Alex Nelson's user avatar
Alex Nelson's user avatar
Alex Nelson's user avatar
Alex Nelson
  • Member for 10 years, 4 months
  • Last seen this week
17 votes
Accepted

In what sense is the renormalization group equation a group?

16 votes
Accepted

Three integrals in Peskin's Textbook

16 votes

What's wrong with the square root version of the Klein-Gordon equation?

14 votes

Is it true that the Schrödinger equation only applies to spin-1/2 particles?

11 votes

What are examples of Lagrangians that not of the form $T-U$?

10 votes

When is Lebesgue integration useful over Riemann integration in physics?

9 votes

Linear algebra for quantum physics

9 votes
Accepted

ADM Hamiltonian formalism and Quantum gravity

8 votes
Accepted

Lorentz invariance of the 3 + 1 decomposition of spacetime

8 votes
Accepted

Request for Reference: BRST formalism/transformations

8 votes
Accepted

Wick Rotation in Curved space

6 votes
Accepted

Relation between Dirac's generalized Hamiltonian dynamics method and path integral method to deal with constraints

6 votes

In classical mechanics, are complex numbers unphysical?

5 votes

Discretization of action in path integral

5 votes
Accepted

What experiment would disprove loop quantum gravity?

5 votes
Accepted

Is causality a total order?

4 votes
Accepted

"Killing leaves" in General Relativity?

4 votes

Why is there no gauge-invariant local operator in GR?

4 votes

Is it in general true that $\nabla_\mu T^{\mu\nu}=0$ implies the matter equations of motion?

4 votes
Accepted

A Conceptual Problem With the Field Equations of General Relativity

4 votes
Accepted

Ordering Ambiguity in Quantum Hamiltonian

3 votes
Accepted

The (co)algebra for the (co)monad of a light switch

3 votes
Accepted

Example of two linearly independent, nowhere vanishing vector fields in $\mathbb{R}^{2}$

3 votes

Canonical quantum gravity

3 votes

Resources on constrained Hamiltonian field theory

3 votes

Is there a "square root" version of the Einstein field equation?

3 votes

What is meant by a "c-number"?

3 votes
Accepted

Can the universe's topology change during its evolution?

2 votes

Understanding EFE: RHS linear, LHS not?

2 votes
Accepted

When does 'naively' quantizing classical constraints work?