Qmechanic

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I'm a theoretical physicist.


500 Answers

newest activity votes
1
Commutator with a square root
1h ago
1
Principle of Least Action via Finite-Difference Method
1d ago
6
How do I derive the Lorenz gauge from the continuity equation?
jun 10 at 22:07
3
Composition of squeeze operators?
jun 7 at 21:51
4
Noether charge of local symmetries
may 28 at 23:36
0
Higher order covariant Lagrangian
jun 5 at 19:00
5
No closed orbits for a Newtonian gravitational field in 4 spatial dimensions
may 30 at 19:14
4
Problem counting spin states
jun 3 at 0:51
1
Infinite Potential Well Energy for Piece-wise Constant Wave Function
jun 2 at 16:00
4
How do I show that there exists variational/action principle for a given classical system?
jan 31 '12 at 12:59
2
Hamiltonian equations: can I divide a solution of motion for a constant?
may 31 at 19:39
1
Why is this not a realisable operation on a quantum system?
may 24 at 12:58
2
Gauge fields and strings: Loop equations
may 26 at 23:24
6
Hilbert space of harmonic oscillator: Countable vs uncountable?
may 16 at 22:23
4
Quantum master equation in the Batalin-Vilkovisky formalism
may 25 at 17:25
1
Geodesic equations
may 14 at 20:47
3
Differential equation (Greens function) satisfied by the kernel using path integrals
may 22 at 20:50
3
Is there a “covariant derivative” for conformal transformation?
may 23 at 14:36
0
Bohr-sommerfeld quatnization from the WKB approximation
may 23 at 20:57
2
Calculating the the kernel using path integrals for quadratic lagrangians
may 22 at 11:58
4
When are there enough Casimirs?
may 17 at 21:32
3
Coherent $U(N)$ intertwiners in Loop Quantum Gravity (LQG) and a measure on the Grassmannian
may 19 at 21:29
0
Finding Hamilton's equations given a Hamiltonian
may 18 at 9:48
1
Topological vs. non-topological noetherian charges
may 15 at 22:36
2
Peculiar Hamiltonian Phase space
may 14 at 19:02
2
Motivation for Wigner Phase Space Distribution
may 11 at 20:00
2
Expanding two-variable function $f(x,y)$ over the complete sets $\{ g_{i}(x) \}$ and $\{ h_{j}(y) \}$
may 12 at 15:21
1
Evaluating the Ricci tensor effectively
may 11 at 10:09
2
Derivation of the volume element (which uses the metric tensor)?
may 9 at 20:24
2
Coherent State, Unitary Operators, Harmonic Oscillator
may 6 at 23:10
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