What is the probably upper limit of elements according to Feynman?
Because electrons have non zero rest mass, they cannot exceed the vacuum speed of light according to Einstein’s theory of relativity. Thus, atoms with Z > 137 cannot exist. Legend has it that the great physicist, Richard Feynman, first argued that element 137 was the largest possible element2.
Which quantities are conserved at each vertex of a Feynman diagram?
The Dyson series can be alternatively rewritten as a sum over Feynman diagrams, where at each vertex both the energy and momentum are conserved, but where the length of the energy-momentum four-vector is not necessarily equal to the mass, i.e. the intermediate particles are so-called off-shell.
What are the steps of the Feynman technique?
– Richard Feynman The Feynman Technique is a four-step process for understanding any topic. This technique rejects automated recall in favor of true comprehension gained through selection, research, writing, explaining, and refining. Feynman’s biography, penned by James Gleick, provides a host of clues into the famous physicist’s learning process.
What are the topological features of a Feynman diagram?
Topological features of Feynman diagrams are straightforwardly associated with terms in the Matrix element Represent particles (and antiparticles): Spin 1/2 Quarks and Leptons Spin 1 , W , Z g. And each interaction point (vertex) with a Each vertex contributes a factor of the coupling constant, g.
How are Feynman diagrams used in quantum mechanics?
Abstract We explain the use of Feynman diagrams to do perturbation theory in quantum mechanics. Feynman diagrams are a valuable tool for organizing and under- standing calculations. We first work several examples for the 1-dimensional harmonic oscillator, and then proceed to justify our calculations.
Why is Feynman known as the Great Explainer?
For this innate ability of his, Feynman earned the nickname of “The Great Explainer.” He has contributed to various topics in physics such as quantum mechanics, quantum aerodynamics, superfluidity, particle physics, and more. When scientists were unable to explain particle physics with ease due to the complexity of the concept.