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Many pieces of the Standard Model of physics are non-chiral, which is traceable to anomaly cancellation in chiral theories. Quantum chromodynamics is an example of a vector theory, since both chiralities of all quarks appear in the theory, and couple to gluons in the same way.
Chirality (/ k aɪ ˈ r æ l ɪ t i /) is a property of asymmetry important in several branches of science. The word chirality is derived from the Greek χείρ (kheir), "hand", a familiar chiral object. An object or a system is chiral if it is distinguishable from its mirror image; that is, it cannot be superposed (not to be confused with ...
Non-chiral extensions of the Standard Model with vectorlike split-multiplet particle spectra which naturally appear in the higher SU(N) GUTs considerably modify the desert physics and lead to the realistic (string-scale) grand unification for conventional three quark-lepton families even without using supersymmetry (see below). On the other ...
For a non-chiral nematic liquid crystal, is commonly taken to consist of three ... The Physics of Liquid Crystals (2nd ed.). Oxford University Press.
At low energies, type IIA string theory is described by type IIA supergravity in ten dimensions which is a non-chiral theory (i.e. left–right symmetric) with (1,1) d=10 supersymmetry; the fact that the anomalies in this theory cancel is therefore trivial.
Fig. 1 The vector field of two-dimensional magnetic skyrmions: a) a hedgehog skyrmion and b) a spiral skyrmion. In physics, magnetic skyrmions (occasionally described as 'vortices,' [1] or 'vortex-like' [2] configurations) are statically stable solitons which have been predicted theoretically [1] [3] [4] and observed experimentally [5] [6] [7] in condensed matter systems.
It is possible that other imbalances have been caused by breaking of a chiral law of this kind. Many physicists suspect that the fact that the observable universe contains more matter than antimatter is caused by a chiral anomaly. [1] Research into chiral symmetry breaking laws is a major endeavor in particle physics research at this time.
In physics, a parity transformation (also called parity inversion) is the flip in the sign of one spatial coordinate.In three dimensions, it can also refer to the simultaneous flip in the sign of all three spatial coordinates (a point reflection):