  Field localization on 2-dim extra space is considered in the framework of
f(R) gravity. It is shown that an interference of local matter energy
distribution and a metric of the extra space form a point-like defect - 4-dim
brane. The energy-momentum of the brane depends on initial conditions that
could lead to the cosmological $\Lambda$ term being arbitrarily small.

General Relativity and Quantum Cosmology