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Local D7 matter metrics and a volume-suppressed LVS soft-term pattern

Physical scope

A leading-order two-modulus type-IIB large-volume EFT example with a stipulated small-cycle D7 gauge sector and matter metric. It is not a constructed Standard Model, a universal D7 spectrum, or a full string solution. The retained visible scalar Taylor coefficients through cubic order are auxiliary-induced; V0 is the F-sector value, not an independently shifted total vacuum energy.

Example

Use natural units ℏ=c=1, the four-dimensional Einstein frame, and reduced Planck units MP=1. Consider a family of local two-modulus large-volume scenario (LVS) data with V→∞; each displayed o(⋅) term denotes a remainder whose ratio to its argument tends to zero along this family. Supply a smooth compact Calabi–Yau threefold X in the convention of the volume-coordinate supplier, and smooth holomorphic divisors Db,Ds⊂X (closed complex submanifolds of complex codimension one). Choose dimensionless smooth real closed (1,1)-forms ωb,ωs whose integral classes form the selected orientifold-even Kähler basis and are Poincaré dual to these divisors: ∫Daη=∫Xωa∧η for every smooth closed real four-form η and a∈{b,s}. On this two-dimensional Kähler sector take [J]=vb[ωb]+vs[ωs], with J a positive closed real (1,1)-form in α′=1 units, and set τa=12∫DaJ∧J=12∫Xωa∧J∧J>0. Require the map (vb,vs)↦(τb,τs) to have nonsingular real Jacobian on the chosen patch. Write Tb=τb+iθb and Ts=τs+iθs for the stipulated local complex EFT coordinates, with θb,θs∈R on this patch. A specified small-cycle D7 stack means a Type IIB D7-brane gauge sector with worldvolume M4×Ds, where M4 is the four-dimensional external spacetime; thus its internal wrapping class is the supplied [Ds]. These geometric data are conditional inputs; no global brane/tadpole solution is asserted. Take the leading Swiss-cheese geometry V=α(τb3/2−λgτs3/2),α,λg>0,V>0, and the leading Kähler potential K0=−2log⁡V. Dilute worldvolume flux means that its contribution to the displayed leading gauge-kinetic data is omitted. Use gauge kinetic functions fa=Ts/(2π) and matter metric Zαβˉ=τsλmτbkαβˉ(U),λm=13, where U denotes fixed local complex-structure coordinates and k(U0) is positive Hermitian and diagonal in a constant visible-field basis at the selected background U0. Assume FU=0 and that the nonzero tree-level Yukawa couplings Yαβγ(U) have no Kähler-modulus dependence. Write m3/2:=eK0/2∣W0∣ and M:=FTs/(2τs). Assume that on a tail of the family m3/2>0 and M≠0, and that lim⁡V→∞∣M∣/m3/2=0 along this family. In the retained leading large-volume background also assume FTb2τb=−m3/2+o(∣M∣),m3/22+V0−∣FTb∣24τb2=o(∣M∣2), and τs3/2Vm3/2∣M∣⟶0,τs3/2V⟶0. These are explicit leading-order auxiliary and scale-separation hypotheses of this EFT example. Use the visible-field Kähler/superpotential Taylor expansion and the auxiliary and gauge-component conventions of the tree-level soft-term theorem. For each family member, require Vret=VF+VD+Uadd(T,Tˉ,Ucs,Uˉcs)+R(T,Tˉ,Ucs,Uˉcs,Q,Qˉ), where Ucs denotes the fixed complex-structure coordinates, the added function Uadd is independent of visible fields, and R is C3 in the real visible coordinates with all visible derivatives of orders zero through three vanishing at Q=0. This explicitly excludes independent visible quadratic or cubic potential terms. Here V0 in the stipulated no-scale residual is VF(Q=0), not the total vacuum energy if Uadd≠0; the supplied auxiliary hierarchy must still hold at the chosen background.

In the leading soft-term truncation, the gaugino mass is Ma=M, the scalar mass satisfies mα2=∣M∣2/3, and the trilinear coefficient is Aαβγ=−M. After the common phase choice M>0, the scalar mass is mα=Ma/3. Thus the displayed soft scales are suppressed relative to m3/2 by the assumed small-cycle F-term hierarchy. This example supplies no universal D7 or Minimal Supersymmetric Standard Model (MSSM) prediction.

Facts & Assumptions

Given: The local Kähler-volume coordinates, compactification EFT chart, moduli auxiliary values, D7 gauge function, and positive visible matter metric in the Example statement.

[F1]

Calabi–Yau threefold intersection and Kähler-volume coordinates defines va, V, and τa as dimensionless Kähler-cone and dual four-cycle coordinates; a divisor-volume interpretation requires the stated divisor basis. Its stored ready record is stale because the item/dependency hash changed, so the current readiness check remains open.

[F2]

Compactification-derived four-dimensional moduli EFT data defines the local compactification EFT patch, Einstein metric, K,W,fAB, retained coordinates, and omitted sectors. Its current Step 1 record is escalated on unresolved O3/O7 coordinate, conditional K/f, orientifold, parity, local-metric, and N=2 period readiness; we use only the stated data interface conditionally.

[F3]

Tree-level moduli-mediated visible-sector soft terms gives the conditional tree-level formulae for the gaugino mass, diagonal scalar mass, and trilinear coefficient after canonical normalization. Its hypotheses include positive diagonal matter metrics, VD(Q=0)=0, and no visible D-term contribution through cubic order. The Example does not impose the background-value condition on its original VD. Step 1.2 instead applies this theorem to a reference auxiliary model with zero moment maps and transfers only the unchanged visible coefficients. In both models V0 denotes the F-sector value, not an independently shifted total energy.

[A1]

The planned supplier Unique negative stationary point and positive-definite coordinate Hessian of the exact two-variable function now has a current carrier on the A page cmp-moduli-stabilization; its complete local conditional proof was inspected. The exact planned Statement in research/plan-spec.json is: “For the exact radial 4D EFT function V3term(τ,𝒱)=Aτexp⁡(−2aτ)/𝒱−Bτexp⁡(−aτ)/𝒱2+C/𝒱3 on τ>0, 𝒱>0, with constants A,B,C,a>0, there is exactly one stationary point. Its value is negative and its Hessian in the two radial coordinates is positive definite. The theorem concerns this exact three-term scalar function only. A type-IIB LVS interpretation requires the separately stated K,W-to-coefficient map, Kähler-cone check, axion analysis, and correction-control conditions; it does not assert that omitted string corrections are controlled or that dS uplift exists.” The actual carrier uses Planck units, independent dimensionless coordinates τ,V>0, positive dimensionless constants A1,B1,C1,a, and the exact function V3term=A1τe−2aτ/V−B1τe−aτ/V2+C1/V3; its Statement proves one stationary point, negative value, and positive-definite coordinate Hessian, which matches the planned radial interface after A=A1, B=B1, and C=C1. The actual hypotheses fix only that exact positive-quadrant function. The plan additionally requires fluxes to stabilize S and complex-structure fields with a mass hierarchy for a physical Kähler-sector truncation; an independently stated K,W-to-coefficient map and actual interior Kähler-cone point for a Swiss-cheese interpretation; and omission or separate control of α′, loop, warping, higher-derivative, additional-instanton, uplift, and localized-source corrections. Those are physical-interpretation conditions in the plan, not hypotheses of the actual exact-function Statement. The actual proof establishes no K,W coefficient map, interior Kähler-cone placement, axion stability, omitted-correction control, or auxiliary F-term relation. The plan records “complete-conditional-calculation-in-note; local item reconstruction and K,W coefficient derivation owed”; the actual carrier's Step 1 readiness record is missing. In the planned text, dS means de Sitter. We use the actual result only as the stipulated radial-theorem interface and do not infer the no-scale auxiliary relations or small-cycle F-term hierarchy in [A2] from it.

[A2]

In the specified leading LVS model, FU=0, Yαβγ is Kähler-modulus independent, k(U0) is diagonal in the chosen constant basis, and the leading auxiliary relations and asymptotic conditions in the Example statement hold. The relations are model data for this conditional calculation, not consequences of [A1].

[A3]

The gauge-kinetic function and matter metric are exactly the stated leading local inputs. Flux corrections to fa, corrections to Zαβˉ, D-term mediation, loops, anomaly mediation, thresholds, and RG running are omitted. Use the visible-field Kähler/superpotential Taylor expansion and the auxiliary and gauge-component conventions of the tree-level soft-term theorem. For each family member, require Vret=VF+VD+Uadd(T,Tˉ,Ucs,Uˉcs)+R(T,Tˉ,Ucs,Uˉcs,Q,Qˉ), where Ucs denotes the fixed complex-structure coordinates, the added function Uadd is independent of visible fields, and R is C3 in the real visible coordinates with all visible derivatives of orders zero through three vanishing at Q=0. This explicitly excludes independent visible quadratic or cubic potential terms. Here V0 in the stipulated no-scale residual is VF(Q=0), not the total vacuum energy if Uadd≠0; the supplied auxiliary hierarchy must still hold at the chosen background.

Verification

Given: [F1]–[F3] and [A1]–[A3], with τb,τs,V>0 and the stated leading large-volume limit.

1.1givenF1F2A1A2

The supplied duality gives τa=12∫Xωa∧J2=12κabcvbvc for a∈{b,s}, so [F1] identifies τs and τb as the volumes of the supplied divisors Ds,Db; the D7 sector wraps Ds. The volume-to-τ Jacobian hypothesis makes these real coordinates locally admissible, while the equation for V and the complex coordinates Tb,Ts are the additional model data in [A2]. The current radial supplier in [A1] proves only its exact two-coordinate stationary-point claim; it does not supply the auxiliary relations, which remain explicit assumptions in [A2]. Its current Step 1 record is missing, so this dependency remains open.

1.2givenF3A2A3constructalgebra

At each fixed moduli background, form a reference local auxiliary model with the same K,W,fa and component conventions, but with neutral chiral coordinates and one Abelian gauge factor for each a, acting trivially, with all moment maps zero. Its VD is identically zero; take its retained potential to be VF. The positive metrics, regularity, holomorphic data and Yukawa symmetry required by [F3] are inherited from [A3], and all Yukawas are invariant under the trivial action. Thus every hypothesis of [F3] holds in the reference model. Chiral auxiliary elimination depends only on K,W, so its Fm, m3/2 and VF equal the original ones. In the original model, omission of D-term mediation in [A3] means that VD has no visible quadratic or cubic coefficients; Uadd has no visible derivatives, and those coefficients of R vanish. Consequently both models have identical visible quadratic and cubic potential coefficients and identical canonical matter metrics. Their auxiliary-induced gaugino bilinears also coincide by the adopted gauge-component convention, with identical normalization Re⁡fa. Therefore the soft formulae of [F3] apply to these coefficients of the original model, even when its VD(Q=0) is nonzero. No background stationarity or total-energy equality is needed for this coefficient comparison.

1.3givenA2A3algebra

In the chosen diagonal basis, log⁡Zα=λmlog⁡τs−log⁡τb+log⁡kα(U0). Since ∂Tbτb=∂Tsτs=1/2 and FU=0, ∂Tb∂Tˉblog⁡Zα=14τb2,∂Ts∂Tˉslog⁡Zα=−λm4τs2,∂Ts∂Tˉblog⁡Zα=0. The sign in the second equality follows by differentiating log⁡τs twice, and the first by differentiating −log⁡τb twice.

2.1givenA3step 1.2algebra

For fa=Ts/(2π), Re⁡fa=τs/(2π) and ∂Tsfa=1/(2π). The gaugino formula licensed by step 1.2 therefore gives Ma=FTs2Re⁡fa∂Tsfa=FTs2τs=M.

2.2givenA2A3step 1.2algebra

The Kähler derivatives of K0=−2log⁡V are ∂TbK0=−3ατb2V,∂TsK0=3αλgτs2V. The product matter metric gives ∂Tblog⁡(ZαZβZγ)=−3/(2τb) and ∂Tslog⁡(ZαZβZγ)=3λm/(2τs). Since Y has no Kähler-modulus dependence and FU=0, the trilinear formula licensed by step 1.2 becomes Aαβγ=FTb(−3ατb2V+32τb)+FTs(3αλgτs2V−3λm2τs).

3.1givenA2A3step 1.2step 2.1step 1.3algebra

Substitution into the scalar formula licensed by step 1.2 gives mα2=m3/22+V0−∣FTb∣24τb2+λm∣FTs∣24τs2=(m3/22+V0−∣FTb∣24τb2)+λm∣M∣2. The first parenthesis is o(∣M∣2) by [A2]. Hence the retained leading term is mα2=λm∣M∣2=∣M∣2/3. The physical mass is nonnegative, so mα=∣M∣/3 at this order. The coefficient comparison in step 1.2 makes the auxiliary quadratic coefficient the retained mass coefficient; V0 in this cancellation remains VF(Q=0) even when a moduli-only term is present.

3.2givenA2step 2.2algebra

From V=α(τb3/2−λgτs3/2), −3ατb2V+32τb=−3αλgτs3/22τbV. Multiplying by FTb=−2τbm3/2+o(τb∣M∣) makes this term o(∣M∣) by the first asymptotic condition in [A2]. The FTs contribution proportional to τs/V is o(∣M∣) by the second asymptotic condition in [A2]; its remaining term is −3λmFTs/(2τs)=−3λmM. Therefore Aαβγ=−3λmM+o(∣M∣)=−M+o(∣M∣), whose retained leading coefficient is −M.

4.1givenA2step 2.1step 3.1step 3.2∎

By [A2], along the specified family lim⁡V→∞∣M∣/m3/2=0, and m3/2 and ∣M∣ are nonzero on a tail, so the ratios below are defined. Steps 2.1, 3.1, and 3.2 give ∣Ma∣/m3/2=∣M∣/m3/2→0, mα/m3/2=∣M∣/(3 m3/2)→0 at retained leading order, and ∣Aαβγ∣/m3/2≤(1+o(1))∣M∣/m3/2→0, since Aαβγ=−M+o(∣M∣). The suppression is therefore a conditional asymptotic consequence of the stipulated hierarchy, not a deduction from [A1] or [F3] and not an empirical spectrum claim.

Unresolved supplier

The current batch-89 radial theorem carrier matches the planned exact-function interface after renaming its positive coefficients, and its complete proof establishes only the unique radial stationary point, negative value, and positive coordinate Hessian. Its current Step 1 readiness record is missing, and it does not establish the small-cycle auxiliary hierarchy or the no-scale cancellation used in [A2]. Those remain explicit model inputs; this example remains escalated until the missing current supplier readiness record is authored.

Depends on

Dependency tree · 2 levels

Sources