Arxiv accepts papers in any field.
Where are you getting that from? The front page says:
arXiv is an e-print service in the fields of physics, mathematics, non-linear science, computer science, quantitative biology, quantitative finance and statistics.
Also there is this:
While arXiv serves a variety of scientific communities, not all subjects are currently covered.
Point taken.
Where are you getting that from? The front page says:
Also there is this:
Point taken.