DUAL NATURE OF RICCI SCALAR AND CREATION OF SPINLESS PARTICLES

Manifestation of Ricci scalar like a matter field as well as a geometr ical field, at high energy, has been noted earlier [9]. Here, its inte raction, with another scalar field is considered in four-dimensional c urved space-time. This interaction leads to the production of a large number of pairs of spinless particle-antiparticle due to expansion of the early universe in the vacuum state (provided by temperature depend ent Coleman-Weinberg like potential for Ricci field), where spontaneou s symmetry breaking takes place.