Beta function (physics)
In theoretical physics, specifically quantum field theory, a beta function, β(g), encodes the dependence of a coupling parameter, g, on the energy scale, μ, of a given physical process described by quantum field theory.It is defined as
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- enIn theoretical physics, specifically quantum field theory, a beta function, β(g), encodes the dependence of a coupling parameter, g, on the energy scale, μ, of a given physical process described by quantum field theory.It is defined as
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- enIn theoretical physics, specifically quantum field theory, a beta function, β(g), encodes the dependence of a coupling parameter, g, on the energy scale, μ, of a given physical process described by quantum field theory.It is defined as and, because of the underlying renormalization group, it has no explicit dependence on μ, so it only depends on μ implicitly through g.This dependence on the energy scale thus specified is known as the running of the coupling parameter, a fundamental feature of scale-dependence in quantum field theory, and its explicit computation is achievable through a variety of mathematical techniques.
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- Adjoint representation of a Lie group
- Asymptotic freedom
- Banks–Zaks fixed point
- Callan–Symanzik equation
- Casimir invariant
- Category:Renormalization group
- Category:Scaling symmetries
- Classical field theory
- Color charge
- Conformal anomaly
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- Coupling constant
- David Gross
- Energy scale
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- Frank Wilczek
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- Large Hadron Collider
- List of Nobel laureates in Physics
- Majorana fermions
- Perturbation theory (quantum mechanics)
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- Representations of Lie groups
- Scale invariance
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- Beta function (physics)
- Betafunktion (Physik)
- Função beta (física)
- Función beta (física)
- Fungsi Beta (fisika)
- Funzione beta (teoria quantistica dei campi)
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- m.040h8p
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- Β函數 (物理學)
- Бета-функция (физика)
- وظيفة بيتا (فيزياء)
- ベータ関数 (物理学)
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- Category:Renormalization group
- Category:Scaling symmetries
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