  In this paper the solution of the hyperbolic Klein-Gordon thermal equation
are obtained and discussed. The analytical form of the solution - Green
functions are calculated for one and three dimensional cases. It is shown that
only in three dimensional case the undisturbed, with one value of the velocity,
thermal wave can be generated by attosecond laser pulses. The conductivity for
the space-time inside the atom is calculated and the value sigma_0=10^6
1/(Omega m) is obtained.
  Key words: Attosecond laser pulses; Klein-Gordon equation; Green functions.
