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There's very good table of different universality classes: Ising model lies in the same universality class with $phi^4$ theory.Ising in $d≥4$...
Asked on 08/26/2021
0 answerA train consists of an engine and $n$ trucks. It is travelling along a straight horizontal section of track. The mass of the engine and of each truck is...
Asked on 08/26/2021
6 answerIt is given in my textbook and one other book(that I got from the library) that:-...The earth has a magnetic dipole of dipole moment about $8.0times 10^{22} mathbf{ J.T^{-1}}$The...
Asked on 08/26/2021
1 answerI understand that the origin of atmospheric pressure is the weight of air.Imagine if there is a cylinder consisting of two compartments separated by a frictionless piston filled with...
Asked on 08/26/2021
2 answerIn the lecture https://www.youtube.com/watch?v=-9G54aCkNH0 (or see https://www.theorie.physik.uni-muenchen.de/activities/schools/archiv/asc_school_14/komargodski_notes.pdf for notes), Zohar Komargodski begins by examining the Hamiltonian$$H=frac{1}{2}p_x^2+frac{1}{2}p_y^2+frac{1}{2}lambda^2x^2y^2.$$He argues that for $|x|rightarrowinfty$,...
Asked on 08/26/2021
0 answerI'm a bit confused about what happens to frequency during the dispersion of white light passing through a prism. I understand that when a light wave is travelling in ...
Asked on 08/26/2021 by Baseball Fan
1 answerAs seen in Section 4 of Chapter 5 of Costello, K. "Renormalization and Effective Field Theory", or in section 5.2 $L_infty$-Algebras of Classical Field Theories and...
Asked on 08/26/2021 by Sigh_at_psi
1 answerIn the article I have been reading, we introduce the term "corrected diffusivity".Diffusion alone and the rest of the article is pretty much clear, but I can't quite grasp...
Asked on 08/26/2021
1 answerIn solid state physics we might describe systems using second quantization and use the Bloch basis for the states of the quantum mechanical system. For example, to create an electron...
Asked on 08/26/2021
1 answerThe expression for the first-order Born approximation to the scattering amplitude goes like$$f(theta) propto int d^3 r e^{-i ( k - k_i)r} V(r)$$and so in...
Asked on 08/26/2021
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