Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Ceresole, Anna"'
We look for a classical double copy structure between gravity and electrodynamics by connecting the descriptions of the scattering of two point masses, and of two point charges, in terms of perturbative (post-Minkowskian or post-Lorentzian) expansion
Externí odkaz:
http://arxiv.org/abs/2312.01478
Autor:
Ceresole, Anna, Dall'Agata, Gianguido, Ferrara, Sergio, Trigiante, Mario, Van Proeyen, Antoine
We consider N=2 supergravity theories that have the same spectrum as the R+R^2 supergravity, as predicted from the off-shell counting of degrees of freedom. These theories describe standard N=2 supergravity coupled to one or two long massive vector m
Externí odkaz:
http://arxiv.org/abs/1404.1745
We analyze some properties of the four dimensional supergravity theories which originate from five dimensions upon reduction. They generalize to N>2 extended supersymmetries the d-geometries with cubic prepotentials, familiar from N=2 special K\"ahle
Externí odkaz:
http://arxiv.org/abs/1210.5983
By exploiting the role of the horizontal symmetry SL(2,R), we extend the analysis and classification of two-centered extremal black hole charge configurations to the case of "small" single-centered constituents. These latter are seen to decrease the
Externí odkaz:
http://arxiv.org/abs/1104.4652
Autor:
Ceresole, Anna, Ferrara, Sergio
We discuss some of the basic features of extremal black holes in four-dimensional extended supergravities. Firstly, all regular solutions display an attractor behavior for the scalar field evolution towards the black hole horizon. Secondly, they can
Externí odkaz:
http://arxiv.org/abs/1009.4175
Publikováno v:
Phys.Lett.B693:366-372,2010
We provide an intrinsic classification of the large and small orbits for N=2, 4D extremal black holes on symmetric spaces which does not depend on the duality frame used for the charges or on the special coordinates. A coordinate independent formula
Externí odkaz:
http://arxiv.org/abs/1006.2007
Publikováno v:
Nucl.Phys.B832:358-381, 2010
We provide a general strategy to obtain the superpotential W for both BPS and non-BPS extremal black holes in N=2 four dimensional supergravities based on symmetric spaces. This extends the construction of W in terms of U-duality invariants that was
Externí odkaz:
http://arxiv.org/abs/0910.2697
Publikováno v:
Nucl.Phys.B824:239-253,2010
We derive explicitly the superpotential W for the non-BPS branch of N=2 extremal black holes in terms of duality invariants of special geometry. Although this is done for a one-modulus case (the t^3 model), the example gives $Z \neq 0$ black holes an
Externí odkaz:
http://arxiv.org/abs/0908.1110
Publikováno v:
Phys.Rev.D80:125033,2009
We use the connection between the U-duality groups in d=5 and d=4 to derive properties of the N=8 black hole potential and its critical points (attractors). This approach allows to study and compare the supersymmetry features of different solutions.<
Externí odkaz:
http://arxiv.org/abs/0908.1069
Autor:
Cardoso, Gabriel Lopes, Ceresole, Anna, Dall'Agata, Gianguido, Oberreuter, Johannes M., Perz, Jan
Publikováno v:
JHEP 0710:063,2007
We construct interpolating solutions describing single-center static extremal non-supersymmetric black holes in four-dimensional N=2 supergravity theories with cubic prepotentials. To this end, we derive and solve first-order flow equations for rotat
Externí odkaz:
http://arxiv.org/abs/0706.3373