HOW STRONG CAN THE COUPLING OF LEPTONIC PHOTONS BE

Consequences of the possible existence of leptonic photons are conside red for a range of values of leptonic charge. In the case of a strong Coulomb-like leptonic repulsion between electrons the existence of ord inary condensed matter is impossible: antineutrinos cannot neutralize this destructive repulsion. The upper limit of leptonic charge is infe rred from the Eotvos type experiments. If however there exist light st able scalar bosons with leptonic charge (e.g. singlet antisneutrinos) they may neutralize the electron repulsion. Possible experimental mani festations of such leptonic bosons in gases and condensed matter are b riefly discussed.