Regularization (physics)
In physics, especially quantum field theory, regularization is a method of modifying observables which have singularities in order to make them finite by the introduction of a suitable parameter called the regulator. The regulator, also known as a "cutoff", models our lack of knowledge about physics at unobserved scales (e.g. scales of small size or large energy levels). It compensates for (and requires) the possibility that "new physics" may be discovered at those scales which the present theory is unable to model, while enabling the current theory to give accurate predictions as an "effective theory" within its intended scale of use.
- Comment
- enIn physics, especially quantum field theory, regularization is a method of modifying observables which have singularities in order to make them finite by the introduction of a suitable parameter called the regulator. The regulator, also known as a "cutoff", models our lack of knowledge about physics at unobserved scales (e.g. scales of small size or large energy levels). It compensates for (and requires) the possibility that "new physics" may be discovered at those scales which the present theory is unable to model, while enabling the current theory to give accurate predictions as an "effective theory" within its intended scale of use.
- Has abstract
- enIn physics, especially quantum field theory, regularization is a method of modifying observables which have singularities in order to make them finite by the introduction of a suitable parameter called the regulator. The regulator, also known as a "cutoff", models our lack of knowledge about physics at unobserved scales (e.g. scales of small size or large energy levels). It compensates for (and requires) the possibility that "new physics" may be discovered at those scales which the present theory is unable to model, while enabling the current theory to give accurate predictions as an "effective theory" within its intended scale of use. It is distinct from renormalization, another technique to control infinities without assuming new physics, by adjusting for self-interaction feedback. Regularization was for many decades controversial even amongst its inventors, as it combines physical and epistemological claims into the same equations. However, it is now well understood and has proven to yield useful, accurate predictions.
- Is primary topic of
- Regularization (physics)
- Label
- enRegularization (physics)
- Link from a Wikipage to another Wikipage
- Abdus Salam
- Anomaly (physics)
- Atiyah–Singer index theorem
- Category:Concepts in physics
- Category:Quantum field theory
- Category:Summability methods
- Causal perturbation theory
- Chiral anomaly
- Classical electrodynamics
- Classical electron radius
- Compton wavelength
- Dimensional regularization
- Electromagnetic mass
- Elementary particle
- Elementary particles
- Epistemological
- Fermi interaction
- Feynman diagrams
- Feynman rules
- Fine-structure constant
- Gerard 't Hooft
- Green's function
- Hadamard regularization
- Inertia
- Kenneth G. Wilson
- Lagrangian (field theory)
- Landau pole
- Lattice regularization
- Lehmann–Symanzik–Zimmermann
- Leo Kadanoff
- Lorentz-invariant
- Minkowski spacetime
- Observables
- Path-integral formulation
- Paul Dirac
- Pauli–Villars regularization
- Perturbative
- Physics
- Physics beyond the standard model
- Propagator
- Quantum electrodynamics
- Quantum field theory
- Quantum gravity
- Renormalization
- Richard Feynman
- Second order phase transition
- Singularity (mathematics)
- S-matrix
- String theory
- Ultraviolet divergence
- Ultraviolet divergences
- Universality (dynamical systems)
- Werner Heisenberg
- Wolfgang Pauli
- Zeta function regularization
- SameAs
- DEfK
- m.06dqpf
- Q1156020
- Regolarizzazione (fisica)
- Regularisatie (natuurkunde)
- Régularisation (physique)
- Regularização (física)
- Regularización (física)
- Regularization (physics)
- Регуляризация (физика)
- Регуляризація
- تنظيم (فيزياء)
- 正規化
- 조절 (물리학)
- Subject
- Category:Concepts in physics
- Category:Quantum field theory
- Category:Summability methods
- WasDerivedFrom
- Regularization (physics)?oldid=1120457745&ns=0
- WikiPageLength
- 20277
- Wikipage page ID
- 2009062
- Wikipage revision ID
- 1120457745
- WikiPageUsesTemplate
- Template:Definition needed
- Template:Math
- Template:Mvar
- Template:Reflist
- Template:Renormalization and regularization
- Template:Short description