REVIEW
Matter Coupled F(4) Gauged Supergravity Lagrangian
High Energy Physics - Theory · Submitted 18 Apr 2001 · 15 references
Pith's verdict: The reference action for matter-coupled F(4) supergravity, sound within its stated scope; the one thing worth pressing a referee on is the unshown Fierz verification behind the ρ(2ψ) term.
T0 · AI review
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Referee report
The paper
The paper claims
The paper constructs the first explicit Lagrangian for six-dimensional F(4) supergravity coupled to any number of vector multiplets, in both ungauged and gauged form.
The reading
What carries the argument
The load-bearing device is the free differential algebra extending the $F(4)$ Maurer-Cartan equations to include the two-form $B$ and the singlet vector $A^0$, in which the combination $dA^0 - m B$ appears from the outset. That single combination is what later becomes the massive two-form and the $g=3m$ condition. On top of it, the authors solve the superspace Bianchi identities for the matter-coupled curvatures, and the solution requires a two-gravitino term $rho^{(2psi)}$ in the gravitino curvature of Eq. (A.7) in order for the three-gravitino sector to close. The gauging then enters as fermionic shifts $S_{AB}$, $N_{AB}$, $M^I_{AB}$ proportional to $g$, $g'$ and $m$, built from
Extended reading notes
Core claim
The paper's claim is that the complete $D=6$, $N=2$ $F(4)$ supergravity Lagrangian coupled to $n$ vector multiplets exists and can be written explicitly, up to four-fermion terms. Two features carry the result. First, the gauging: the $F(4)$ algebra forces the $SU(2)$ gauge coupling $g$ and the antisymmetric-tensor mass $m$ to appear together, and the closure of the Maurer-Cartan equations requires $g=3m$; at that ratio the potential has a supersymmetric AdS$_6$ extremum with radius fixed by $m$, and the singlet vector $A^0_mu$ is eaten by the two-form $B_{mu nu}$, which becomes massive. Second, the matter coupling: the $4+n$ vectors are rotated into the $SU(2)$ gravitino frame by the coset representative $L^Lambda{}_Sigma$, producing dressed field strengths $T_{[AB]}$, $T_{(AB)}$, $T_I$, and the scalar potential in Eq. (5.9), rewritten in Eq. (5.21) as a sum of squares of the fermionic shifts plus an $m^2 e^{-6sigma} N_{00}$ term. The authors check the potential by a supersymmetry Ward identity, finding a cancellation that requires the non-trivial relation $D^t_I C^I_t = 0$, and they extract the linearised mass spectrum, which reproduces the values obtained independently from conformal dimensions of the five-dimensional singleton multiplets.
Load-bearing premise
The consistency of the transformation laws rests on the claim that once the three-gravitino sector of the Bianchi identities closes, all lower sectors close automatically on shell, while the three-fermion terms of the form $psichi chi$, $psilambda lambda$ and $psilambda chi$ are explicitly left uncomputed.
Editorial extensions
If this is right
- The complete Kaluza-Klein spectrum of the warped $AdS_6$ reduction can in principle be computed, including the flavour quantum numbers under $G$ that the earlier multiplet-level analysis could not fix.
- The relation $g = 3m$ between the gauge coupling and the AdS radius is derived from the algebra rather than imposed, so the AdS$_6$ vacuum radius is fixed by the gauging.
- The two-form $B_{mu nu}$ acquires mass $m$ through the Higgs mechanism, with $A^0_mu$ supplying its longitudinal degree of freedom; the Lagrangian can be rewritten with no reference to $A^0_mu$ at all.
- The gradient flow equations of Eqs. (5.26)-(5.32), relating derivatives of the fermionic shifts to the spin-one-half mass matrices, give a starting point for studying renormalisation group flows in the dual five-dimensional theory.
- The linearised masses $m^2_sigma = -6$, $m^2_{q^{I0}} = -4$, $m^2_{q^{Ir}} = -6$, $m_psi = 2$, $m_lambda = m_chi = 1$, $m^2_B = 2$ in units of $R_{AdS}^{-2}$ match the values read off from the conformal dimensions listed in Table 1.
Reading between the lines
- Because the gauged group must be $SU(2)times G$ with $dim G = n$ and $G subset SO(n)$, the construction only covers cosets of a special size; a reader wanting to describe a dual flavour group of different dimension would need a different truncation or a different scalar manifold.
- The potential written as squares of the shifts plus a negative $m^2$ term has the shape of a superpotential-derived potential, and the gradient flow equations reinforce that reading; this suggests the stability of the $g=3m$ vacuum could be argued structurally rather than by expanding to quadratic order.
- The omitted three-fermion terms of the form $psichi chi$, $psilambda lambda$, $psilambda chi$ would matter for any use of this action beyond the classical bosonic spectrum, for instance in counting BPS states or in loop computations, so the
- The matching of the mass spectrum to the singleton-derived conformal dimensions is a consistency check rather than a derivation within this paper; an independent Kaluza-Klein computation on the warped background would turn it into a genuine test.
Original abstract
We construct the so far unknown Lagrangian of D=6, N=2 F(4) Supergravity coupled to an arbitrary number of vector multiplets whose scalars span the coset manifold SO(4,n)/{SO(4) x SO(n)}. This is done first in the ungauged case and then extended to the compact gauging of SU(2) x G, where SU(2) is the R-symmetry diagonal subgroup of SU(2)_L x SU(2)_R = SO(4) and G is a compact subgroup of SO(n), n being the number of vector multiplets, and such that dim G = n. The knowledge of the Lagrangian allows in principle to refine the AdS_6/CFT_5 correspondence already discussed, as far as supersymmetric multiplets are concerned, in a previous related paper. With respect to the latter we also give a more exaustive treatment of the construction of the theory at the level of superspace Bianchi identities and in particular of the scalar potential.
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 construct the so far unknown Lagrangian of D=6, N=2 F(4) Supergravity coupled to an arbitrary number of vector multiplets whose scalars span the coset manifold SO(4,n)/{SO(4) x SO(n)}. This is done first in the ungauged case and then extended to the compact gauging of SU(2) x G, where SU(2) is the R-symmetry diagonal subgroup of SU(2)_L x SU(2)_R = SO(4) and G is a compact subgroup of SO(n), n being the number of vector multiplets, and such that dim G = n. The knowledge of the Lagrangian allows in principle to refine the AdS_6/CFT_5 correspondence already discussed, as far as supersymmetric multiplets are concerned, in a previous related paper. With respect to the latter we also give a more exaustive treatment of the construction of the theory at the level of superspace Bianchi identities and in particular of the scalar potential.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We construct the so far unknown Lagrangian of D=6, N=2 F(4) Supergravity coupled to an arbitrary number of vector multiplets whose scalars span the coset manifold SO(4,n)/{SO(4) x SO(n)}. | contribution 0.97 | 0.96 | 0.78 | asserted 1.00 |
| s1 | This is done first in the ungauged case and then extended to the compact gauging of SU(2) x G, where SU(2) is the R-symmetry diagonal subgroup of SU(2)_L x SU(2)_R = SO(4) and G is a compact subgroup of SO(n), n being the number of vector multiplets, and such that dim G = n. | method 0.90 | 0.94 | 0.18 | asserted 1.00 |
| s2 | The knowledge of the Lagrangian allows in principle to refine the AdS_6/CFT_5 correspondence already discussed, as far as supersymmetric multiplets are concerned, in a previous related paper. | interpretation 0.91 | 0.22 | 0.12 | hedged possibility 0.97 |
| s3 | With respect to the latter we also give a more exaustive treatment of the construction of the theory at the level of superspace Bianchi identities and in particular of the scalar potential. | contribution 0.95 | 0.91 | 0.09 | asserted 1.00 |
What was examined, and what was not
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References
How later papers used it
46 later papers cite it
1 later paper by other authors is listed below: 1 used its method or tool.
Uses its method or tool 1 of 2 papers with this label
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Studied the consistent truncation of matter coupled F(4) gauged supergravity from this paper on a Riemann surface to construct black hole solutions asymptotic to the AdS_4 vacuum.
Spindle black holes and theories of class $\mathcal{F}$ (2024) · 0.83 · paraphrased: the licence does not allow quoting
How the literature uses it
40 arXiv papers cite this in 112 sentences
Papers citing it · 72 sentences without a confident label
Builds on it 2 papers
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The full construction by using the superspace approach can be found in [ref] .
Twisted compactification of N=2 5D SCFTs to three and two dimensions from F(4) gauged supergravity · Matter coupled $N=(1,1)$ $SU(2)×SU(2)$ gauged supergravity in six dimensions · 0.81
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It has been further developed in [ref] by implementing the matter couplings and gaugings.
On Black Hole Effective Potential in 6D/7D N=2 Supergravity · Appendix B: Geometrical approach · 0.85
Uses its method or tool 2 papers
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However, in this paper, we will restrict ourselves to the construction of [ref] and [ref] .
Holographic RG flows in six dimensional F(4) gauged supergravity · Matter coupled $F(4)$ gauged supergravity · 0.86
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To construct black hole solutions asymptotic to the $AdS_4$ vacuum, which serve as dual descriptions for three-dimensional class $ℱ$ theories, we delve into the consistent truncation of matter coupled $F(4)$ gauged supergravity, [ref] , on a Riemann surface, [ref] .
Spindle black holes and theories of class $\mathcal{F}$ · Introduction · 0.83
Uses its data or values 1 paper
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Its normalized mass at the boundary is given by [ref] [equation] whence $Δ_X=3$.
Surface defects in the D4 $-$ D8 brane system · One-Point Correlation Funtions · 0.80
Compares with it 3 papers
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Using these, the dimension-dependent part of the scalar potential, equation [ref] reduces to [equation] Here we have defined [equation] This gives the correct scalar potential of half-maximal gauged SUGRA [ref] , up to the correct choice of the coefficients $λ$ and $γ$ when $D = 6$.
Half-maximal supersymmetry from exceptional field theory · Reduction of scalar potential · 0.92
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This result exactly agrees with the analysis of [ref] and [ref] .
Holographic RG flows in six dimensional F(4) gauged supergravity · Critical points of the matter coupled $F(4)$ gauged supergravity · 1.00
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The potential admits an AdS$_6$ background for $g=3m$, as the pure F(4) gauged supergravity [ref] .
4d F(4) gauged supergravity and black holes of class $\mathcal{F}$ · Matter coupled F(4) gauged supergravity · 0.84
Cites it as background 26 papers
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We collect here few relevant conventions and formulae used in [ref] .
6D attractors and black hole microstates · Conventions · 0.84
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The first $N=(1,1)$, or $F(4)$, gauged supergravity has been constructed long ago in [ref] , and the generalization to matter-coupled theories has been constructed in [ref] and [ref] .
Holographic RG flows and Janus interfaces from ISO(3)xU(1) F(4) gauged supergravity · Introduction · 0.96
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We will give only information relevant to the study of supersymmetric RG flows and refer the reader to [ref] and [ref] for more details and complete formulae.
Gravity duals of 5D N=2 SYM from F(4) gauged supergravity · Matter coupled $F(4)$ gauged supergravity and the dual $N=2$ Super Yang-Mills · 0.89
Discussion
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