On the Hadamard condition on Robertson-Walker spacetime
Mathematical Physics
2007-05-23 v1 math.MP
Abstract
Using construction of adiabatic vacuum states of a free scalar field on Robertson-Walker spacetime, using results of Luders and Roberts we prove that validity of the Hadamard condition implies smoothness of the scale factor.
Cite
@article{arxiv.math-ph/0609007,
title = {On the Hadamard condition on Robertson-Walker spacetime},
author = {Jan Tichavsky},
journal= {arXiv preprint arXiv:math-ph/0609007},
year = {2007}
}
Comments
9 pages, no figures