Strongly symmetric matter
Encyclopedia
Strongly symmetric matter: If the predictions of supersymmetry
and more so, string theory
are correct then during the time of the Planck Epoch
(10−43 seconds after the Big Bang
) all four fundamental forces were of equal strength and united into a single fundamental force. However, shortly thereafter, during the grand unification epoch
(10−33 seconds after the Big Bang) gravity began to separate from the other three forces of electromagnetism, the strong, and weak nuclear force. After gravity had separated, the strong nuclear force was quick to follow and separated itself from the electroweak force, ending the epoch. The phrase strongly symmetric matter refers to the united forces present during this time.
Supersymmetry
In particle physics, supersymmetry is a symmetry that relates elementary particles of one spin to other particles that differ by half a unit of spin and are known as superpartners...
and more so, string theory
String theory
String theory is an active research framework in particle physics that attempts to reconcile quantum mechanics and general relativity. It is a contender for a theory of everything , a manner of describing the known fundamental forces and matter in a mathematically complete system...
are correct then during the time of the Planck Epoch
Planck epoch
In physical cosmology, the Planck epoch , named after Max Planck, is the earliest period of time in the history of the universe, from zero to approximately 10−43 seconds , during which, it is believed, quantum effects of gravity were significant...
(10−43 seconds after the Big Bang
Big Bang
The Big Bang theory is the prevailing cosmological model that explains the early development of the Universe. According to the Big Bang theory, the Universe was once in an extremely hot and dense state which expanded rapidly. This rapid expansion caused the young Universe to cool and resulted in...
) all four fundamental forces were of equal strength and united into a single fundamental force. However, shortly thereafter, during the grand unification epoch
Grand unification epoch
In physical cosmology, assuming that nature is described by a Grand unification theory, the grand unification epoch was the period in the evolution of the early universe following the Planck epoch, starting at about 10−43 seconds after the Big Bang, in which the temperature of the universe was...
(10−33 seconds after the Big Bang) gravity began to separate from the other three forces of electromagnetism, the strong, and weak nuclear force. After gravity had separated, the strong nuclear force was quick to follow and separated itself from the electroweak force, ending the epoch. The phrase strongly symmetric matter refers to the united forces present during this time.