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Fra's user avatar
Fra's user avatar
Fra's user avatar
Fra
  • Member for 9 years, 3 months
  • Last seen this week
17 votes
Accepted

Källén–Lehmann spectral representation for massless particle?

9 votes
Accepted

Anomaly is due to the noninvariance of the path-integral under a symmetry. Is the noninvariance reflected on 1PI effective action?

9 votes
Accepted

Non-local field redefinition and effects on path-integral measure

8 votes
Accepted

Finite Square Well Inside an Infinite Square Well

8 votes
Accepted

What is the correct quantization of Hamiltonians of the form $H=x·p$ whose naive quantization is not Hermitian?

8 votes
Accepted

Weinberg soft photon integral

6 votes
Accepted

Wightman Function for complex scalar field - timelike separations?

6 votes
Accepted

Quantum Central Force Problem and Angular Momentum

6 votes

Simple check for the global shape of the Earth

5 votes
Accepted

Polarization Sums in QCD for the calculation of parton model splitting functions

4 votes

Why is there a universal speed limit?

3 votes
Accepted

Is there useful information about normal modes/frequencies in the Hamiltonian matrix of a coupled system?

3 votes
Accepted

Force between two finite parallel current carrying wires

3 votes
Accepted

Quantum micro canonical ensemble

2 votes
Accepted

Eigenvalues dependent on choice of $\vec{A}$? (Pauli hamiltonian)

2 votes

The action of a relativistic point particle, the meaning of its parametrization invariance and possible potential terms

1 vote
Accepted

Arranging coefficients in a derivation of the Casimir energy

1 vote

What is the difference between + and - signs in superpositions of quantum states?

1 vote

Feynman paths of FTL velocity have imaginary momentum?

1 vote

Determine the value of $g$ with rolling ball

1 vote

Why the electromagnetic wave transmits momentum in the direction of the movement?

1 vote
Accepted

Show that a function takes the following form using the definition for the function of an operator

1 vote
Accepted

Temperature-dependence of quark potential in Abelian lattice gauge theory

0 votes
Accepted

Motion in the gravitational field along a trajectory