In this review we present the problem of time in quantum physics, including a short history of
the problem and the known objections about considering time as a quantum observable …

The progress of the factorization method since the 1935 work of Dirac is briefly reviewed.
Though linked with older mathematical theories the factorization seems an autonomous' …

In single Hilbert space, Pauli's well–known theorem implies that the existence of a self–
adjoint time operator canonically conjugate to a given Hamiltonian requires the Hamiltonian …

We propose a time-of-arrival operator in quantum mechanics by conditioning on a quantum
clock. This allows us to bypass some of the problems of previous proposals, and to obtain a …

We revisit the arguments underlying two well-known arrival-time distributions in quantum
mechanics, viz., the Aharonov–Bohm–Kijowski (ABK) distribution, applicable for freely …

The concept of 'tunnelling time'in the context of quantum particle tunnelling is reviewed.
Various suggestions of linking the tunnelling dynamics with a characteristic time (real or …

We develop a general framework for the construction of probabilities for the time of arrival in
quantum systems. The time of arrival is identified with the time instant when a transition in …

We give a short review of known exact inequalities that can be interpreted as' energy–
time'and'frequency–time'uncertainty relations. In particular we discuss a precise form of …

A relativistic version of the Aharonov-Bohm time-of-arrival operator for spin-0 particles was
constructed by Razavi [Il Nuovo Cimento B 63, 271 (1969) 0369-3554 …

Attosecond ionization experiments have not resolved the question “What is the tunneling
time?”. Different definitions of tunneling time lead to different results. Second, a zero …