mass operator

mass operator

[′mas ′äp·ə‚rād·ər]
(quantum mechanics)
An operator which is added to the Lagrangian in a quantized field theory in order to eliminate certain infinite quantities, and whose sum with the mechanical mass gives the observed mass.
References in periodicals archive ?
We point out that, in (5), we introduce the following expression for electron passive gravitational mass operator:
Note that, in (6), the first term is the bare electron mass, [m.sub.e], and the second term corresponds to the expected electron energy contribution to the mass operator, whereas the third term is the nontrivial virial contribution to the gravitational mass operator.
Linear response of a non-equilibrium system to external mechanical perturbation is treated with Green's functions and the mass operator method.
Our second result is a breakdown of the equivalence between passive gravitational mass and energy at a microscopic level for stationary quantum states due to the fact that the mass operator does not commute with energy operator, taken in the absence of gravitational field.
where we introduce passive gravitational mass operator of an electron to be proportional to its weight operator in a weak centrosymmetric gravitational field (2),
(9) corresponds to the bare electron mass, me, the second term corresponds to the expected electron energy contribution to the mass operator, whereas the third nontrivial term is the virial contribution to the mass operator.
(9), the expectation value of the gravitational mass operator per one electron is
First of all, we recall that the mass operator (9) does not commute with electron energy operator, taken in the absence of gravitational field.
Another supermarket retailer in a rural area says he's hoping "that higher gas costs will decrease trips out of town to Wal-Mart." Another supermarket operator reports that "customer counts and transactions are down, but average order size is up, which indicates customers are making fewer trips to the stores." Overall, says a mass operator, "the impact will be slow but significant."
Rockenbauer shares that a multi-particle theory based on the strong and weak interaction can in all probability describe the quantum states where these properties mentioned are given as expectation values of the charge and rest mass operators.