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Supersymmetric AdS_3, AdS_2 and Bubble Solutions

High Energy Physics - Theory · Submitted 22 Dec 2006 · 27 references

Pith's verdict: A solid construction paper: the new D=11 AdS2 family and the toric-like rescaling of superstar Kähler geometry are real results, but the §5 families never exhibit a regular member.

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arXiv IDhep-th/0612253 (version 2)
Pith IDFKTSRXTF, Pith's permanent record of this paper and its review
CitationDaniel Waldram, Jerome P. Gauntlett, Nakwoo Kim. "Supersymmetric AdS_3, AdS_2 and Bubble Solutions." arXiv:hep-th/0612253 (2006). https://pith.science/paper/FKTSRXTF
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The paper

The paper claims

A single fourth-order equation on a Kähler metric generates new supersymmetric $AdS_3$ solutions in type IIB and $AdS_2$ solutions in $D=11$ supergravity, with the sign of the Ricci scalar switching between AdS and bubble backgrounds.

The reading

The paper asks whether one local geometric condition can act as a factory for supersymmetric anti-de Sitter backgrounds in string and M-theory. Its answer is that a Kähler metric on a $2n+2$-dimensional space satisfying $$(1.1)$$ determines the internal geometry of both type IIB $AdS_3$ and $D=11$ $AdS_2$ solutions, with the flux fixed by the same Kähler data. The sign of the Ricci scalar decides the physical use: $R>0$ gives an $AdS$ factor, while $R<0$ gives a bubble geometry with an $S^3$ or $S^2$ factor. The authors then exhibit three ways to manufacture such metrics: an $S^2$ fibration over a positively curved Kähler-Einstein space, a rescaling of the Kähler geometry hidden in multi-charged superstar solutions, and a product of two-dimensional Kähler-Einstein spaces. If the construction holds up globally, it gives new holographic backgrounds for two-dimensional $(0,2)$ CFTs, conformal quantum mechanics, defect CFTs, and BPS bubble states.

What carries the argument

The load-bearing object is a Kähler metric (a metric whose associated two-form is closed) on a $2n+2$-dimensional space whose Ricci scalar and Ricci tensor satisfy $$(1.1)$$. In the $AdS_3$ case ($n=2$) the internal seven-manifold is $ds^2(Y_7)=1/4(dz+P)^2+e^{-4A}ds^2_6$ with $dP=R$ and $e^{-4A}=1/8R$; in the $AdS_2$ case ($n=3$) the internal nine-manifold is $ds^2(Y_9)=(dz+P)^2+e^{-3A}ds^2_8$ with $e^{-3A}=1/2R$. The Kähler condition makes the flux closed, and (1.1) makes the equation of motion hold, so the whole supergravity solution is reduced to finding a Kähler metric with the right sign of $R$. The paper's three constructions are concrete ways to solve that one equation: an $S^2$ fibration with metric $ds^2_{2n+2}=dρ^2/U+Uρ^2(Dφ)^2+ρ^2ds^2(KE^+_{2n})$, a rescaling of the multi-charged superstar Kähler metrics, and a direct product of two-dimensional Kähler-Einstein metrics.

Extended reading notes

Core claim

The central claim is that the fourth-order scalar condition $$(1.1)$$ is the right organizing equation for a broad class of supersymmetric $AdS_3$ and $AdS_2$ solutions, not just a technical consistency condition for one example. Starting from a warped product with an internal space built over a $2n+2$-dimensional Kähler metric, the authors show that the warp factor and the five-form or four-form flux are fixed by that metric, and that the only remaining equation is (1.1). They then produce explicit solutions: the six-dimensional case recovers the known type IIB $AdS_3$ family of [11], the eight-dimensional case gives a new one-parameter $D=11$ $AdS_2$ family, a non-compact limit gives $AdS_2$ backgrounds dual to three-dimensional $N=2$ SCFTs with point-like defects, and rescaled multi-charged superstar metrics give new $AdS_3$ and $AdS_2$ families with toric-like isometries. The paper also shows that the same metrics with $R<0$ yield bubble solutions, including uplifts of single-charged superstars and new product-of-Kähler-Einstein bubbles. The claim is primarily a local geometric construction; global regularity and flux quantisation are checked only in part and are explicitly left for future work in several families.

Load-bearing premise

The load-bearing premise is that the local Kähler metrics satisfying (1.1) can be completed to smooth compact internal spaces with properly quantised five-form or four-form flux; the paper checks regularity in places but explicitly postpones flux quantisation for the $D=11$ fibration family and for the new multi-charged $AdS$ families.

Editorial extensions

If this is right

  • The type IIB $AdS_3$ solutions have dual two-dimensional $(0,2)$ SCFTs, and the $D=11$ $AdS_2$ solutions have dual conformal quantum mechanics with two supercharges.
  • The non-compact $AdS_2$ solutions are dual to three-dimensional $N=2$ SCFTs coupled to point-like defects.
  • The bubble solutions describe BPS states in the dual conformal theories and preserve four supersymmetries.
  • The fibration construction recovers the known $AdS_3$ family of [11] and produces a new one-parameter $D=11$ $AdS_2$ family.
  • The product-of-Kähler-Einstein construction includes near-horizon geometries of D3-branes wrapping a holomorphic curve in a Calabi-Yau four-fold and M2-branes wrapping a holomorphic curve in a Calabi-Yau five-fold.

Reading between the lines

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

  • If flux quantisation can be arranged, the continuous parameters in the multi-charged families will be discretised by integrality, giving a countable family of dual CFTs rather than a continuum.
  • The defect interpretation suggests a direct holographic computation of defect central charge or entropy from the non-compact $AdS_2$ metric, which the paper does not attempt.
  • The same fourth-order condition may serve as a classification tool for near-horizon geometries of wrapped branes beyond the explicit fibration, superstar, and product constructions.
  • A useful stress test is to compare the product-of-Kähler-Einstein solutions with known wrapped-brane central charges; agreement would tie the new families to specific CFTs.
Original abstract

We present new supersymmetric AdS_3 solutions of type IIB supergravity and AdS_2 solutions of D=11 supergravity. The former are dual to conformal field theories in two dimensions with N=(0,2) supersymmetry while the latter are dual to conformal quantum mechanics with two supercharges. Our construction also includes AdS_2 solutions of D=11 supergravity that have non-compact internal spaces which are dual to three-dimensional N=2 superconformal field theories coupled to point-like defects. We also present some new bubble-type solutions, corresponding to BPS states in conformal theories, that preserve four supersymmetries.

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, 3,701 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.10 · human participants 0.01 · controlled comparison 0.01 · randomized assignment 0.01 · states quantitative result 0.68 · compares with prior results 0.07 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v2. Results and the main claim are underlined; .

We present new supersymmetric AdS_3 solutions of type IIB supergravity and AdS_2 solutions of D=11 supergravity. The former are dual to conformal field theories in two dimensions with N=(0,2) supersymmetry while the latter are dual to conformal quantum mechanics with two supercharges. Our construction also includes AdS_2 solutions of D=11 supergravity that have non-compact internal spaces which are dual to three-dimensional N=2 superconformal field theories coupled to point-like defects. We also present some new bubble-type solutions, corresponding to BPS states in conformal theories, that preserve four supersymmetries.

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 We present new supersymmetric AdS_3 solutions of type IIB supergravity and AdS_2 solutions of D=11 supergravity. contribution 0.97 0.96 0.63 asserted 1.00
s1 The former are dual to conformal field theories in two dimensions with N=(0,2) supersymmetry while the latter are dual to conformal quantum mechanics with two supercharges. interpretation 0.96 0.45 0.17 asserted 1.00
s2 Our construction also includes AdS_2 solutions of D=11 supergravity that have non-compact internal spaces which are dual to three-dimensional N=2 superconformal field theories coupled to point-like defects. contribution 0.56 0.93 0.14 asserted 1.00
s3 We also present some new bubble-type solutions, corresponding to BPS states in conformal theories, that preserve four supersymmetries. contribution 0.91 0.95 0.15 asserted 1.00

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

What was examined, and what was not

sources read
  • arXiv listing abstract v2
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

70 later papers cite it

Evidence: substantial. 49 of the citing papers share no author with it, and 11 of those carry a confident label from Pith's citation classifier.

Pith read 23 of the 203 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

Builds on it 3 of 10 papers with this label · 3 by the same authors

By the same authors

Uses its method or tool 2 of 7 papers with this label
  • Used the results in this paper to rewrite the metric in a form with the R-symmetry vector manifest.

    M2-branes on Discs and Multi-Charged Spindles (2021) · 0.81 · paraphrased: the licence does not allow quoting

  • Wrote the AdS_3 metric as a foliation by AdS_2 as in this paper to perform the duality chain.

    F-theory and AdS_3/CFT_2 (2,0) (2017) · 0.91 · paraphrased: the licence does not allow quoting

Compares with it 3 of 10 papers with this label · 2 by the same authors

By the same authors

  • Once we identify $v_1$ in the metric [ref] and the flux [ref] as v_1=√(3ℓ_12+ℓ_1), we reproduce the metric and the flux in [ref] [Here we denote $L$ used in [ref] by $L_GKW$.

    Uplifting dyonic AdS$_4$ black holes on seven-dimensional Sasaki-Einstein manifolds (2020) (same authors) · Comparison to known AdS$_2$ solutions · 0.98

  • Found its own black hole horizon metric to be precisely the metric of the AdS_2 solution constructed directly as in (6.15) of this paper, with length normalization as in this paper.

    A geometric dual of $c$-extremization (2018) (same authors) · 0.93 · paraphrased: the licence does not allow quoting

How the literature uses it

68 arXiv papers cite this in 201 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 · 118 sentences without a confident label

Contests it 3 papers
  • The uplift formula, [ref] , is given for the metric, [equation] and for the self-dual five-form flux, $F_(5) = G_(5)+*G_(5)$,[A sign error in the second term of the formula in [ref] is corrected in [ref] and [ref] .] [equation] where we define [equation] and $vol_5$ and $*_5$ denote the volume form and the Hodge dual with respect to the five-dimensional metric, $ds_5^2$, respectively.

    D3-branes and M5-branes wrapped on a topological disc · Uplift to type IIB supergravity · contest 0.76

  • Any supersymmetric solution of this model can be uplifted on $S^5$ to give a supersymmetric solution of type IIB supergravity using the results of [ref] .[As pointed out in [ref] there is a typo in the five-form flux in [ref] .

    Supersymmetric spindles · The $D=5$ gauged supergravity model · contest 0.80

  • As in [ref] we have corrected the sign of the second factor in [ref], compared with the expression given in [ref] .

    Twisted D3-brane and M5-brane compactifications from multi-charge spindles · Local form of the solutions · contest 0.81

Builds on it 10 papers
  • These uplift to regular $AdS_2×Y_9$ solutions, which generalise those of [ref] by an extra rotation parameter.

    Accelerating Black Holes and Spinning Spindles · Near horizon limit: $AdS_2×𝕎ℂℙ^1_[n_-,n_+]$ · 0.99

  • This solution was obtained by taking the Baryonic twist solution for $Y^p,q$ found in [ref] and further elucidated in [ref] and performing a beta deformation [ref] along the two directions of the two-torus in the geometry.

    $\mathcal{N}=(0,2)$ AdS$_3$ Solutions of Type IIB and F-theory with Generic Fluxes · A representative solution of the general case · 0.92

  • We also showed how the general class of $AdS$ solutions can be analytically continued to obtain general classes of 1/8 BPS bubble solutions with additional fluxes to the classes of solutions considered in [ref] .

    AdS Solutions Through Transgression · Conclusions · 1.00

Uses its method or tool 7 papers
  • With these ingredients to hand, and using [ref] [equation] where $R$ is the Ricci scalar of the eight-dimensional transverse Kähler metric, we may now compute the “entropy" given by [ref] (see equation (2.20) of [ref] ) [equation]

    Fibred GK geometry and supersymmetric $AdS$ solutions · $D=11$: $𝒴^,(KE_6^+)$ · 0.88

  • This is defined as a certain bilinear in the Killing spinors on $Y_7$ [ref] , and combining the general results of the latter reference with the form of the solution given in [ref] we can read off that this vector field is simply [equation] Here we have normalized the R-symmetry so that the Killing spinor on $Y_7$ has unit charge under the Lie derivative along this vector field, giving an explicit phase dependence of $^ϕ$.

    Twisted D3-brane and M5-brane compactifications from multi-charge spindles · Central charge and R-symmetry · 0.89

  • We will also construct rich new classes of explicit solutions by following a similar analysis to that of [ref] .

    AdS Solutions Through Transgression · Introduction · 0.95

Compares with it 10 papers
Cites it as background 29 papers

Discussion

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