On p‐Adic Sector of Open Scalar Strings and Zeta Field Theory

We consider construction of Lagrangians which may be suitable for description of p‐adic sector of an open scalar string. Such Lagrangians have their origin in Lagrangian for a single p‐adic string and they contain the Riemann zeta function with the d’Alembertian in its argument. However, investigation of the field theory with Riemann zeta function is interesting in itself as well. We present a brief review and some new results.