Time of arrival operator in the momentum space
arXiv:2202.10393 · doi:10.1016/S0034-4877(23)00037-X
Abstract
It is shown that in presence of certain external fields a well defined self-adjoint time operator exists, satisfying the standard canonical commutation relations with the Hamiltonian. Examples include uniform electric and gravitational fields with nonrelativistic and relativistic Hamiltonians. The physical intepretation of these operators is proposed in terms of time of arrival in the momentum space.
arXiv commentFinal version. Bad typos corrected
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