force particles. Which are force carriers or messenger particles of underlying fields, such as photons mediating the interaction of electric charges, gluons mediating the interaction of color charges, hypothetical gravitons for gravitation, or virtual gauge bosons interacting with matter particles, fermions, attracting and repelling each other.
If electroweak unification occurs just at around 100 GeV and grand unification, at 1016 GeV, the unification of the GUT force with gravity is expected at the Planck energy, with a proto force particle, say, the prime force particle of God, at 1019 GeV.
Some theories beyond the Standard Model include the modern cosmology forces: an inflationary force and dark energy, a hypothetical fifth force, the search for such a force is an ongoing line of experimental research in physics. In the super symmetry theories, there are scalar fields such as quintessence or moduli, dynamic quantities whose energy density can vary in time and space, acquiring their masses through super symmetry breaking to exchange new forces. New forces might account for the recent discovery of the universe expansion accelerating, or gravitational repulsion, a nonzero cosmological constant, vacuum energy, some changes of general relativity, as well as CP violations, dark matter, dark flow, or dark energy, having a strong negative pressure (acting inversely repulsively), with a view to come to a dynamically reversible cyclic model of the universe.
In fact, there might exist a reversed, or inverted, negative form of matter, with negative gravity, which qualitatively different to antimatter, materials composed of antiparticles, invisible to us as the curving of space, but detectable through its anti-gravitational effects of repulsion. This condition could be referred to as Dark Matter existing in a 5th dimensional hyperspace, being part of space-time's matter and equal in amount to ordinary, baryonic matter. Then inverted space-time becomes negative hyperspace and formally described by imaginary numbers, with all the nonstandard consequences as to its properties and behavior. There is a cosmological speculation as to a real composition of the universe. The standard model of cosmology indicates that dark energy contributes 68.3% of the total energy in the whole observable universe, with its density as low as (~ 7 × 10-30 g/cm3), uniformly occupying empty space and having negative pressure (acting repulsively), while the mass–energy of dark matter makes 26.8%, ordinary (baryonic) matter contribute 4.9%, plus the rest components, such as neutrinos and photons, giving in a negligible amount. Other observations are figuring a universe made up 71.3% of dark energy and 27.4% of a combination of dark matter and baryonic matter.
Whatever, knowing the nature of dark energy and dark matter, as the fundamental cosmological constant and quintessence, how it all interacts with the ordinary matter, as subjected to numbers in terms of extension, change, force, mass, energy and radiation, is most critical for a single theory of the universe
Since, ultimately, four or five main force-interactions, strong, electromagnetic, weak, gravitational, and dark, would combine into the proto force, the Faraday’s universal force, in the ToE, like as in a super string theory, at the beginning of the universe (up to 10-43 seconds after the Big Bang), the four fundamental forces were once a single fundamental force. One might add up here a hypothetical fifth fundamental force of nature, “dark force of dark energy and matter”, theorizing as a force pushing the galaxies aside accelerating the expansion of the universe up to half of the age of the universe (7,5 billion years) (Krasznahorkay, A. J. et al. Physical Review Letters 116, 042501 (2016)).
That might implies that all the fundamental force-interactions might come out as different manifestations of the prime natural force, the prime mover, the first cause of all changes in the universe, including the original event of the hypothetical Big Bang, the singularity referring to the early hot, dense state considered the "birth" of the universe.
So, the final cause of natural science of physics is, in the most general way, to formulate a system of comprehensive principles uniting and explaining all physical phenomena, physical causes and forces, mechanical, gravitational, thermal, electromagnetic, and nuclear forces, weak and strong.
The very universality and convertibility of natural forces and the reversible relationships of physical causes and thence their inherent integrity inspired Faraday, Maxwell and Einstein to seek unification of all the physical processes by a single set of physical laws.
The very universality and symmetry of interactions of natural forces, or reversibility of physical processes, has inspired great physical minds to discover the basic laws of physics, as symmetry principles and conservation laws, and formulate the quantum theory and relativity principle, as Einstein’s matter-energy relationship or space-time relationship.
The very universality of conservation laws of interactions of natural forces, as gravity, nuclear interactions, or electromagnetic interactions, has inspired to discover one of the basic principles of nature, that the laws of physics remains valid in all places and times in the universe. Regardless of all the changes taking place with physical systems, of any scale and complexity, basic physical quantities, as mass, momentum, mass-energy, or baryon number, remain unchangeable or constant.
But, regardless that the great ideas of forcible interactions, process reversibility, energy and effect convertibility have been guiding physical science since its origination, neither has been properly formulated as the fundamental principle and general law of nature and the universe.
To contribute, we introduced the concepts of
universal force-relationship
convertibility laws
reversibility principles
They are introduced as the highly integrative principles of physical sciences, especially, the natural science of physics and theoretical physics, as the most fundamental laws of nature and the universe (Новик И.Б., Абдуллаев А.Ш. "Введение в информационный мир", М. Наука, 1991, in Russian; see Supplement: Encyclopedic Knowledge Base in Physics).
As a result, the interactions of natural forces are formulated in the new terms of force-relationships, covering the current constructs forces, force lines, force-interactions, or force-fields. Forces are constructed as symmetrical force-relations, forceful interrelationships, efficient interrelations, powerful interrelationships, energetic interconnections, effective mapping, or forcible interactions producing physical changes and effects.
Natural forces are engines of the universe and being studied much less than the whole subject deserves. It is forces, their actions and interactions, determine the structure of the universe at all its levels, microscopic or macroscopic or cosmological. We know little about forces, their nature and properties, kinds and laws and relationships, some even hypothesizing that in unified field theories “all forces are fictitious”, or pseudo forces. Most references here traditionally go to the use of Newton's Second Law for a definition of force, which was disparaged as essentially a mathematical truism by notable physicists, philosophers and mathematicians looking for a more substantive definition of the concept of force, as the principle of all physical science.
Still, applying symmetry to forces, the third law pinpointed the key feature of forces: all forces are interactions between different bodies. That means that they have the nature of interrelationships of power, efficiency and energy, what could be generalized as a symmetrical force-relationship. In other words, there is no such thing as a unidirectional force or a force that acts on only one body, in one progressive direction. Whenever a body exerts a force F on another body, the other one exerts a force −F on the first body, now in the regressive direction. F and −F are equal in magnitude BUT opposite in direction, having both magnitude and direction as vector quantities.
This action-reaction law, with F called the direct "action", or progressive force, and −F the reverse "reaction", retrogressive or inverse force, is making a decisive inductive case
