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Top Questions
8
votes
QFT vacuum and the zero point energy
quantum-field-theory
vacuum
asked Jan 31, 2022 at 12:53
physics.stackexchange.com
6
votes
Boundedness of a Hamiltonian and when does a Hamiltonian have a spectrum?
quantum-mechanics
hilbert-space
potential
hamiltonian
eigenvalue
asked Nov 28, 2022 at 12:37
physics.stackexchange.com
6
votes
Different Hilbert spaces in quantum mechanics
quantum-mechanics
hilbert-space
asked Sep 26, 2020 at 21:25
physics.stackexchange.com
5
votes
When does QFT perturbation theory stop being valid?
quantum-field-theory
path-integral
perturbation-theory
partition-function
non-perturbative
asked Mar 22, 2021 at 13:46
physics.stackexchange.com
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