Two observers calculate the trace anomaly

Abstract

We adapt a calculation due to Massacand and Schmid to the coordinate independent definition of time and vacuum given by Capri and Roy in order to compute the trace anomaly for a massless scalar field in a curved spacetime in 1+1 dimensions. The computation which requires only a simple regulator and normal ordering yields the well-known result $\frac{R}{24\pi }$ in a straightforward manner.

RevTeX, 13 pages, some typos corrected and an appendix added, this is the version to appear in Class. and Quantum Gavity

Cited by in corpus (4)

• Casimir Effect in 2D Stringy Black Hole Backgrounds
• Casimir Effect, Achucarro-Ortiz Black Hole and the Cosmological Constant
• Trace Anomaly and Backreaction of the Dynamical Casimir Effect
• Stress Tensors for Instantaneous Vacua in 1+1 Dimensions