SYMMETRIES in PHYSICS

Symmetry and Spontaneous Symmetry Breaking
Selected Groups and Symmetries
Spontaneous Symmetry Breaking
Symmetry vs. Asymmetry - Historical Perspective [1]
Principle of Sufficient Reason (LEIBNIZ)
If there is no sufficient reason for things to happen - then the
original situation does not change
The underlying idea: the presence of symmetry guarantees that
one choice is as good as any other - thus nothing happens
Pierre CURIE (’Sur la symétrie dans les phénomènes physiques’)
For a phenomenon to take place - an absence of symmetry is
needed - the asymmetry gives the origin to phenomena
If one phenomenon is a ’cause’ and another ’result’ - the symmetry
of cause must be higher than the symmetry of the result
Jerzy DUDEK
SYMMETRIES in PHYSICS