A question about Feynman's book of Path. integrals

aife
Messages
2
Reaction score
0
Page 35 Feynman Quantum Mechanics and Path Integrals
(2-26)ψ=(iε)R

I know it's a defination.But how to find some threads.How can we get this?
 
Physics news on Phys.org
Hello aife, maybe you have to give some more information about the matter, otherwise those who don't have the book won't be able to help you.Sergio
 
Thanks for your advice.
Here's the quote:
 

Attachments

  • 2.jpg
    2.jpg
    36.2 KB · Views: 482

Thread 'Schrödinger equation and classical wave equation'

Not an expert in QM. AFAIK, Schrödinger's equation is quite different from the classical wave equation. The former is an equation for the dynamics of the state of a (quantum?) system, the latter is an equation for the dynamics of a (classical) degree of freedom. As a matter of fact, Schrödinger's equation is first order in time derivatives, while the classical wave equation is second order. But, AFAIK, Schrödinger's equation is a wave equation; only its interpretation makes it non-classical...
View full post »

Thread 'Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
View full post »

Thread 'Is Maxwell's electromagnetism an effective (field) theory?'

Is it possible, and fruitful, to use certain conceptual and technical tools from effective field theory (coarse-graining/integrating-out, power-counting, matching, RG) to think about the relationship between the fundamental (quantum) and the emergent (classical), both to account for the quasi-autonomy of the classical level and to quantify residual quantum corrections? By “emergent,” I mean the following: after integrating out fast/irrelevant quantum degrees of freedom (high-energy modes...
View full post »

Similar threads

I Question about Feynman’s path integrals
Replies
1
Views
1K
I Understanding how to derive the Feynman rules out of the path integral
Replies
33
Views
5K
A Lagrangian in the Path Integral
Replies
13
Views
2K
B Speed of light with quantum path integrals
Replies
3
Views
2K
I What do the authors of the paper mean here exactly by path integral?
Replies
6
Views
2K
I Feynman diagrams and sum over paths
Replies
5
Views
2K
A Pauli–Villars ghost fields?
Replies
8
Views
801
I Phase, Bloch sphere versus Feynman path
Replies
2
Views
2K
I QED/Quantum Mechanics: Probability or Spatial Function?
Replies
8
Views
2K
B Is a Spin 2 Particle the Key to Understanding Gravitation in Quantum Mechanics?
Replies
26
Views
3K

Hot Threads

Recent Insights

Back
Top