REVIEW
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.
T0 · AI review
Why Pith says this
Highlight any text to comment on it.
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
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
- 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.
The abstract, sentence by sentence
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
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| 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 was examined, and what was not
- arXiv listing abstract v2
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
References
How the literature uses it
34 arXiv papers cite this in 68 sentences
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
-
That there must be supersymmetric solutions of this type is clear from the analysis for minimal gauged supergravity in [ref] .
Rotating BPS black holes in matter-coupled AdS(4) supergravity · Constant scalars · 0.97
Cites it as background 12 papers
-
The Euclidean supersymmetric gravity solution of interest is studied in some detail in [ref] , see also [ref] , and can be written as
Higher-Derivative Supergravity, AdS$_4$ Holography, and Black Holes · $U(1) ×U(1)$ squashed sphere · 0.81
-
Hence we refer the readers to [ref] as well as earlier works such as [ref] for a comprehensive analysis of the background concerning its global structure, the distinctions between NUTs and bolts, supersymmetry, moduli spaces, and constraints for uplift to 11d supergravity.
Perturbatively exact supersymmetric partition functions of ABJM theory on Seifert manifolds and holography · Supergravity dual · 0.99
-
Then, we solve it for an already known solution, namely the black hole carrying not only mass but also NUT charge (also called “magnetic mass"), and both electric and magnetic Maxwell charges as well (see e.g. [ref] ).
Supersymmetry and Gravitational Duality · The BPS Taub-NUT charged solution in $N=2$ supergravity · 0.80
Discussion
Disagree with the review, or know something it missed? Leave a comment, highlight any passage above to comment on it, or challenge this review formally.