagger}=K^{\dagger} \begin{bmatrix} 0 &...
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Hhokhani reacted to PeroK's post in the thread Undergrad Angular Momentum Vector and Its Magnitude with
Like.
In general an expected value does not itself need to be one of the possible values. For example, the expected value of a roll of a... -
Hhokhani replied to the thread Undergrad Antilinear Operators.Thanks, could you please explain more how did you get this equation? I considered ##|\alpha \rangle =\hat{A}^{\dagger} |\phi \rangle...
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Hhokhani replied to the thread Undergrad Angular Momentum Vector and Its Magnitude.Right, Right, but how to realize which configuration is not preferred?
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Hhokhani replied to the thread Undergrad Angular Momentum Vector and Its Magnitude.All the configurations of ##(L_x,L_y,0) ## are as follows; 4 configurations with ##(L_x,L_y)=(\pm2, \pm2)## and ##L^2=8 \hbar^2## 4...
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HAn antilinear operator ##\hat{A}## can be considered as, ##\hat{A}=\hat{L}\hat{K}##, where ##\hat{L}## is a linear operator and...
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Hhokhani replied to the thread Undergrad Angular Momentum Vector and Its Magnitude.Even if the system be in an equal superposition of all of these 25 configurations, we have ##\langle L^2 \rangle =4 \hbar^2## which...
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Hhokhani reacted to PeterDonis's post in the thread Undergrad Angular Momentum Vector and Its Magnitude with Like.
Right, which means, to amplify on @PeroK's answer a bit, that the system cannot be in any of these configurations. It must be in a...
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Hhokhani reacted to PeroK's post in the thread Undergrad Angular Momentum Vector and Its Magnitude with Like.
Well, exactly! There is no realistic configuration that satisfies the requirements. I'm suprised this example isn't shown more often...