|Electric charge||0 e|
|Beyond the Standard Model|
In theoretical physics, the dual graviton is a hypothetical elementary particle that is a dual of the graviton under electric-magnetic duality, as an S-duality, predicted by some formulations of supergravity in eleven dimensions.
The dual graviton was first hypothesized in 1980. It was theoretically modeled in 2000s, which was then predicted in eleven-dimensional mathematics of SO(8) supergravity in the framework of electric-magnetic duality. It again emerged in the E11 generalized geometry in eleven dimensions, and the E7 generalized vielbein-geometry in eleven dimensions. While there is no local coupling between graviton and dual graviton, the field introduced by dual graviton may be coupled to a BF model as non-local gravitational fields in extra dimensions.
The previously mentioned theories of dual graviton are in flat space. In de Sitter and anti-de Sitter spaces (A)dS, the massless dual graviton exhibits less gauge symmetries dynamics compared with those of Curtright field in flat space, hence the mixed-symmetry field propagates in more degrees of freedom. However, the dual graviton in (A)dS transforms under GL(D) representation, which is identical to that of massive dual graviton in flat space. This apparent paradox can be resolved using the unfolding technique in Brink, Metsaev, and Vasiliev conjecture. For the massive dual graviton in (A)dS, the flat limit is clarified after expressing dual field in terms of the Stueckelberg coupling of a massless spin-2 field with a Proca field.
Dual linearized gravity
where square brackets show antisymmetrization.
For 5-D spacetime, the spin-2 dual graviton is described by the Curtright field . The symmetry properties imply that
where is defined as
and the gauge symmetry of the Curtright field is
They fulfill the following Bianchi identities
where is the 5-D spacetime metric.
Massive dual gravity
In 4-D, the Lagrangian of the spinless massive version of the dual gravity is
where  The coupling constant appears in the equation of motion to couple the trace of the conformally improved energy momentum tensor to the field as in the following equation
So the zeroth interaction part, i.e., the third term in the Lagrangian, can be read as so the equation of motion becomes
where the is Young symmetrizer of such SO(2) theory.
For solutions of the massive theory in arbitrary N-D, i.e., Curtright field , the symmetrizer becomes that of SO(N-2).
Dual graviton coupling with BF theory
Here, is the curvature form, and is the background field.
In principle, it should similarly be coupled to a BF model of gravity as the linearized Einstein–Hilbert action in D > 4:
In similar manner while we define gravitomagnetic and gravitoelectic for the graviton, we can define electric and magnetic fields for the dual graviton. There are the following relation between the gravitoelectic field and gravitomagnetic field of the graviton and the gravitoelectic field and gravitomagnetic field of the dual graviton :
where denotes the Hodge dual.
Dual graviton in conformal gravity
The free (4,0) conformal gravity in D = 6 is defined as
It is easy to notice the similarity between the Lanczos tensor, that generates the Weyl tensor in geometric theories of gravity, and Curtright tensor, particularly their shared symmetry properties of the linearized spin connection in Einstein's theory. However, Lanczos tensor is a tensor of geometry in D=4, meanwhile Curtright tensor is a field tensor in arbitrary dimensions.
- Hull, C. M. (2001). "Duality in Gravity and Higher Spin Gauge Fields". Journal of High Energy Physics. 2001 (9): 27. arXiv:hep-th/0107149. Bibcode:2001JHEP...09..027H. doi:10.1088/1126-6708/2001/09/027.
- Bekaert, X.; Boulanger, N.; Henneaux, M. (2003). "Consistent deformations of dual formulations of linearized gravity: A no-go result". Physical Review D. 67 (4): 044010. arXiv:hep-th/0210278. Bibcode:2003PhRvD..67d4010B. doi:10.1103/PhysRevD.67.044010.
- de Wit, B.; Nicolai, H. (2013). "Deformations of gauged SO(8) supergravity and supergravity in eleven dimensions". Journal of High Energy Physics. 2013 (5): 77. arXiv:1302.6219. Bibcode:2013JHEP...05..077D. doi:10.1007/JHEP05(2013)077.
- Curtright, T. (1985). "Generalised Gauge Fields". Physics Letters B. 165 (4–6): 304. Bibcode:1985PhLB..165..304C. doi:10.1016/0370-2693(85)91235-3.
- West, P. (2012). "Generalised geometry, eleven dimensions and E11". Journal of High Energy Physics. 2012 (2): 18. arXiv:1111.1642. Bibcode:2012JHEP...02..018W. doi:10.1007/JHEP02(2012)018.
- Godazgar, H.; Godazgar, M.; Nicolai, H. (2014). "Generalised geometry from the ground up". Journal of High Energy Physics. 2014 (2): 75. arXiv:1307.8295. Bibcode:2014JHEP...02..075G. doi:10.1007/JHEP02(2014)075.
- Bizdadea, C.; Cioroianu, E. M.; Danehkar, A.; Iordache, M.; Saliu, S. O.; Sararu, S. C. (2009). "Consistent interactions of dual linearized gravity in D = 5: couplings with a topological BF model". European Physical Journal C. 63 (3): 491–519. arXiv:0908.2169. Bibcode:2009EPJC...63..491B. doi:10.1140/epjc/s10052-009-1105-0.
- Ogievetsky, V. I; Polubarinov, I. V (1965-11-01). "Interacting field of spin 2 and the einstein equations". Annals of Physics. 35 (2): 167–208. Bibcode:1965AnPhy..35..167O. doi:10.1016/0003-4916(65)90077-1. ISSN 0003-4916.
- Alshal, H.; Curtright, T. L. (2019-09-10). "Massive dual gravity in N spacetime dimensions". Journal of High Energy Physics. 2019 (9): 63. arXiv:1907.11537. Bibcode:2019JHEP...09..063A. doi:10.1007/JHEP09(2019)063. ISSN 1029-8479.
- Curtright, T. L.; Alshal, H. (2019-10-01). "Massive dual spin 2 revisited". Nuclear Physics B. 948: 114777. arXiv:1907.11532. Bibcode:2019NuPhB.94814777C. doi:10.1016/j.nuclphysb.2019.114777. ISSN 0550-3213.
- Boulanger, N.; Campoleoni, A.; Cortese, I. (July 2018). "Dual actions for massless, partially-massless and massive gravitons in (A)dS". Physics Letters B. 782: 285–290. arXiv:1804.05588. Bibcode:2018PhLB..782..285B. doi:10.1016/j.physletb.2018.05.046.
- Basile, Thomas; Bekaert, Xavier; Boulanger, Nicolas (2016-06-21). "Note about a pure spin-connection formulation of general relativity and spin-2 duality in (A)dS". Physical Review D. 93 (12): 124047. arXiv:1512.09060. Bibcode:2016PhRvD..93l4047B. doi:10.1103/PhysRevD.93.124047. ISSN 2470-0010.
- Brink, L.; Metsaev, R.R.; Vasiliev, M.A. (October 2000). "How massless are massless fields in AdS". Nuclear Physics B. 586 (1–2): 183–205. arXiv:hep-th/0005136. Bibcode:2000NuPhB.586..183B. doi:10.1016/S0550-3213(00)00402-8.
- Basile, Thomas; Bekaert, Xavier; Boulanger, Nicolas (May 2017). "Mixed-symmetry fields in de Sitter space: a group theoretical glance". Journal of High Energy Physics. 2017 (5): 81. arXiv:1612.08166. Bibcode:2017JHEP...05..081B. doi:10.1007/JHEP05(2017)081. ISSN 1029-8479.
- Danehkar, A. (2019). "Electric-magnetic duality in gravity and higher-spin fields". Frontiers in Physics. 6: 146. Bibcode:2019FrP.....6..146D. doi:10.3389/fphy.2018.00146.
- Curtright, Thomas L. (2019-10-01). "Massive dual spinless fields revisited". Nuclear Physics B. 948: 114784. arXiv:1907.11530. Bibcode:2019NuPhB.94814784C. doi:10.1016/j.nuclphysb.2019.114784. ISSN 0550-3213.
- Henneaux, M.; Teitelboim, C. (2005). "Duality in linearized gravity". Physical Review D. 71 (2): 024018. arXiv:gr-qc/0408101. Bibcode:2005PhRvD..71b4018H. doi:10.1103/PhysRevD.71.024018.
- Henneaux, M., "E10 and gravitational duality" https://www.theorie.physik.uni-muenchen.de/activities/workshops/archive_workshops_conferences/jointerc_2014/henneaux.pdf
- Hull, C. M. (2000). "Symmetries and Compactifications of (4,0) Conformal Gravity". Journal of High Energy Physics. 2000 (12): 007. arXiv:hep-th/0011215. Bibcode:2000JHEP...12..007H. doi:10.1088/1126-6708/2000/12/007.
- Bampi, Franco; Caviglia, Giacomo (April 1983). "Third-order tensor potentials for the Riemann and Weyl tensors". General Relativity and Gravitation. 15 (4): 375–386. Bibcode:1983GReGr..15..375B. doi:10.1007/BF00759166. ISSN 0001-7701.