Physics Week
May 11, 2010


According to recent research published in the journal Astrophysics
and Space Science, "We address gravitation and inertia in the
framework of a general gauge principle (GGP) which accounts for the
gravitation gauge group G ® generated by a hidden local internal
symmetry implemented on the flat space. Following the method of
phenomenological Lagrangians, we connect the group G ® to a non-linear
realization of the Lie group of the distortion G (D) of the local
internal properties of six-dimensional flat space, M (6), which is
assumed as a toy model underlying four-dimensional Minkowski space."

"We study the geometrical structure of the space of parameters and
derive the Maurer-Cartan's structure equations. We treat distortion
fields as Goldstone fields, to which the metric and connection are
related, and we infer the group invariants and calculate the conserved
currents. The agreement between the proposed gravitational theory
and available observational verifications is satisfactory. Unlike
the GR, this theory is free of fictitious forces, which prompts us to
address separately the inertia from a novel view point. We construct
a relativistic field theory of inertia, which treats inertia as a
distortion of local internal properties of flat space M (2) conducted
under the distortion inertial fields. We derive the relativistic
law of inertia (RLI) and calculate the inertial force acting on the
photon in a gravitating system. In spite of the totally different
and independent physical sources of gravitation and inertia, the RLI
furnishes a justification for the introduction of the Principle of
Equivalence. Particular attention is given to the realization of the
group G ® by the hidden local internal symmetry of the abelian group
U (loc)=U(1) (Y) xdiag[SU(2)], implemented on the space M (6). This
group has two generators, the third component T (3) of isospin and
the hypercharge Y, implying Q (d) =T (3)+Y/2, where Q (d) is the
distortion charge operator assigning the number -1 to particles, but +1
to anti-particles. This entails two neutral gauge bosons that coupled
to T (3) and Y. We address the rearrangement of the vacuum state in
gravity resulting from these ideas. The neutral complex Higgs scalar
breaks the vacuum symmetry leaving the gravitation subgroup intact,"
wrote G. Terkazarian and colleagues.

The researchers concluded: "The resulting massive distortion field
component may cause an additional change of properties of the spacetime
continuum at huge energies above the threshold value."

Terkazarian and colleagues published their study in Astrophysics and
Space Science (Gravitation and inertia; a rearrangement of vacuum in
gravity. Astrophysics and Space Science, 2010;327(1):91-109).

For additional information, contact G. Terkazarian, Byurakan
Astrophysics Observ, Byurakan 378433, Armenia.

The publisher's contact information for the journal Astrophysics and
Space Science is: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht,