GaussianMode · section of the QIQT-H book

QIQTH.GaussianMode

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GaussianMode · entries 428–444 of 1000

Definition 428 (gaussC).  source ↗

Normalization constant C = (ℏ√π)^{−1/2} of the Gaussian reference profile.

gaussC  :=  ((ℏ⋅π))−1\mathrm{gaussC} \;:=\; {(\sqrt (\hbar \cdot \sqrt \pi))}^{-1}

Used by gaussMode, gaussC_sq_mul_sqrt, gaussMode_normSq, gaussMode_conj_mul, gaussMode_integrable, gaussMode_calibration, gaussC_pos, gaussMode_norm, and 7 more.

Definition 429 (gaussMode).  source ↗

The Gaussian wave-packet reference profile g₀(θ) = C·exp(−θ²/2 − iθ).

g0 θ  :=  (gaussC ℏ)⋅exp⁡ ((−θ2/2)−θ⋅i)g_{0}\,\theta \;:=\; (\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussc}{\mathrm{gaussC}}\,\hbar) \cdot \exp\,((-{\theta}^{2} / 2) - \theta \cdot i)

Used by gaussMode', gaussMode_normSq, gaussMode_conj_mul, gaussMode_integrable, gaussMode_calibration, gaussMode_norm, gaussMode_continuous, gaussMode_hasDerivAt, and 7 more.

Definition 430 (gaussMode').  source ↗

Its derivative profile g₀'(θ) = g₀(θ)·(−θ − i).

gaussMode′ θ  :=  g0 ℏ θ⋅(−θ−i)\mathrm{gaussMode}^{\prime}\,\theta \;:=\; \href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar\,\theta \cdot (-\theta - i)

Used by gaussMode_conj_mul, gaussMode_integrable, gaussMode_calibration, gaussMode_hasDerivAt, gaussMode'_continuous, gaussMode'_norm_le, qiqt_gr_freefield_complete, qiqt_gr_freefield_gaussian.

Lemma 431 (gaussC_sq_mul_sqrt).  source ↗

C²·√π = 1/ℏ for ℏ > 0 — the calibration arithmetic.

0<ℏ→gaussC ℏ2⋅π=1/ℏ0 < \hbar \to {\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussc}{\mathrm{gaussC}}\,\hbar}^{2} \cdot \sqrt \pi = 1 / \hbar

Proof. Immediate from the definitions. □\square

Used by gaussMode_calibration.

Lemma 432 (gaussMode_normSq).  source ↗

normSq(g₀ θ) = C²·e^{−θ²} — the Gaussian envelope.

normSq (g0 ℏ θ)=gaussC ℏ2⋅exp⁡ (−θ2)\mathrm{normSq}\,(\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar\,\theta) = {\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussc}{\mathrm{gaussC}}\,\hbar}^{2} \cdot \exp\,(-{\theta}^{2})

Proof. Immediate from the definitions. □\square

Used by gaussMode_conj_mul, gaussMode_norm, gaussMode_sq_integrable.

Lemma 433 (gaussMode_conj_mul).  source ↗

The pointwise boost-charge density: conj(g₀ θ)·g₀'(θ) = ↑(C²·e^{−θ²})·(−θ − i).

(starRingEnd C) (g0 ℏ θ)⋅gaussMode′ ℏ θ=(gaussC ℏ2⋅exp⁡ (−θ2))⋅(−θ−i)(\mathrm{starRingEnd}\,\mathbb{C})\,(\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar\,\theta) \cdot \href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{\mathrm{gaussMode}^{\prime}}\,\hbar\,\theta = ({\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussc}{\mathrm{gaussC}}\,\hbar}^{2} \cdot \exp\,(-{\theta}^{2})) \cdot (-\theta - i)

Proof. By gaussMode_normSq. □\square

Used by gaussMode_integrable, gaussMode_calibration.

Lemma 434 (gaussMode_integrable).  source ↗

The boost-charge integrand is integrable (Gaussian × polynomial).

Integrable (λθ↦(starRingEnd C) (g0 ℏ θ)⋅gaussMode′ ℏ θ) vol\mathrm{Integrable}\,(\lambda \theta \mapsto (\mathrm{starRingEnd}\,\mathbb{C})\,(\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar\,\theta) \cdot \href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{\mathrm{gaussMode}^{\prime}}\,\hbar\,\theta)\,\mathrm{vol}

Proof. By gaussC, gaussMode_conj_mul. □\square

Used by gaussMode_calibration.

Lemma 435 (gaussMode_calibration).  source ↗

The Gaussian profile satisfies the calibration (−2π ∫ conj(g₀)·g₀').im = 2π/ℏ. Combined with localized_mode_hTkk, the per-generator hTkk is fully discharged for the canonical Gaussian localization.

0<ℏ→(−(2⋅π⋅∫(θ:R),(starRingEnd C) (g0 ℏ θ)⋅gaussMode′ ℏ θ)).im=2⋅π/ℏ0 < \hbar \to (-(2 \cdot \pi \cdot \int (\theta : \mathbb{R}), (\mathrm{starRingEnd}\,\mathbb{C})\,(\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar\,\theta) \cdot \href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{\mathrm{gaussMode}^{\prime}}\,\hbar\,\theta)).\mathrm{im} = 2 \cdot \pi / \hbar

Proof. By gaussC, gaussC_sq_mul_sqrt, gaussMode_conj_mul, gaussMode_integrable. □\square

Used by qiqt_gr_freefield_complete, qiqt_gr_freefield_gaussian.

Lemma 436 (gaussC_pos).  source ↗

0<ℏ→0<gaussC ℏ0 < \hbar \to 0 < \href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussc}{\mathrm{gaussC}}\,\hbar

Proof. Immediate from the definitions. □\square

Used by gaussMode_norm, gaussMode'_norm_le.

Lemma 437 (gaussMode_norm).  source ↗

‖g₀(θ)‖ = C·e^{−θ²/2} (from normSq = C²e^{−θ²}).

0<ℏ→∀(θ:R),∥g0 ℏ θ∥=gaussC ℏ⋅exp⁡ (−θ2/2)0 < \hbar \to \forall (\theta : \mathbb{R}), \|\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar\,\theta\| = \href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussc}{\mathrm{gaussC}}\,\hbar \cdot \exp\,(-{\theta}^{2} / 2)

Proof. By gaussMode_normSq, gaussC_pos. □\square

Used by gaussMode'_norm_le, gaussMode_integrable_fn.

Lemma 438 (gaussMode_continuous).  source ↗

Continuous (g0 ℏ)\mathrm{Continuous}\,(\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar)

Proof. By gaussC. □\square

Used by gaussMode'_continuous, gaussMode_memLp, gaussMode_integrable_fn.

Lemma 439 (gaussMode_hasDerivAt).  source ↗

(g0 ℏ)′(θ)=gaussMode′ ℏ θ({\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar})'({\theta})={\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{\mathrm{gaussMode}^{\prime}}\,\hbar\,\theta}

Proof. By gaussC. □\square

Used by qiqt_gr_freefield_complete, qiqt_gr_freefield_gaussian.

Lemma 440 (gaussMode'_continuous).  source ↗

Continuous (gaussMode′ ℏ)\mathrm{Continuous}\,(\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{\mathrm{gaussMode}^{\prime}}\,\hbar)

Proof. By gaussMode, gaussMode_continuous. □\square

Used by qiqt_gr_freefield_complete, qiqt_gr_freefield_gaussian.

Lemma 441 (gaussMode'_norm_le).  source ↗

‖g₀'(θ)‖ ≤ C, via 1 + θ² ≤ e^{θ²} so e^{−θ²/2}√(θ²+1) ≤ 1.

0<ℏ→∀(θ:R),∥gaussMode′ ℏ θ∥≤gaussC ℏ0 < \hbar \to \forall (\theta : \mathbb{R}), \|\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{\mathrm{gaussMode}^{\prime}}\,\hbar\,\theta\| \le \href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussc}{\mathrm{gaussC}}\,\hbar

Proof. By gaussMode, gaussC_pos, gaussMode_norm. □\square

Used by qiqt_gr_freefield_complete, qiqt_gr_freefield_gaussian.

Lemma 442 (gaussMode_sq_integrable).  source ↗

Integrable (λθ↦∥g0 ℏ θ∥2) vol\mathrm{Integrable}\,(\lambda \theta \mapsto {\|\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar\,\theta\|}^{2})\,\mathrm{vol}

Proof. By gaussC, gaussMode_normSq. □\square

Used by gaussMode_memLp.

Lemma 443 (gaussMode_memLp).  source ↗

MemLp (g0 ℏ) 2 vol\mathrm{MemLp}\,(\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar)\,2\,\mathrm{vol}

Proof. By gaussMode_continuous, gaussMode_sq_integrable. □\square

Used by qiqt_gr_freefield_complete, qiqt_gr_freefield_gaussian.

Lemma 444 (gaussMode_integrable_fn).  source ↗

0<ℏ→Integrable (g0 ℏ) vol0 < \hbar \to \mathrm{Integrable}\,(\href{/browser/qiqth-gaussianmode#d-qiqth-wedgekmstogr-gaussmode}{g_{0}}\,\hbar)\,\mathrm{vol}

Proof. By gaussC, gaussMode_norm, gaussMode_continuous. □\square

Used by qiqt_gr_freefield_complete, qiqt_gr_freefield_gaussian.


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