Physics:Quantum methods/renormalization
From HandWiki Test
Renormalization is a set of techniques used in quantum field theory to deal with infinities that arise in calculations of physical quantities.
Renormalization adjusts parameters so predictions remain finite and measurable.
Overview
Perturbative calculations often produce divergent integrals. Renormalization absorbs these divergences into redefined physical parameters such as mass and charge.
Key ideas
- Bare vs. physical quantities
- Running coupling constants
- Scale dependence
Renormalization group
The renormalization group describes how physical systems change with scale and plays a central role in modern theoretical physics.
See also
Table of contents (217 articles)
Index
Core theory
Applications and extensions
Full contents
1. Foundations (14) Back to index
2. Conceptual and interpretations (14) Back to index
3. Mathematical structure and systems (15) Back to index
4. Atomic and spectroscopy (14) Back to index
5. Wavefunctions and modes (9) Back to index
6. Quantum dynamics and evolution (21) Back to index
7. Measurement and information (9) Back to index
8. Quantum information and computing (15) Back to index
102. Physics:Quantum BB84
9. Quantum optics and experiments (10) Back to index
10. Open quantum systems (15) Back to index
11. Quantum field theory (23) Back to index
12. Statistical mechanics and kinetic theory (9) Back to index
13. Condensed matter and solid-state physics (17) Back to index
181. Physics:Quantum well
186. Physics:Quantum dot
14. Plasma and fusion physics (8) Back to index
15. Timeline (8) Back to index
16. Advanced and frontier topics (16) Back to index
References
Author: Harold Foppele
Source attribution: Physics:Quantum Renormalization
