8.334: Statistical Mechanics of Fields

Anonymous Comments (Spring 2024)


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From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: April 12, 2024

If the exam is open book, does it mean is it okay to bring (Ipad or handwritten) class notes to the exam?

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Response: Handwritten notes are OK, but iPad is not.


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: April 12, 2024

I would like to have Recitation 5 and 6 on Wednesday, like previous recitations, rather than on the day of Pset due, in case I have questions to address during recitation and TA office hours on Thursday :)

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Response: This is a reasonable request, which it seems I can accommodate with my schedule. Assuming it does not conflict with other student priorites, I have tentatively modified the schudyle, with the new schedule here.


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: April 11, 2024

Hello,  Have logistical details about the test been posted? How many problems will the test be, and will we have access to notes?  Thank you.

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Response: Yes, in Announcements webpage, as


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: March 21, 2024

For Q3e Pset 2, should the question ask for recursion relations for (t, K_2, u) instead of K_sigma?

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Response: Yes, but note the main issue is the recursion relations for (t,u).


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: March 11, 2024

May you upload Additional Problems for PSet 3 this week, to facilitate revision? Thank you!

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Response: They are now posted here, PS3Rev.pdf.


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: February 19, 2024

How should we submit our problem set this week?

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Response: The Physics Homework bins are located at the intersection of buildings 8 and 16, on 3rd floor on building 8 (connecting to 4th floor of building 16). There is a box that is marked 8.334. If you prefer not to hand in paper copies, you can make arrangements with the TA (swmusserATmitDOTedu) to submit your work electronically.


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: February 18, 2024

To find the optimal BH_0 should we minimize the difference between <BH-BH_0> with respect to each m_alpha?  Then do we use the self-consistency equations in e? And if so, is there a specific response function we should consider?

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Response:  The free energy, which is subject to the Gibbs inequality in part (d), has to be extremized with respect to the trial fields h.


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: February 16, 2024

For Pset 1, are Q5d and f different?

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Response:  Answers are similar.


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: February 13, 2024

For PSet1, Q4-(f), I assume the question intends the correction term to be \pi^2 / 3n^2 J_v, not \hat{J_v}? \hat{J_v} is dimensionless, so appearing alongside kT_c does not look correct.

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Response:  No, J is dimensionless \hat J has dimensions of  k_BT.


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: February 13, 2024

For the remark immediately after Eqn (II.30) in lec3.dvi of https://web.mit.edu/8.334/www/lectures/lec4.html, could you slightly elaborate further? How did we obtain the first derivative of psi for Eqn (II.30)?

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From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: February 12, 2024

For the functional integral remark found in page 16 of the document Lec2.dvi, may you elaborate more (perhaps in class or over here)?

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Response:  For the top question I am confused as following II.30 there is no statement about derivatives.  I believe these types of questions are best addressed, and discussions provided, in person (in class or after).


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: February 12, 2024

Are the response functions for a given system diverging a sufficient and necessary condition for a critical point?

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Response: A diverging response is certainlhy indicztive of something interesting going on. I am relunctant to make a general statement that could require qualifications; e.g. transverse responses are infinite in an ordered phase when continuous symmetry is broken, due to Goldstone modes.


From: anonymous-8.334-student@MIT.EDU
Subject: comments on 8.334
Date: February 11, 2024

For PSet 1, question 1, should we include the phase space measure 1/h^3 in the integration?

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Response: No, it is not needed.


8.334 Anonymous Discussions- Spring 2024 - last updated     4/16/2024   by M. Kardar