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Supersymmetry of topological Kerr-Newmann-Taub-NUT-aDS spacetimes

High Energy Physics - Theory · Submitted 9 Mar 2000 · 31 references

Pith's verdict: Solid technical extension with a clean PD factorization and a genuinely interesting SO(2) duality; the exact supersymmetry fractions for the rotating and PD cases are asserted from a necessary condition rather than constructed.

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arXiv IDhep-th/0003071 (version 2)
Pith ID62GT4YUS, Pith's permanent record of this paper and its review
CitationN. Alonso-Alberca, P.Meessen, T. Ortin. "Supersymmetry of topological Kerr-Newmann-Taub-NUT-aDS spacetimes." arXiv:hep-th/0003071 (2000). https://pith.science/paper/62GT4YUS
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Referee report
The paper

The paper claims

Adding NUT charge and spin to anti-de Sitter black holes leaves at most a quarter of the supersymmetry, and the surviving sector has a hidden rotation symmetry.

The reading

The paper asks which members of a broad family of four-dimensional anti-de Sitter solutions — charged, rotating black holes with NUT charge, their non-rotating limits, and the near-horizon Robinson-Bertotti-type geometries — can still be supersymmetric in gauged $N=2$, $d=4$ supergravity. The authors first write down the missing solutions: the topological Kerr-Newman-anti-de Sitter metrics extended with NUT charge, plus cosmological Robinson-Bertotti geometries built from $AdS_2$ times a sphere, torus, or higher-genus Riemann surface, and they show these all arise as limits of the general Plebanski-Demianski solution. They then translate the Killing spinor equation into algebraic conditions on the parameters by computing the integrability condition, and find that the constraints collapse to a pair of factorized equations, $g[MP+NQ]=0$ and $B_+B_-=0$. The concrete payoff is a table of parameter choices that admit Killing spinors, with the result that generic solutions keep only one quarter of the supersymmetry, while half-supersymmetric cases are non-rotating. A second payoff is that the supersymmetric Plebanski-Demianski sector is invariant under a simultaneous rotation of mass with NUT charge and electric with magnetic charge, even though the gauged theory as a whole has no electric-magnetic duality.

What carries the argument

The engine is the integrability condition $[D_+ , D_-]$-style commutator of the supercovariant derivative, which must vanish for a Killing spinor to exist and which reduces to an algebraic expression in the Weyl tensor, the covariant derivative of the field strength, and terms proportional to the gauge coupling $g$. Evaluating it on a suitable vierbein turns a functional differential problem into a matrix condition on the parameters, and the determinant of that matrix factorizes into $B_+B_-$, which is what makes an exhaustive parameter classification possible. The factorization is the load-bearing structure: it is what lets the authors read off the Bogomol'nyi bound, spot the mass-NUT and electric-magnetic rotation symmetry, and check that the rotating, non-rotating and Plebanski-Demianski results agree under the coordinate and parameter redefinitions collected in the appendix.

Extended reading notes

Core claim

The central claim is that supersymmetry of these solutions is governed by two algebraic conditions. The first, $g[MP+NQ]=0$, is a constraint linking mass $M$, NUT charge $N$, electric charge $Q$ and magnetic charge $P$; the second, $B_+B_-=0$ with $B_+B_-$ built from $M^2+N^2$ and $Q^2+P^2$, plays the role of a saturated Bogomol'nyi bound. Solving them for the non-rotating topological case yields four classes: two that are locally $AdS_4$ and preserve all supersymmetry, one half-supersymmetric class generalizing $M=|Q|$ with an induced magnetic charge proportional to the NUT charge, and one quarter-supersymmetric class that exists only for nonzero gauge coupling and generalizes Romans' global monopole. For the rotating case the same factorization holds with $M$ and $N$ shifted by angular momentum terms, and the authors report that in every case they examined, switching on rotation takes a half-supersymmetric solution down to one quarter. For the general Plebanski-Demianski family the conditions become $M^2=(E_+)(Q^2)$ and $N^2=(E_+)(P^2)$-type relations that rotate into each other under $M' = M - N$ mixing and $Q' = Q + P$ mixing with a common angle, so the supersymmetric locus itself, not the full theory, carries a continuous $SO(2)$ duality.

Load-bearing premise

The paper reads the number of supersymmetries off the kernel of a condition that is only necessary for a Killing spinor to exist, and does not display explicit spinors for the rotating or Plebanski-Demianski cases, so the stated fractions assume that every solution of that condition really lifts to a spinor.

Editorial extensions

If this is right

  • Any member of the topological Kerr-Newman-Taub-NUT-anti-de Sitter family that satisfies $g[MP+NQ]=0$ and $B_+B_-=0$ admits Killing spinors, giving a finite checklist rather than a search over continuous parameters.
  • Half-supersymmetric solutions in this family are necessarily non-rotating, so angular momentum costs exactly one further half of the supersymmetry.
  • The near-horizon Robinson-Bertotti-type geometry of the quarter-supersymmetric magnetic monopole solution has enhanced supersymmetry, preserving one half instead of one quarter at the horizon.
  • The supersymmetric Plebanski-Demianski locus is closed under a simultaneous rotation of $(M,N)$ and $(Q,P)$, so statements about a purely electric supersymmetric solution can be transported to a purely magnetic or dyonic one within that locus.

Reading between the lines

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

  • If the mass-NUT and electric-magnetic rotation is a genuine symmetry of the supersymmetric sector rather than an artifact of the parameterization, it suggests the physical charge combinations that enter the superalgebra are not $(M,N,Q,P)$ separately but rotation-invariant pairings of them; the authors themselves note the transformation looks very nonlinear in terms of physical charges.
  • The quarter-supersymmetric solutions have no known interpretation as intersections of half-supersymmetric objects, which is the standard bookkeeping in ungauged supergravity; the gauged magnetic-charge solutions therefore mark a structural difference between the gauged and ungauged cases rather than a technical one.
  • A natural check would be to see whether the same factorized bound appears for topological horizons in higher-dimensional gauged supergravity, where the analogue of the genus parameter and the NUT charge both exist.
  • The rotation symmetry, if it survives quantization, would relate spectra of states carrying different NUT charge, which is testable in principle against any microscopic counting for these backgrounds.
Original abstract

We extend the topological Kerr-Newman-aDS solutions by including NUT charge and find generalizations of the Robinson-Bertotti solution to the negative cosmological constant case with different topologies. We show how all these solutions can be obtained as limits of the general Plebanski-Demianski solution. We study the supersymmetry properties of all these solutions in the context of gauged N=2,d=4 supergravity. Generically they preserve at most 1/4 of the total supersymmetry. In the Plebanski-Demianski case, although gauged N=2,d=4 supergravity does not have electric-magnetic duality, we find that the family of supersymmetric solutions still enjoys a sort of electric-magnetic duality in which electric and magnetic charges and mass and Taub-NUT charge are rotated simultaneously.

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, 4,392 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.68 · human participants 0.01 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.95 · compares with prior results 0.48 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

We extend the topological Kerr-Newman-aDS solutions by including NUT charge and find generalizations of the Robinson-Bertotti solution to the negative cosmological constant case with different topologies. We show how all these solutions can be obtained as limits of the general Plebanski-Demianski solution. We study the supersymmetry properties of all these solutions in the context of gauged N=2,d=4 supergravity. Generically they preserve at most 1/4 of the total supersymmetry. In the Plebanski-Demianski case, although gauged N=2,d=4 supergravity does not have electric-magnetic duality, we find that the family of supersymmetric solutions still enjoys a sort of electric-magnetic duality in which electric and magnetic charges and mass and Taub-NUT charge are rotated simultaneously.

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 extend the topological Kerr-Newman-aDS solutions by including NUT charge and find generalizations of the Robinson-Bertotti solution to the negative cosmological constant case with different topologies. contribution 0.97 0.95 0.21 asserted 1.00
s1 We show how all these solutions can be obtained as limits of the general Plebanski-Demianski solution. contribution 0.49 0.92 0.08 asserted 1.00
s2 We study the supersymmetry properties of all these solutions in the context of gauged N=2,d=4 supergravity. contribution 0.99 0.94 0.11 asserted 0.88
s3 Generically they preserve at most 1/4 of the total supersymmetry. result 1.00 0.87 0.26 asserted 0.85
s4 In the Plebanski-Demianski case, although gauged N=2,d=4 supergravity does not have electric-magnetic duality, we find that the family of supersymmetric solutions still enjoys a sort of electric-magnetic duality in which electric and magnetic charges and mass and Taub-NUT charge are rotated simultaneously. result 0.97 0.95 0.30 asserted 0.99

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
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not examined
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  • figures and tables
  • references and citing sentences
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  • S sections
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  • C citations
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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 the literature uses it

34 arXiv papers cite this in 68 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 · 46 sentences without a confident label

Contests it 1 paper
  • It is perhaps surprising that the Carter-Plebański family leads to spindles, since its Lorentzian version contains only the Kerr-Newman-NUT-AdS, Reissner-Nordström-NUT-AdS and the AdS-C-metric [ref] [Note that in [ref] it is incorrectly stated that the Carter-Plebański solution is the most general Plebański-Demianski solution.], whereas the conical singularities of the spindle are associated to a non-zero acceleration, which is present only in the more general Plebański-Demianski family [ref] [See also [ref] .].

    NUTs, Bolts, and Spindles · Introduction · contest 0.86

Builds on it 1 paper
  • In this paper we want to pick up the threads on these developments and show that the recently proposed thermodynamics can readily be extended to the charged Lorentzian Taub–NUT solution of the Einstein–Maxwell theory [ref] (see also [ref] for the higher-dimensional generalizations).

    Thermodynamics and Phase Transitions of NUTty Dyons · Introduction · 0.86

Uses its method or tool 2 papers
  • By examining the integrability conditions for [ref], as in [ref] we find that supersymmetry implies that the five parameters are constrained by the following two conditions [equation] With $α0$, and $m>0$ we must have $g>0$.

    Accelerating Black Holes and Spinning Spindles · Supersymmetric and extremal limits · 0.87

  • First we compute the supercurrent from the Lagrangian of minimal $D=4$ $N=2$ gauged supergravity following the conventions of [ref] (which is written in 1.5-formalism): [equation] where $ψ= i ψ^† γ_0, e=√(detg_μν),$ [equation] and [equation] The spin connection satisfies [equation] for a given vielbein $e^a = e_μ^a dx^μ$.

    On BPS bounds in D=4 N=2 gauged supergravity · Supercharges of minimal gauged supergravity · 0.99

Compares with it 1 paper
  • These are precisely the conditions on the electric and magnetic charge found in [ref] , for which the Reissner-Nordström-Taub-NUT-AdS solution is supersymmetric[Actually, the conditions given in [ref] are $Q=∓Ml/(2N)$ and $P=±(2N^2/l-l/2)$, corresponding to vanishing $B_∓$ in (3.10), (3.12) of [ref] .

    Nut-charged black holes in matter-coupled N=2, D=4 gauged supergravity · Constant scalars · 0.89

Cites it as support 1 paper
Cites it as background 12 papers

Discussion

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