The expansion of operators as ordered power series in the annihilation and creation operators
a and a† is examined. It is found that normally ordered power series exist and converge …

The problem of expanding a density operator ρ in forms that simplify the evaluation of important
classes of quantum-mechanical expectation values is studied. The weight function P (α) …

Purpose: This article investigates how older Americans leave their career jobs and estimates
the extent of intermediate labor force activity (bridge jobs) between full-time work on a …

Purpose of the Study: Older Americans contemplating retirement today face a very different
economic environment than prior cohorts did. This article examines whether the retirement …

The mathematical methods that have been used to analyze the statistical properties of
boson fields, and in particular the coherence of photons in quantum optics, have their …

This paper examines the extent to which job satisfaction, employee engagement, and
satisfaction with work–life balance are influenced by changes in the macroeconomy. Data on …

Nuclear factor-κB (NF-κB) is a ubiquitous transcription factor that regulates multiple aspects
of cancer formation, growth, and treatment response. Glioblastoma (GBM), the most common …

The magnitude of future climate change depends substantially on the greenhouse gas
emission pathways we choose. Here we explore the implications of the highest and lowest …

… Cahill is a research economist at the Sloan Center on Aging &Work at Boston College,
Chestnut Hill, MA; Joseph F. Quinn is the James P. McIntyre Professor of Economics in the …

… Sy the de6nition of the trace we have where EI, is the energy of a photon in mode k. To prove
this, we note that quantities like (2.18) must be timeindcpendent if p is stationary. From this …