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Project-declaredLean 4.32.0

Mean Energy eq ratio of integrals

CanonicalEnsemble.meanEnergy_eq_ratio_of_integrals

Plain-language statement

The mean energy can be expressed as a ratio of integrals.

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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Project-declaredLean 4.32.0

An Part super Commute normal Order of Field Op List sum

FieldSpecification.WickAlgebra.anPart_superCommute_normalOrder_ofFieldOpList_sum

Plain-language statement

The commutator of the annihilation part of a field operator with a normal ordered list of field operators can be decomposed into the sum of the commutators of the annihilation part with each element of the list of field operators, i.e. [anPart Ο†, 𝓝(φ₀…φₙ)]β‚›= βˆ‘ i, 𝓒(Ο†, φ₀…φᡒ₋₁) β€’ [anPart Ο†, Ο†α΅’]β‚› * 𝓝(Ο†β‚€β€¦Ο†α΅’β‚‹β‚Ο†α΅’β‚Šβ‚β€¦Ο†β‚™).

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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Project-declaredLean 4.32.0

Of Cr An Op super Commute normal Order of Cr An List sum

FieldSpecification.WickAlgebra.ofCrAnOp_superCommute_normalOrder_ofCrAnList_sum

Plain-language statement

For a field specification 𝓕, an element Ο† of 𝓕.CrAnFieldOp, a list Ο†s of 𝓕.CrAnFieldOp, the following relation holds [Ο†, 𝓝(φ₀…φₙ)]β‚› = βˆ‘ i, 𝓒(Ο†, φ₀…φᡒ₋₁) β€’ [Ο†, Ο†α΅’]β‚› * 𝓝(Ο†β‚€β€¦Ο†α΅’β‚‹β‚Ο†α΅’β‚Šβ‚β€¦Ο†β‚™). The proof of this result ultimately goes as follows - The definition of normalOrder is used to rewrite 𝓝(φ₀…φₙ) as a scalar multiple of a `ofCrAnList...

physicsquantum field theoryrelativity

Source project: Physlib

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Project-declaredLean 4.32.0

Of Field Op mul normal Order of Field Op List eq super Commute

FieldSpecification.WickAlgebra.ofFieldOp_mul_normalOrder_ofFieldOpList_eq_superCommute

Plain-language statement

Within a proto-operator algebra we have that Ο† * 𝓝ᢠ(φ₀φ₁…φₙ) = 𝓝ᢠ(φφ₀φ₁…φₙ) + [anpart Ο†, 𝓝ᢠ(φ₀φ₁…φₙ)]β‚›F.

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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