CSIR NET Physics Ising Model Potts Model Full Concept and Problems

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CSIR NET Physics Ising Model Potts Model Full Concept and Problems

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CSIR NET Physics based this topic is important for Gate Physics aspirants also. Ising model is a type of model that explains the magnetization behaviour of ferromagnetic and anti ferromagnetic materials. It can also be applied to alloys. Potts Model is the generalisation of Ising model from which question was asked in csir net physics or csir net physical science 2023 exam.
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Пікірлер: 14

@om25396 8 ай бұрын

In last qus if q coordination no given then there are qN/2 different pairs If all are up spin then then we get qN/2 up spin combination Similarly if all in down we get qN/2 down spin combination And if antiparllel then we get qN/2 antiparllel combination So for ground statewe have to add up and down which give qN

@om25396 8 ай бұрын

It is part of the ising model where we just calculate up and down spin

@MahedarakhshanAnsari 2 ай бұрын

In last ques ( Potts Model ) in anskey it is given 1 , ur is 2 which is correct one ??

@lisajose9219 10 ай бұрын

🎉🎉❤🎉🎉

@mentalx5103 4 ай бұрын

Sir in last question, when two spins are interacting we get 2 ground state from 4 states. Similarly if N spins are interacting we will not get N ground state, but you have said there will be 2N ground state.? I didnot understand how please explain?

@vaibhavpratap1041 3 ай бұрын

There will be N ground states . You can verify why considering q = 1 or 3 for 2 dipoles .

@pabitrabauri5338 10 ай бұрын

Thank you much sir❤ But in Hamiltonian ,the spin magnetic interaction term, how to divided by 2 please explain

@Physframe 10 ай бұрын

I wrote it like this: x = 1/2(x+x) and then used a periodic boundary condition. For this reason, read the answer that I gave in another comment section of the same video.

@mohitdhanik5274 Жыл бұрын

Sir from which book you read this potts model

@Physframe Жыл бұрын

In many books, Potts model is said to be the generalisation of the Ising model like, you go with Mehran Kardar book of Statistical Physics Chapter: Models and Methods, you can see. The detailed theory on it is not given but you can search for that on the web.

@mohitdhanik5274 Жыл бұрын

@@Physframe ok sir

@thefashionshop8787 11 ай бұрын

23.7 apne B ke sath sigma i+sigma i kdse likha or uske bad sigma i+sigma (i+1) yeh kese aya!!!

@Physframe 11 ай бұрын

'i' is general running from 1 to N. In one dimension, all spins have nearest neighbours on their left and right. If S1 and SN are nearest neighbours, you can apply periodic boundary condition, then Si has also there nearest neighbours Si-1 and Si+1. So, we can also write Si-1 = Si = Si+1.

@thefashionshop8787 11 ай бұрын

@@Physframe OK sir get it😊Thank you sir🙏😊