Student Friendly Quantum Field Theory

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Student Friendly Quantum Field Theory

#1  Postby twistor59 » Mar 22, 2011 9:03 am

I came across this website, with some draft material for a QFT book. Looks like pretty good stuff - I wish these sorts of things had been around when I was doing this stuff. I had to make do with Bjorken and Drell :thumbdown:
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Re: Student Friendly Quantum Field Theory

#2  Postby tnjrp » Mar 22, 2011 9:18 am

Ooh, shiny!
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Re: Student Friendly Quantum Field Theory

#3  Postby cavarka9 » Mar 22, 2011 9:34 am

twistor59 wrote:I came across this website, with some draft material for a QFT book. Looks like pretty good stuff - I wish these sorts of things had been around when I was doing this stuff. I had to make do with Bjorken and Drell :thumbdown:

:thumbup: Thanks
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Re: Student Friendly Quantum Field Theory

#4  Postby C. Cochran » Mar 24, 2011 9:44 pm

Thank you. The lecture by Roman Jackiw on fractional charges is interesting, I just finished precalculus so i didn't understand everything but it did trickle through.
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Re: Student Friendly Quantum Field Theory

#5  Postby godsfavson » Apr 30, 2011 12:15 pm

If a particle is being detected with a photon having wavelength of the order x, where the particle is much larger than x(leading to accuracy in position), we find that the 'momentum imparted to this particle by the photon'(inversely proportional to wavelength) renders our measurement of its momentum inaccurate.

But since there is a simple formula for calculating the momentum of the photon, can we not compensate for the same in our results?

As before, I realize that these problems have already been worked out by the scientific community but an explanation would help further my understanding of this basic tenet of quantum theory.

Thank You
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Re: Student Friendly Quantum Field Theory

#6  Postby twistor59 » Apr 30, 2011 12:25 pm

godsfavson wrote:If a particle is being detected with a photon having wavelength of the order x, where the particle is much larger than x(leading to accuracy in position), we find that the 'momentum imparted to this particle by the photon'(inversely proportional to wavelength) renders our measurement of its momentum inaccurate.

But since there is a simple formula for calculating the momentum of the photon, can we not compensate for the same in our results?

As before, I realize that these problems have already been worked out by the scientific community but an explanation would help further my understanding of this basic tenet of quantum theory.

Thank You
Rohit


If I want to compensate for (any component of) the imparted momentum from the photon, I need to know (that component of) the momentum of the photon. But if I know that component of the momentum, I don't know where the photon is (in that coordinate), so I don't get the required position information from the scattering event.
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Re: Student Friendly Quantum Field Theory

#7  Postby Areopagitican » Apr 30, 2011 8:19 pm

twistor59 wrote:I came across this website, with some draft material for a QFT book. Looks like pretty good stuff - I wish these sorts of things had been around when I was doing this stuff. I had to make do with Bjorken and Drell :thumbdown:

Sweet find.
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Re: Student Friendly Quantum Field Theory

#8  Postby hackenslash » Apr 30, 2011 9:09 pm

Kewl stuff.
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Re: Student Friendly Quantum Field Theory

#9  Postby Daniel » Aug 14, 2012 12:01 am

hey,
I would like to know if i can consult with someone about solutions to the problems apear in Mark Srednicki's book "Quantum field theory"
Thanks
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Re: Student Friendly Quantum Field Theory

#10  Postby twistor59 » Aug 14, 2012 7:58 pm

Daniel wrote:hey,
I would like to know if i can consult with someone about solutions to the problems apear in Mark Srednicki's book "Quantum field theory"
Thanks


I don't have a copy of Srednicki. You could try posting the questions - maybe someone could answer. Or try http://www.physics.stackexchange.com
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Re: Student Friendly Quantum Field Theory

#11  Postby iamthereforeithink » Aug 18, 2012 5:35 pm

Very nice. Thanks for the link :cheers:

You can also learn QFT directly from Prof. Alan Guth on MIT's ocw :

http://ocw.mit.edu/courses/physics/8-32 ... ring-2008/

Also check out many other interesting courses on the ocw.
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