# Approach feynmans new quantum theory thesis

The path integral formulation is a description in quantum mechanics that generalizes the action principle of classical mechanics. It replaces the classical notion of a single, unique classical trajectory for a system with a sum, or functional integral , over an infinity of quantum-mechanically possible trajectories to compute a quantum amplitude. This formulation has proven crucial to the subsequent development of theoretical physics , because manifest Lorentz covariance time and space components of quantities enter equations in the same way is easier to achieve than in the operator formalism of canonical quantization. Unlike previous methods, the path integral allows one to easily change coordinates between very different canonical descriptions of the same quantum system. Another advantage is that it is in practice easier to guess the correct form of the Lagrangian of a theory, which naturally enters the path integrals for interactions of a certain type, these are coordinate space or Feynman path integrals , than the Hamiltonian.

## Richard Feynman

## Path integral formulation - Wikipedia

Feynman developed a widely used pictorial representation scheme for the mathematical expressions describing the behavior of subatomic particles , which later became known as Feynman diagrams. During his lifetime, Feynman became one of the best-known scientists in the world. In a poll of leading physicists worldwide by the British journal Physics World , he was ranked the seventh greatest physicist of all time. He assisted in the development of the atomic bomb during World War II and became known to a wide public in the s as a member of the Rogers Commission , the panel that investigated the Space Shuttle Challenger disaster. Along with his work in theoretical physics, Feynman has been credited with pioneering the field of quantum computing and introducing the concept of nanotechnology. He held the Richard C.

### Path integral formulation

Seine anschauliche Darstellung quantenfeldtheoretischer elementarer Wechselwirkungen durch Feynman-Diagramme ist heute ein De-facto -Standard. Als er nach Princeton wechselte, war sie schon schwer erkrankt. Trotz der schweren Krankheit waren die beiden bei seinen Kollegen als humorvolles Paar bekannt. Seine Frau starb am

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