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Ozzy
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2 votes
1 answer
98 views

How does the on-shell (OS) scheme work if we assume mass to be zero?

1 vote
1 answer
138 views

Which Hamiltonians turn disentangled states into entangled ones?

1 vote
0 answers
33 views

What is the difference between the center of mass energy of partons, and the invariant mass of the particles after a collision?

1 vote
0 answers
52 views

Confusion about the dressed propagator

0 votes
1 answer
141 views

What does complex permittivity mean?

0 votes
0 answers
39 views

Can $\gamma^5$ matrices be ignored in $q\bar{q}\to ZZ$ processes?

0 votes
0 answers
27 views

Do quark self-energy insertions on external quark lines vanish in the MS scheme?

0 votes
0 answers
47 views

How do tidal forces on incomplete geodesics determine extendability?

0 votes
1 answer
48 views

Why are all the possible permutationss in the perturbative $S$-matrix calculations added together?

0 votes
0 answers
35 views

Eigenfunctions of the Dirac Hamiltonian with time-dependent electromagnetic potential

0 votes
0 answers
28 views

Understanding Wave Function Evolution in the Dirac Equation for Different Geometries