Title: Giant Unification Theory of the Grand Unification and Gravitation Theories,
Abstract: Because the grand unification theory of gauge theories of strong, weak and
electromagnetic interactions is based on principal bundle theory, and
gravitational theory is based on the tangent vector bundle theory, so people
cannot unify the these four basic interactions in principal bundle theory. This
Letter discovers and gives giant unification theory of the grand unification
theory and gravitation theory, i.e., the giant unification theory of strong,
weak, electromagnetic and gravitational interactions according to the general
fiber bundle theory, symmetry, quantitative causal principle (QCP) and so on.
Consequently, the research of this Letter is based on the rigorous scientific
bases of mathematics and physics. The Lagrangians of the well-known fundamental
physics interactions are unifiedly deduced from QCP and satisfy the gauge
invariant principle of general gauge fields interacting with Fermion and/or
boson fields. The geometry and physics meanings of gauge invariant property of
different physical systems are revealed, and it is discovered that all the
Lagrangians of the well-known fundamental physics interactions are composed of
the invariant quantities in corresponding spacetime structures. The
difficulties that fundamental physics interactions and Noether theorem are not
able to be unifiedly given and investigated are overcome, the unified
description and origin of the fundamental physics interactions and Noether
theorem are shown by QCP, their two-order general Euler-Lagrange Equations and
corresponding Noether conservation currents are derived in general curved
spacetime. Therefore, using the new unification theory, a lot of research works
about different branches of physics etc can be renewedly done and expressed
simpler with clear quantitative causal physical meanings.