  New model is suggested, where the Casimir mechanism is the source of masses
and conformal symmetry breaking at the Planck epoch in the beginning of the
Universe. The mechanism is the Casimir energy and associated condensate, which
are resulted from the vacuum postulate and normal ordering of the conformal
invariant Hamiltonian with respect to the quantum elementary field operators.
It is shown that the Casimir top-quark condensate specifies the value of the
Higgs particle mass without involving the Higgs tachyon mass, which is put
equal to zero. The Casimir mechanism yields another value of the coupling
constant for the self-interaction of scalar field than the standard model does.
