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dsfkgjn
  • Member for 5 years, 2 months
  • Last seen more than 1 year ago
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4
Matrix elements $\langle n,k|x|n',k'\rangle$ for Bloch states
May 30, 2022
question
2
Does introducing a gauge field into the complex scalar field theory Lagrangian change its dynamics?
Oct 19, 2020
question
2
S-matrix expansion for the $\phi^4$ theory and the interaction picture
Jan 13, 2021
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2
Proof that the self-energy is an inverse lifetime
Jun 28, 2021
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2
High temperature expansion of the Ising model - proof of extensivity of free energy
Nov 1, 2021
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2
Checking if an integral converges (or diverges) using dimensional analysis
Nov 7, 2022
question
1
Meaning of a strange Feynman diagram for the $\phi^3$ scalar Field theory
Jul 1, 2021
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0
Confusion relating to discretizing a Lagrangian and the Fourier transform conventions thereof
Jan 6, 2021
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Best resource for dynamical symmetry of hydrogenic atom and its energy levels
Mar 12, 2021
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$S$-Matrix Peskin and Schroeder
Jul 1, 2021
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Cross-post: Matrix elements <n,k|x|n',k'> for Bloch states