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Physics
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SRS's user avatar
SRS
  • Member for 10 years, 11 months
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84 Answers

Score Activity Newest
15 votes
Accepted

Why does the Higgs field fall into the same ground state at all points across space?

11 votes

Why are so many energies represented by $\frac{1}{2} ab^2$?

5 votes
Accepted

Derivation of Squared Angular Momentum in Spherical Coordinates

5 votes
Accepted

Can particles at rest have wave nature?

5 votes
Accepted

Why do not we consider the topological term in Abelian gauge theory?

4 votes

Why is the effective action $\Gamma[\phi_c] \propto -(VT)$ (spacetime volume)?

4 votes
Accepted

How is particle creation (or annihilation) possible in non-relativistic many body physics?

4 votes

Why is the energy of $2s_{1/2}$ greater than the energy of $2p_{1/2}$ after the Lamb shift is taken into account?

3 votes

What are disorders in condensed matter parlance?

3 votes

Equal time commutation relations in canonical quantization of relativistic free fields

3 votes
Accepted

Divergence of Feynman diagram

3 votes

Direct product of spin representations

3 votes
Accepted

How does cosmological principle imply an expanding space?

3 votes

Vacuum to vacuum transition amplitude confusion

3 votes

What physical situation will give a negative mass squared?

3 votes

No massless new goldstone boson after 1D U(1) spontanous symmetry breaking?

3 votes
Accepted

Symmetry properties of the scalar potential and the vector potential

3 votes

Do we need a bounded domain for the Laplace equation to have a non-zero solution $u$?

3 votes

The quantum state just after a position measurement

3 votes

Why is the ground state important in condensed matter physics?

2 votes
Accepted

Photon momentum in QED

2 votes
Accepted

How can we do this tensor product $F_{\mu \nu}F^{\mu \nu}$?

2 votes
Accepted

Does light have mass as it is attracted through gravitational force?

2 votes
Accepted

Why do we always need quantities to be Lorentz Invariant (LI) in relativity?

2 votes

Mass term in Maxwell's Lagragian for Electromagnetism

2 votes

Why is the Universe spatially flat even though the various energy densities are nonzero?

2 votes
Accepted

Expectation values in a quantum field theory

2 votes

Simple harmonic motion about an unstable equilibrium position?

2 votes
Accepted

Why is the centripetal net force always to the center?

2 votes
Accepted

Electric field lines and coordinates

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