Andrew McAddams's user avatar
Andrew McAddams's user avatar
Andrew McAddams's user avatar
Andrew McAddams
  • Member for 10 years, 6 months
  • Last seen more than 9 years ago
12 votes
Accepted

Proving that the hermitian conjugate of the product of two operators is the product of the two hermitian congugate operators in opposite order

11 votes

How can helicity be conserved but chirality not?

11 votes
Accepted

Is there a relationship between the energy of a photon and the energy of an electromagnetic wave?

11 votes
Accepted

Lorentz transformations for scalar fields in QFT --- Peskin and Schroder

10 votes

Deriving the Coulomb force equation from the idea of virtual photon exchange?

8 votes
Accepted

How are Feynman rules derived, in general?

8 votes

How to get Gell-Mann matrices?

6 votes
Accepted

How is Fermat's least time principle proven?

6 votes

A whole lot of doubts on Lorentz representation

5 votes

In QFT, why do fermions have to anticommute in order to insure causality?

5 votes
Accepted

Mass term in the Lagrangian

5 votes

Is there any difference between massless Dirac fermions and Weyl fermions?

5 votes

Can a third type of electrical charge exist?

5 votes
Accepted

Glashow-Weinberg-Salam mass terms

4 votes

How to prove explicitly that by including Dirac fermions into the Einstein-Hilbert action we make torsion to be non-zero?

4 votes

Why is an electron negatively charged, and what is the difference between negative and positive charges?

4 votes
Accepted

Time reversal and parity symmetry

4 votes

Adjoint of Gamma Matrices - Dirac

3 votes

Gauge-fixing of an arbitrary field: off-shell & on-shell degrees of freedom

3 votes

Spin-statistics theorem proof details

3 votes
Accepted

Complex Dirac field in antiparticle description

3 votes
Accepted

Motivation for spinors

3 votes

Weak interaction violate charge conjugate

3 votes

Nature of Fields in QFT

3 votes

Why do the $1/2$ factor appear in the Majorana mass Lagrangian?

3 votes
Accepted

Quantum field theory: field operators in terms of creation/annihilation operators

3 votes
Accepted

Fermion Self-Interaction

3 votes
Accepted

Particles Associated With Gravitational Waves

3 votes
Accepted

Can an elementary particle be reduced to its properties?

2 votes
Accepted

No need for spin?