Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Alfredo Grillo"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-32 (2024)
Abstract We study linear massive scalar charged perturbations of Topological Stars in the fuzzball and in the black hole (Black String) regimes. The objects that naturally couple to the electric 3-form field strength of these solutions are charged st
Externí odkaz:
https://doaj.org/article/ac2c73504be74dc2acb9ea96b09e05c6
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 12, Pp 1-30 (2023)
Abstract Topological stars, or top stars for brevity, are smooth horizonless static solutions of Einstein-Maxwell theory in 5-d that reduce to spherically symmetric solutions of Einstein-Maxwell-Dilaton theory in 4-d. We study linear scalar perturbat
Externí odkaz:
https://doaj.org/article/777b283204eb4824ba3ba376c01971d0
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 1, Pp 1-45 (2022)
Abstract We exploit the recently proposed correspondence between gravitational perturbations and quantum Seiberg-Witten curves to compute the spectrum of quasi-normal modes of asymptotically flat Kerr Newman black holes and establish detailed gauge/g
Externí odkaz:
https://doaj.org/article/438cd4c81fa54408810d2effdc392dbf
Autor:
Massimo Bianchi, Dario Consoli, Alfredo Grillo, Josè Francisco Morales, Paolo Pani, Guilherme Raposo
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 1, Pp 1-32 (2021)
Abstract We extend and refine a general method to extract the multipole moments of arbitrary stationary spacetimes and apply it to the study of a large family of regular horizonless solutions to N $$ \mathcal{N} $$ = 2 four-dimensional supergravity c
Externí odkaz:
https://doaj.org/article/9c7d87a23a10461eb753e90b302cd3ea
Publikováno v:
Physics Letters B, Vol 824, Iss , Pp 136837- (2022)
QNMs govern the linear response to perturbations of BHs, D-branes and fuzzballs and the gravitational wave signals in the ring-down phase of binary mergers. A remarkable connection between QNMs of neutral BHs in 4d and quantum SW geometries describin
Externí odkaz:
https://doaj.org/article/b0c2ae2ba9eb461da099214af69d363e
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2022, Iss 1, Pp 1-45 (2022)
Journal of High Energy Physics, Vol 2022, Iss 1, Pp 1-45 (2022)
We exploit the recently proposed correspondence between gravitational perturbations and quantum Seiberg-Witten curves to compute the spectrum of quasi-normal modes of asymptotically flat Kerr Newman black holes and establish detailed gauge/gravity di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b640a2df25eaf22b7129bb14cda62be
http://arxiv.org/abs/2109.09804
http://arxiv.org/abs/2109.09804
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 3, Pp 1-24 (2021)
Journal of High Energy Physics
Journal of High Energy Physics
We study massless geodesics near the photon-spheres of a large family of solutions of Einstein-Maxwell theory in five dimensions, including BHs, naked singularities and smooth horizon-less JMaRT geometries obtained as six-dimensional uplifts of the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed599f751c4963f20ab4108263db64a4
http://hdl.handle.net/2108/289611
http://hdl.handle.net/2108/289611
Autor:
Alfredo Grillo, Paolo Pani, Dario Consoli, Jose F. Morales, Guilherme Raposo, Massimo Bianchi
Publikováno v:
Physical Review Letters
Within General Relativity, the unique stationary solution of an isolated black hole is the Kerr spacetime, which has a peculiar multipolar structure depending only on its mass and spin. We develop a general method to extract the multipole moments of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79b19a40a86fca52de6515f34900bb3c
http://hdl.handle.net/11573/1474269
http://hdl.handle.net/11573/1474269
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2019, Iss 5, Pp 1-25 (2019)
Journal of High Energy Physics, Vol 2019, Iss 5, Pp 1-25 (2019)
Black holes absorb any particle impinging with an impact parameter below a critical value. We show that 2- and 3-charge fuzzball geometries exhibit a similar trapping behaviour for a selected choice of the impact parameter of incoming massless partic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c87f28510fe6090cffd0c36f5e8669c
https://doi.org/10.1007/jhep05(2019)126
https://doi.org/10.1007/jhep05(2019)126
Autor:
Taishi Ikeda, Massimo Bianchi, Alfredo Grillo, Dario Consoli, Paolo Pani, Guilherme Raposo, Jose F. Morales
Publikováno v:
Physical Review D. 104(6)
Deep conceptual problems associated with classical black holes can be addressed in string theory by the ``fuzzball'' paradigm, which provides a microscopic description of a black hole in terms of a thermodynamically large number of regular, horizonle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d7b88831e0d6b2e349b502e4495c2d8