| dbo:abstract |
L'angle thêta, en physique quantique, est une caractéristique de secteurs de supersélections, lesquels résultent de la décomposition de l'espace de Hilbert. (fr) In quantum field theory, the theta vacuum is the semi-classical vacuum state of non-abelian Yang–Mills theories specified by the vacuum angle θ that arises when the state is written as a superposition of an infinite set of topologically distinct vacuum states. The dynamical effects of the vacuum are captured in the Lagrangian formalism through the presence of a θ-term which in quantum chromodynamics leads to the fine tuning problem known as the strong CP problem. It was discovered in 1976 by Curtis Callan, Roger Dashen, and David Gross, and independently by Roman Jackiw and Claudio Rebbi. (en) |
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| rdfs:comment |
L'angle thêta, en physique quantique, est une caractéristique de secteurs de supersélections, lesquels résultent de la décomposition de l'espace de Hilbert. (fr) In quantum field theory, the theta vacuum is the semi-classical vacuum state of non-abelian Yang–Mills theories specified by the vacuum angle θ that arises when the state is written as a superposition of an infinite set of topologically distinct vacuum states. The dynamical effects of the vacuum are captured in the Lagrangian formalism through the presence of a θ-term which in quantum chromodynamics leads to the fine tuning problem known as the strong CP problem. It was discovered in 1976 by Curtis Callan, Roger Dashen, and David Gross, and independently by Roman Jackiw and Claudio Rebbi. (en) |
| rdfs:label |
Angle thêta (fr) Theta vacuum (en) |
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