Spherical electrons, gravitons, banes, super-symmetry
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Physics - Sub-Atomic Particles etc twitter
Part of the laser system used by scientists at Imperial College to measure the shape of the electron.
May 25, Physics/General Physics Schematic diagram of the pulsed molecular beam apparatus.
In particle physics , supersymmetry (often abbreviated SUSY ) is a proposed symmetry of nature relating two basic classes of elementary particles: bosons , which have an integer-valued spin , and fermions , which have a half-integer spin.
At last the cautious BBC voices physicists’ majority view that Gravity is not explained by the “Standard Model” of physics (Pallab Ghosh 25 May 2011) – meaning ‘gravitons’ are unreal – in an offhand comment on the electron-is-round story. Modern physics is trying to get to grips with a finite size electron.
In physics , the graviton is a hypothetical elementary particle that mediates the force of gravitation in the framework of quantum field theory .
In physics , the graviton is a hypothetical elementary particle that mediates the force of gravitation in the framework of quantum field theory . If it exists, the graviton is expected to be massless (because the gravitational force appears to have unlimited range) and must be a spin -2 boson . The spin follows from the fact that the source of gravitation is the stress-energy tensor , a second-rank tensor (compared to electromagnetism 's spin-1 photon, the source of which is the four-current , a first-rank tensor).
The high concentration of the graviton near the brane—let's call the brane where gravity is localized the Planck brane —leads to a natural solution to the hierarchy problem in a universe with two branes.
The Question (Submitted July 26, 2006) Since string theory implies up to 11 dimensions, could dark matter be gravitons leaking from other dimensions into ours?
In addition to the incredulity of their colleagues, Dr. Lisa Randall of Princeton University and Dr.
Artist's Representation Of P-Branes floating in Hyperspace