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3.1 Supersymmetric extensions of the Standard Model.
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2.4 Supersymmetry in condensed matter physics.2.3 Supersymmetry in quantum field theory.2.1 Extension of possible symmetry groups.However, no supersymmetric extensions of the Standard Model have been experimentally verified. Supersymmetry has also been applied to high energy physics, where a supersymmetric extension of the Standard Model is a possible candidate for physics beyond the Standard Model. Supersymmetry has various applications to different areas of physics, such as quantum mechanics, statistical mechanics, quantum field theory, condensed matter physics, nuclear physics, optics, stochastic dynamics, astrophysics, quantum gravity, and cosmology. More complex supersymmetry theories have a spontaneously broken symmetry, allowing superpartners to differ in mass. In the simplest supersymmetry theories, with perfectly " unbroken" supersymmetry, each pair of superpartners would share the same mass and internal quantum numbers besides spin. For example, if the electron exists in a supersymmetric theory, then there would be a particle called a "selectron" (superpartner electron), a bosonic partner of the electron. In supersymmetry, each particle from one class would have an associated particle in the other, known as its superpartner, the spin of which differs by a half-integer. Supersymmetry is a spacetime symmetry between two basic classes of particles: bosons, which have an integer-valued spin and follow Bose–Einstein statistics, and fermions, which have a half-integer-valued spin and follow Fermi–Dirac statistics. In theoretical and mathematical physics, any theory with this property has the principle of supersymmetry ( SUSY). In a supersymmetric theory the equations for force and the equations for matter are identical. JSTOR ( June 2019) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.