Recent content by smith345

what are the properties that can define the inner product? I know this only that inner product is a generalization of the dot product. tell me more about this

According to Noether's theorem, a symmetry in nature corresponds to a conserved quantity. For example, the homogeneity of space (invariance under spatial translations) corresponds to conservation of the linear momentum vector.

I know what causes radioactive decay. And I REALLY understand quantum actions.

The "BPS Multiplet" you are referring to would correspond to what you get if you act on the stack of branes with one of the unbroken supersymmetry transformations. This would probably give you things like translations and rotations of the stack, etc.

An important property of all dark matter is that it behaves like and is modeled like a perfect fluid, meaning that it does not have any internal resistance or viscosity.

Nuclei are made up of protons and neutron, but the mass of a nucleus is always less than the sum of the individual masses of the protons and neutrons which constitute it. The difference is a measure of the nuclear binding energy which holds the nucleus together. This binding energy can be...

Nonrelativistic bound states are studied using an effective field theory. Large logarithms in the effective theory can be summed using the velocity renormalization group. For QED, one can determine the structure of the leading and next-to-leading order series for the energy, and compute...

antiparticles are produced in pairs in high-energy proton-antiproton collisions. This computer representation shows the decay products of the short-lived candidate particle produced in a collision. The decay products are used to identify the B_s mesons produced in the collision. (Courtesy of...

Antiparticles look and behave just like their corresponding matter particles, except they have opposite charges. For instance, a proton is electrically positive whereas an antiproton is electrically negative. Gravity affects matter and antimatter the same way because gravity is not a charged...