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AccidentalFourierTransform
  • Member for 6 years, 11 months
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79 votes

What is a complete book for introductory quantum field theory?

60 votes
Accepted

Why do excited states decay if they are eigenstates of Hamiltonian and should not change in time?

39 votes
Accepted

Lorentz invariance of the Minkowski metric

36 votes

What is the issue with interactions in QFT?

35 votes

How can we see an atom now? What was the scale of this equipment?

35 votes
Accepted

Why are relativistic quantum field theories so much more restrictive than non-relativistic ones?

34 votes
Accepted

I'm missing the point of renormalization in QFT

31 votes
Accepted

Systematic way to draw all inequivalent Feynman diagrams

31 votes

Highly nonlinear equations

26 votes

What are the next generation physics experiments?

25 votes
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Feynman diagram and uncertainty

24 votes
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Quantum Field Theory in position space instead of momentum space?

23 votes
Accepted

Why is Fourier space called as momentum space?

22 votes
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What is the physical importance of topological quantum field theory?

22 votes
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Where does the $i$ come from in the Schrödinger equation?

21 votes

Books for particle physics and the Standard Model

20 votes
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What does the identity operator look like in Quantum Field Theory?

20 votes
Accepted

How does $\epsilon \mu = 1/c_m^2$ change when $\mu$ or $\epsilon$ (permeability or permittivity) is a tensor?

19 votes

How is the Schroedinger equation a wave equation?

18 votes

In a universe with four spatial dimensions would there be elementary particles with intrinsic isoclinic spin?

18 votes

Haag's comment on the relation between fields and particles

17 votes
Accepted

First quantization vs second quantization

17 votes

What is known about the hydrogen atom in $d$ spatial dimensions?

16 votes

Why is the speed of light said to be constant when we know it slows down in a medium?

16 votes
Accepted

Does a non-lagrangian field theory have a stress-energy tensor?

16 votes

Non-Perturbative Feynman diagrams?

16 votes
Accepted

Locality in QFT vs "non-local" in QM

15 votes

Does the concept of a "momenton" make sense?

15 votes
Accepted

Heisenberg's uncertainty principle for mean deviation?

14 votes
Accepted

A question on using Fourier decomposition to solve the Klein Gordon equation

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