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theoretical physicist, striving for as complete understanding of the world as possible

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Mar 26, 2021

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Mar 1, 2019
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Is the Hilbert space spanned by both bound and continuous hydrogen atom eigenfunctions?

Feb 19, 2015

Bounded operator - definition?

Feb 12, 2015

Scattering states of Hydrogen atom in non-relativistic perturbation theory

Mar 9, 2015

How to connect these two formulations regarding the need for a density matrix in quantum mechanics?

Feb 26, 2015

Why are the zeroth order terms in degenerate perturbation theory the eigenstates of the perturbing Hamiltonian?

Feb 28, 2015

Separability of the Hilbert space: countable orthonormal basis vs. continuous spectrum

Jun 24, 2015

Non-degenerate or degenerate perturbation theory for a non-degenerate level of a system with other levels degenerate?

Feb 28, 2015

What exactly implies the need of quantum mechanics for self-adjoint and not only symmetric operators? [duplicate]

May 3, 2015

Notions of "confined" and "metastable" states?

Mar 3, 2015

How does independence of two systems follow from the fact that they are both completely described?

Feb 21, 2015