Relating a small decrease of (m_p/m_e) with cosmological time to a small cosmological constant
arXiv:astro-ph/0703323
Abstract
The possible small variation downward by about , of the ratio of the proton mass to the electron mass, over cosmological time is related to the decrease with time of a small vacuum expectation value for a Goldstone-like pseudoscalar field. The initial vacuum expectation value controls the magnitude of a very small cosmological constant.
8 pages, appendix added