Arnold Neumaier

less info
meta site favicon meta user | stack exchange network profile network profile

431 Answers

newest activity votes
5
What's the difference between space and time?
8
Canonical Commutation Relations
4
Is the step of analytic continuation unavoidable or can you model around it?
3
Why don't we use the concept of force in quantum mechanics?
2
Why the Hamiltonian and the Lagrangian are used interchangeably in QFT perturbation calculations
3
Time evolution of a reduced density matrix
5
What makes an equation an 'equation of motion'?
3
What is the meaning of the word “particle” in particle physics?
3
How quarks converted into leptons
2
Derivation of Schrodinger equation for a system with position dependent effective mass
4
Relativistic Hamiltonian Formulations
2
Is the momentum operator well-defined in the basis of standing waves?
4
Scalar product between Fock states
0
Physical intuition for higher order derivatives
1
Is there a default notation for 4-vectors while handwriting?
2
How to find exponential values
3
Does the canonical commutation relation fix the form of the momentum operator?
0
What is the expectation value of the number operator when the vacuum has a VEV?
2
Discontinuities and nondifferentiability in thermodynamics
1
What's the difference between two Hydrogen atoms?
3
Irreversibility and the Fermi golden rule
1
Born rule and unitary evolution
2
Does matter with negative mass exist?
3
In classical mechanics, are complex numbers unphysical?
3
What is the physical interpretation of the S-matrix in QFT?
0
Who are some prominent groups or individuals pursuing realist physics?
2
What's the motivation behind the action principle?
4
Help an aspiring physicists what to self-study
1
Classical limit of quantum mechanics
2
What does Metric Transitivity Mean?
1 2 3 4 5 … 15