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Janik
  • Member for 2 years, 9 months
  • Last seen more than a month ago
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I'm a PhD student in mathematical foundations of quantum field theory (QFT). My main interests are axiomatic QFT, scattering theory, functional analysis, and operator theory.

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answer
7
Condition to the holomorphy of a complex function
Feb 9, 2023
answer
5
Proof of the Variational Theorem
Mar 8, 2022
answer
5
Translation invariance in QFT
Oct 16, 2022
answer
4
Operator on infinite dimensional Hilbert space: domain and range
Mar 6, 2022
answer
4
What is the Hilbert space in quantum field theory?
Apr 16, 2022
answer
4
Can a set of states be orthonormal, but not complete?
Nov 17, 2022
answer
3
Do operators always give a number after operating?
Apr 28, 2022
answer
3
What are the spaces in which quantum fields belong and how does that affect the hermitian conjugate of $\partial_{\mu}$?
May 12, 2022
answer
3
Visual explanation for $|\psi(-\infty)\rangle^{\text{in}}= \lim_{t\rightarrow -\infty} e^{iH_0 t} e^{-iHt}|\psi\rangle $
Sep 2, 2022
answer
2
In QM, does an algebra containing the Hamiltonian always evolve into itself?
Feb 13, 2023