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Dynamical SUSY Breaking in Meta-Stable Vacua

High Energy Physics - Theory · Submitted 23 Feb 2006 · Published version · 37 references

Pith's verdict: A landmark paper that reframes dynamical SUSY breaking around metastable vacua, with a simple, mostly rigorous demonstration in massive SQCD; the central claim holds up even though the Kähler coefficients are order-one unknowns.

T0 · AI review

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arXiv IDhep-th/0602239 (version 3)
Pith IDUOHJ2JYX, Pith's permanent record of this paper and its review
CitationDavid Shih, Kenneth Intriligator, Nathan Seiberg. "Dynamical SUSY Breaking in Meta-Stable Vacua." arXiv:hep-th/0602239 (2006). https://pith.science/paper/UOHJ2JYX
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Claim paper

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Referee report
The paper

The paper claims

Supersymmetric QCD with massive flavors has long-lived, calculable metastable vacua that break supersymmetry dynamically.

The reading

The paper overturns the usual requirement that dynamical supersymmetry breaking must occur in a theory with no supersymmetric vacua. It claims that the simplest vector-like supersymmetric gauge theory, SU($N_c$) QCD with $N_f$ massive flavors in the range $N_c+1 \leq N_f < \frac{3}{2}N_c$, has a metastable vacuum near the origin in which supersymmetry is dynamically broken, in addition to its ordinary supersymmetric vacua. Because the tunneling rate can be made parametrically small by taking the quark masses small, this metastable state is a viable physical possibility. If correct, the result makes broken supersymmetry generic in supersymmetric field theory and opens model building to theories that were previously rejected for having supersymmetric vacua somewhere.

What carries the argument

The rank-condition mechanism: for $N < N_f$, the F-term $F_{\Phi}^{ij} = h(\tilde{\phi}^c_j\,\phi^c_i - \mu^2\delta^{ij})$ cannot be set to zero because $\tilde{\phi}\phi$ has rank $N$ while $\mu^2\delta^{ij}$ has rank $N_f$. This mechanism is embedded in supersymmetric QCD through electric-magnetic duality: the magnetic dual is an infrared-free gauge theory, so the one-loop supertrace formula $V_{\rm eff}^{(1)} = \frac{1}{64\pi^2}\mathrm{STr}\,\mathcal{M}^4\log\mathcal{M}^2$ is reliable and stabilizes all pseudo-moduli. The same rank condition, with different group-theoretic coefficients, drives the analogous metastable constructions for SO($N_c$)/Spin($N_c$) and Sp($N_c$) theories. Nonperturbative gaugino condensation in the magnetic gauge group supplies the superpotential that restores supersymmetry elsewhere in field space, converting the local minimum into a metastable one.

Extended reading notes

Core claim

The central claim is that N=1 SU($N_c$) supersymmetric QCD with small, non-degenerate quark masses has a metastable, dynamically supersymmetry-breaking vacuum near $M = q = \tilde{q} = 0$, coexisting with the $N_c$ supersymmetric vacua required by the index theorem. The argument proceeds through the free-magnetic dual: in the infrared the theory becomes a tree-level supersymmetry-breaking model whose superpotential $W = h\,\mathrm{Tr}\,\phi\Phi\tilde{\phi} - h\mu^2\mathrm{Tr}\,\Phi$ has F-terms that cannot all vanish, because $\tilde{\phi}\phi$ has rank $N = N_f - N_c$ while $\mu^2$ has rank $N_f$. A one-loop effective potential stabilizes the classically flat pseudo-moduli with positive squared masses, while a nonperturbative superpotential from gaugino condensation creates supersymmetric vacua far away in field space, making the broken-supersymmetry vacuum only metastable. The vacuum energy, light spectrum, and lifetime are all computable in the magnetic description up to two order-one coefficients that encode the unknown Kähler metric.

Load-bearing premise

The argument assumes that the unknown Kähler metric of the magnetic dual near the origin is smooth and close to canonical, with positive coefficients of order one; if the true metric made any of the one-loop squared masses negative, the claimed non-supersymmetric minimum would be unstable or absent.

Editorial extensions

If this is right

  • Model building for dynamical supersymmetry breaking no longer needs to avoid theories with supersymmetric vacua; the simplest non-chiral massive gauge theories automatically provide calculable metastable supersymmetry-breaking sectors.
  • The lifetime is tunable: with $\epsilon \sim \sqrt{m/\Lambda}$, the bounce action grows like $\epsilon^{-4(N_f-3N)/(N_f-N)}$, so sufficiently small quark masses make the metastable vacuum live longer than the age of the universe.
  • The same construction gives metastable broken-supersymmetry vacua in SO($N_c$)/Spin($N_c$) and Sp($N_c$) gauge theories; in the Spin($N$) case the supersymmetric and non-supersymmetric vacua sit in different phases, confining versus oblique confining.
  • The metastable vacuum has a compact moduli space of Goldstone-boson vacua, whose larger configuration space compared with the isolated supersymmetric vacua may favor its population in early-universe cosmology.
  • These theories sidestep the usual R-symmetry obstruction: the microscopic theory has no exact R-symmetry, while the magnetic dual develops an accidental R-symmetry near the origin, so broken supersymmetry coexists with the absence of an exact R-symmetry.
  • The pseudo-moduli acquire small masses of order $h^2\mu$ and the Goldstino remains exactly massless, giving a distinctive low-energy spectrum that can be tested if such a sector mediates supersymmetry breaking.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • If the central claim survives a full determination of the magnetic Kähler metric, the same rank-condition logic can be transplanted to other dual pairs, such as adjoint-matter dualities, N=2 theories slightly broken to N=1, and string-realized quiver gauge theories, yielding a wide class of calculable metastable supersymmetry-breaking vacua.
  • A lattice or holographic computation of the two unknown order-one coefficients in the Kähler potential would promote the existence proof into quantitative predictions for the pseudo-modulus masses and vacuum energy, which could be searched for in cosmological or collider signatures.
  • Because the metastable vacuum manifold has nontrivial topology, solitonic strings are expected with lifetimes comparable to the vacuum lifetime; if this sector mediates supersymmetry breaking, those strings could have observable cosmological consequences.
  • The larger volume of the broken-supersymmetry vacuum moduli space relative to the isolated supersymmetric vacua suggests a possible entropic bias toward initial conditions with broken supersymmetry in the string landscape, though quantifying such a bias requires a vacuum-selection measure that the paper does not provide.
Original abstract

Dynamical supersymmetry breaking in a long-lived meta-stable vacuum is a phenomenologically viable possibility. This relatively unexplored avenue leads to many new models of dynamical supersymmetry breaking. Here, we present a surprisingly simple class of models with meta-stable dynamical supersymmetry breaking: N=1 supersymmetric QCD, with massive flavors. Though these theories are strongly coupled, we definitively demonstrate the existence of meta-stable vacua by using the free-magnetic dual. Model building challenges, such as large flavor symmetries and the absence of an R-symmetry, are easily accommodated in these theories. Their simplicity also suggests that broken supersymmetry is generic in supersymmetric field theory and in the landscape of string vacua.

The compiled record

The paper's own sentences, arranged, kept beside the review and separate from it. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,911 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.07 · states limitation 0.28 · human participants 0.01 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.04 · compares with prior results 0.13 · mentions code or data availability 0.01.

The abstract, sentence by sentence

arXiv listing abstract v3. Results and the main claim are underlined; .

Dynamical supersymmetry breaking in a long-lived meta-stable vacuum is a phenomenologically viable possibility. This relatively unexplored avenue leads to many new models of dynamical supersymmetry breaking. Here, we present a surprisingly simple class of models with meta-stable dynamical supersymmetry breaking: N=1 supersymmetric QCD, with massive flavors. Though these theories are strongly coupled, we definitively demonstrate the existence of meta-stable vacua by using the free-magnetic dual. Model building challenges, such as large flavor symmetries and the absence of an R-symmetry, are easily accommodated in these theories. Their simplicity also suggests that broken supersymmetry is generic in supersymmetric field theory and in the landscape of string vacua.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 Dynamical supersymmetry breaking in a long-lived meta-stable vacuum is a phenomenologically viable possibility. background 1.00 0.06 0.18 hedged possibility 0.79
s1 This relatively unexplored avenue leads to many new models of dynamical supersymmetry breaking. gap 0.51 0.09 0.06 asserted 0.99
s2 Here, we present a surprisingly simple class of models with meta-stable dynamical supersymmetry breaking: N=1 supersymmetric QCD, with massive flavors. contribution 1.00 0.91 0.30 asserted 1.00
s3 Though these theories are strongly coupled, we definitively demonstrate the existence of meta-stable vacua by using the free-magnetic dual. result 0.44 0.94 0.37 asserted 1.00
s4 Model building challenges, such as large flavor symmetries and the absence of an R-symmetry, are easily accommodated in these theories. interpretation 0.49 0.48 0.05 asserted 0.95
s5 Their simplicity also suggests that broken supersymmetry is generic in supersymmetric field theory and in the landscape of string vacua. interpretation 1.00 0.23 0.39 hedged possibility 0.99

What kind of paper the classifier reports this is: theoretical result 1.00 · evidence from proof or derivation 0.98.

What was examined, and what was not

sources read
  • arXiv listing abstract v3
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

References
How later papers used it

242 later papers cite it

Evidence: substantial. 242 of the citing papers share no author with it, and 50 of those carry a confident label from Pith's citation classifier.

Pith read 40 of the 592 citing sentences, choosing only those whose citation markers point at this paper alone, and wrote the paraphrases from them. The summary, the counts, the evidence level, the links and the quotes come from code; the summary counts the papers listed below. A later paper is listed under a label when Pith's citation classifier gives one of its sentences that label at probability 0.8 or more (0.95 for support), Pith's reading finds that the citing paper itself did it, and a second check confirms the paraphrase against the sentence. This section lists uses only. It does not list criticism or disagreement, so their absence here says nothing about how the paper has been received. Papers that share an author with this one are listed apart, under "By the same authors". A quote is the citing authors' own sentence, shown when their paper's licence is CC BY, CC BY-SA or CC0. JSON

Uses its method or tool 7 of 14 papers with this label
Uses its data or values 3 papers
Compares with it 1 of 17 papers with this label
How the literature uses it

234 arXiv papers cite this in 579 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 371 sentences without a confident label

Builds on it 13 papers
Uses its method or tool 14 papers
Uses its data or values 3 papers
Compares with it 17 papers
  • The superpotential for this quiver gauge theory is isssu W=h ζ ( Φ) - h ( ΦYY) , which is the same as the ISS superpotential in the IR limit [ref] , with the $SU(N)$ identified as the “color” group and $SU(N+M)$ as the “flavor” symmetry.

    On the Geometry of Metastable Supersymmetry Breaking · Dynamical SUSY breaking · 0.91

  • The leading decay channel can be arranged to be as in [ref] with bounce action [ref] :[ To argue this note that there are only two ways in which the leading decay channel could differ from that found in [ref] .

    Metastable Vacua in Warped Throats at Non-Isolated Singularities · Infrared model · 0.83

  • In the magnetic theory that we consider, the number of colors is $N_f - N_c$ and the number of massive flavors is $N_f$ so the SUSY is broken by the rank condition the SUSY in broken by the rank condition i.e. the F-term equation for the field $Φ̃$ does not have a solution, same as in [ref] .

    Metastable Vacua and Complex Deformations · $N =1, SU(N_f) ×SU(N_c)$ Model · 0.88

Cites it as support 5 papers
  • However, it has been shown in Ref. [ref] that the vacuum near $S=0$ is meta-stable.

    Sweet Spot Supersymmetry · UV completion · 0.97

  • Remarkably, this is precisely what happens in the Intriligator, Seiberg and Shih (ISS) model [ref] .

    Direct Mediation, Duality and Unification · Introduction · 0.96

  • In particular, they discussed the ISS model [ref] , which describes a BREAK sector with a single $U(1)$ gauge field at low energies.

    Is Gauge Mediation in the Swampland? · Mediation of SUSY Breaking · 0.97

Cites it as background 103 papers

Discussion

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