### Some articles on *amplitudes, amplitude*:

MHV

... In theoretical particle physics, maximally helicity violating

**Amplitudes**... In theoretical particle physics, maximally helicity violating

**amplitudes**are**amplitudes**with n external gauge bosons, where n-2 gauge bosons have a particular helicity and the other two have the opposite helicity ... These**amplitudes**are called MHV**amplitudes**, because at tree level, they violate helicity conservation to the maximum extent possible ... The tree**amplitudes**in which all gauge bosons have the same helicity or all but one have the same helicity vanish ...MHV

... of many gluons, certain classes of

**Amplitudes**- The Parke–Taylor**Amplitudes**... of many gluons, certain classes of

**amplitude**vanish at tree level in particular when fewer than two gluons have negative helicity (and all the rest have positive ... Such**amplitudes**are known as "maximally helicity violating" and have an extremely simple form in terms of momentum bilinears, independent of the number of gluons present The compactness of ... A rigorous derivation of the Parke-Taylor**amplitudes**was given by Berends and Giele ...Atom Vibrations

... waves of different lengths, frequencies, and

... waves of different lengths, frequencies, and

**amplitudes**run through crystalline solids at all times ... frequencies is 1013 Hz, and that of the**amplitudes**is 10-11 m ... The**amplitude**-frequency characteristics of the vibrating spectrum of an alloy can be varied, for example by alloying, to produce a well-directed effect on the ...Automatic Calculation Of Particle Interaction Or Decay - Matrix Element Calculation Methods - Helicity Amplitude

... Feynman

... Feynman

**amplitudes**are written in terms of spinor products of wave functions for massless fermions, and then evaluated numerically before the**amplitudes**are squared ... Taking into account fermion masses implies that Feynman**amplitudes**are decomposed into vertex**amplitudes**by splitting the internal lines into wave function of fermions and polarization vectors of gauge bosons ...Neutron-star Oscillation - Oscillation Excitation

... in neutron stars are probably weak with small

... in neutron stars are probably weak with small

**amplitudes**, but exciting these oscillations might increase the**amplitudes**to observable levels ... The hit adds energy to the system, which excites the**amplitudes**of the oscillations to greater magnitude, and so is more easily observed ...