Field interaction and anomalies in astrophysical and cosmological phenomena

Abstract

The WKB expansion of bosonic and fermionic interacting fields in general curved spacetimes is computed. The explicit expression of the loss of energy in terms of macroscopic quantities like densities and velocities, according to the corresponding spinorial structure, is obtained. Analyzing experimental data of the PSR 1913+16 pulsar, we propose an interpretation of the rotational energy decay and estimate the possible bosonic-fermionic interaction strength capable of producing it. We use these results to discuss some cosmological anomalies related to red-shifts and energy decays giving alternative interpretations.