Dirac notation

Dirac's bracket notation is an elegant and concise way of expressing many of the key ideas in quantum mechanics, making the distinction between the state and its representations clear, making orthonormalization easy to state, and expressing completeness in terms of projection operators. (This lecture is part of a series for a course based on Griffiths' Introduction to Quantum Mechanics. The Full playlist is at • Carthage PHY4200 )

[@AlejandroPerez-if7mc]

Hey buddy, your channel is very good, very helpful for getting all this concepts altogether, some of us really need it. U beat Susskind's course in clarity and content by far.

[@anshumanverma3176]

Completely agreed!!!

[@albertliu2599]

Check your understanding: . . . . 1: H applies on the right state |ψm>, and return Em|ψm>. Em is just and number and get outside of the braket. So Hnm = Em 2: Hnm is a diagonal matrix with values E1,E2...En on its diagonal line. 3: a+|ψm> and returns 1*|ψm+1>. a+nm = . 4: a+nm is a off-diagonal matrix with values 1,1,1,1,1.... on the line just below the diagonal line.

[@PatiparnPojanart]

Thank you very much. I could not belive myself that I can finish all of your clips in this channel successfully. My knowledge about Quantum mechanics and High level of mathematics have rapidly evolve. (So, I have many states of energy🤣) And from now on, I decided to learn master and doctoral degree in the near future.

[@ethangraybrook-paul6388]

Fantastic video, had 3 or 4 different concepts all click for me

[@solsticetwo3476]

At 13:30, a_n are complex numbers, not vectors; and Q_mn are matrix elements

[@mgchevelle68]

these videos are very helpful. thank you

[@guitar0wnz]

Saving my damn life man, love these videos

[@wajihazia912]

what is the difference between eigenstate and eigenfunction? it is used interchangeably in the Griffith's book

[@abhibanerjee4457]

both are same

[@bazarovism]

wajiha zia same. Eigenvector is also same

[@natpakistan9334]

Sir please can you tell me that how you made these videos I mean which setup you use. I pad, mobile phone and which kind of note software you uses. These hand written videos are really beautiful and i also want to make like these video so please tell me.

[@fernandajb5042]

Susskind's is not very organized as Brant is...Also, he lacks patient

[@Crusherdub]

+Maria Jongewaard De Boer agreed. Don't deny susskind is brilliant but i find his lectures to be hard to follow and really get into.. Brant is the best.

[@Squirroo]

thanks man!!!!! SAVIOUR

[@yashsingh6793]

Where are you my friend

[@pixelberrychoicespodcast2.59]

Jiii