Physlib

Physlib.Particles.SuperSymmetry.SU5.ChargeSpectrum.OfFieldLabel

Charges associated with a field label

i. Overview

Recall that a `FieldLabel` is one of the seven possible superfields in the SU(5) GUT, corresponding to the fields present and their conjugates.

Given a charge spectrum `x : ChargeSpectrum 𝓩`, we are interested in the finite set of charges carried by representations associated with a given `FieldLabel`.

Results in this module will be used to find the charges associated with terms in the potential.

ii. Key results

- `ofFieldLabel` : Given a charge spectrum `x : ChargeSpectrum 𝓩`, `ofFieldLabel x F` is the finite set of charges associated with representations corresponding to the field label `F`.

iii. Table of contents

- A. Charges associated with a field label - A.1. The field labels for the empty charge spectrum - A.2. Monotonicity of `ofFieldLabel` - A.3. Membership of conjugate charges - A.4. Extensionality of charge spectra via `ofFieldLabel`

iv. References

There are no known references for the results in this file.

A. Charges associated with a field label

We first define `ofFieldLabel`, which given a charge spectrum `x : ChargeSpectrum 𝓩` and a `FieldLabel`, returns the finite set of charges associated with representations corresponding to that `FieldLabel`.

A.1. The field labels for the empty charge spectrum

We show that the charges associated with any field label for the empty charge spectrum is empty. This follows directly from the definition.

A.2. Monotonicity of `ofFieldLabel`

We show that the function `ofFieldLabel` is monotone in the charge spectrum, with relation to the subset relation. That is for a fixed field label `F`, if `x ⊆ y` are charge spectra, then `ofFieldLabel x F ⊆ ofFieldLabel y F`.

A.3. Membership of conjugate charges

We show that a charge is a member of the finite sets associated with a field label if and only if its negative is a member of the finite set associated with the conjugate field label.

A.4. Extensionality of charge spectra via `ofFieldLabel`

We show that two charge spectra are equal if they are equal on all field labels.

This extensionality lemma is actually overkill in most cases, as there are a lot more direct ways to show that two charge spectra are equal.

7 declarations

definition

Finite set of charges for field label FF in spectrum xx

Given a charge spectrum xx and a field label FF in an SU(5)SU(5) Grand Unified Theory, the function ofFieldLabel(x,F)\text{ofFieldLabel}(x, F) returns the finite set of charges in Z\mathcal{Z} associated with that label. For labels representing the 5ˉ\bar{\mathbf{5}} (Higgs and matter) and 10\mathbf{10} (matter) representations, it returns the corresponding set of charges defined in the spectrum xx. For labels representing the conjugate representations, it returns the set of negated charges {zzS}\{ -z \mid z \in S \}, where SS is the set of charges associated with the non-conjugated field label.

theorem

ofFieldLabel(,F)=\text{ofFieldLabel}(\emptyset, F) = \emptyset for all field labels FF

For any field label FF in an SU(5)SU(5) Grand Unified Theory, the finite set of charges in Z\mathcal{Z} associated with that label in the empty charge spectrum \emptyset is the empty set \emptyset.

theorem

xy    ofFieldLabel(x,F)ofFieldLabel(y,F)x \subseteq y \implies \text{ofFieldLabel}(x, F) \subseteq \text{ofFieldLabel}(y, F)

For any two SU(5)SU(5) charge spectra x,yChargeSpectrum Zx, y \in \text{ChargeSpectrum } \mathcal{Z}, if xyx \subseteq y, then for any field label FFieldLabelF \in \text{FieldLabel}, the finite set of charges associated with FF in xx is a subset of those in yy, i.e., ofFieldLabel(x,F)ofFieldLabel(y,F)\text{ofFieldLabel}(x, F) \subseteq \text{ofFieldLabel}(y, F).

theorem

xy.ofFieldLabel(fiveHd)    xy.ofFieldLabel(fiveBarHd)x \in y.\text{ofFieldLabel}(\text{fiveHd}) \iff -x \in y.\text{ofFieldLabel}(\text{fiveBarHd})

In an SU(5)SU(5) Grand Unified Theory with a charge spectrum yy, a charge xZx \in \mathcal{Z} is a member of the set of charges associated with the field label fiveHd\text{fiveHd} if and only if its negative x-x is a member of the set of charges associated with the conjugate field label fiveBarHd\text{fiveBarHd}.

theorem

xy.ofFieldLabel(fiveHu)    xy.ofFieldLabel(fiveBarHu)x \in y.\text{ofFieldLabel}(\text{fiveHu}) \iff -x \in y.\text{ofFieldLabel}(\text{fiveBarHu})

In an SU(5)SU(5) Grand Unified Theory with a charge spectrum yy, a charge xZx \in \mathcal{Z} is an element of the set of charges associated with the up-type Higgs field label fiveHu\text{fiveHu} if and only if its negative x-x is an element of the set of charges associated with the conjugate up-type Higgs field label fiveBarHu\text{fiveBarHu}.

theorem

xy.ofFieldLabel(fiveMatter)    xy.ofFieldLabel(fiveBarMatter)x \in y.\text{ofFieldLabel}(\text{fiveMatter}) \iff -x \in y.\text{ofFieldLabel}(\text{fiveBarMatter})

In an SU(5)SU(5) Grand Unified Theory with a charge spectrum yy, a charge xZx \in \mathcal{Z} is an element of the set of charges associated with the matter field label fiveMatter\text{fiveMatter} if and only if its negative x-x is an element of the set of charges associated with the conjugate matter field label fiveBarMatter\text{fiveBarMatter}.

theorem

(F,x.ofFieldLabel(F)=y.ofFieldLabel(F))    x=y(\forall F, x.\text{ofFieldLabel}(F) = y.\text{ofFieldLabel}(F)) \implies x = y

Let xx and yy be two charge spectra over a charge type Z\mathcal{Z} in an SU(5)SU(5) Grand Unified Theory. If for every field label FF, the finite set of charges associated with xx for that label is equal to the finite set of charges associated with yy for that label (i.e., ofFieldLabel(x,F)=ofFieldLabel(y,F)\text{ofFieldLabel}(x, F) = \text{ofFieldLabel}(y, F) for all FF), then the charge spectra xx and yy are equal (x=yx = y).