Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Jan B. Gutowski"'
Autor:
Jan B. Gutowski, Wafic Sabra
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 2, Pp 1-19 (2021)
Journal of High Energy Physics
Journal of High Energy Physics
We classify all supersymmetric solutions of minimal D=4 gauged supergravity with (2,2) signature and a positive cosmological constant which admit exactly one Killing spinor. This classification produces a geometric structure which is more general tha
Autor:
D. Farotti, Jan B. Gutowski
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-32 (2021)
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-32 (2021)
Extreme near-horizon geometries in D=11 supergravity preserving four supersymmetries are classified. It is shown that the Killing spinors fall into three possible orbits, corresponding to pairs of spinors defined on the spatial cross-sections of the
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 3, Pp 1-70 (2021)
JOURNAL OF HIGH ENERGY PHYSICS
Journal of High Energy Physics
JOURNAL OF HIGH ENERGY PHYSICS
Journal of High Energy Physics
We present a modified implementation of the Euclidean action formalism suitable for studying the thermodynamics of a class of cosmological solutions containing Killing horizons. To obtain a real metric of definite signature, we perform a `triple Wick
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 3, Pp 1-59 (2017)
Journal of High Energy Physics
Journal of High Energy Physics
We show that all smooth Killing horizons with compact horizon sections of 4-dimensional gauged N $$ \mathcal{N} $$ = 2 supergravity coupled to any number of vector multiplets preserve 2 c 1 K + 4 ℓ $$ 2{c}_1\left(\mathcal{K}\right)+4\ell $$ supersy
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2019, Iss 8, Pp 1-66 (2019)
Journal of High Energy Physics, Vol 2019, Iss 8, Pp 1-66 (2019)
We obtain cosmological solutions with Kasner-like asymptotics in $$ \mathcal{N} $$ N = 2 gauged and ungauged supergravity by maximal analytic continuation of planar versions of non-extremal black hole solutions. Initially, we construct static solutio
Autor:
George Papadopoulos, Jan B. Gutowski
Publikováno v:
Gutowski, J & Papadopoulos, G 2021, ' Eigenvalue estimates for multi-form modified Dirac operators ', JOURNAL OF GEOMETRY AND PHYSICS, vol. 160, 103954, pp. 1-. https://doi.org/10.1016/j.geomphys.2020.103954
We give estimates for the eigenvalues of multi-form modified Dirac operators which are constructed from a standard Dirac operator with the addition of a Clifford algebra element associated to a multi-degree form. In particular such estimates are pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7123528863d9d3ffe759028a42a9ef71
http://arxiv.org/abs/1911.02281
http://arxiv.org/abs/1911.02281
Autor:
Jan B. Gutowski, Wafic Sabra
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2019, Iss 11, Pp 1-25 (2019)
Journal of High Energy Physics, Vol 2019, Iss 11, Pp 1-25 (2019)
Spinorial geometry methods are used to classify solutions admitting Majorana Killing spinors of the minimal 4-dimensional supergravity in neutral signature, with vanishing cosmological constant and a single Maxwell field strength. Two classes of solu
We review the remarkable progress that has been made the last 15 years towards the classification of supersymmetric solutions with emphasis on the description of the bilinears and spinorial geometry methods. We describe in detail the geometry of back
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e118c3874ce6962fef941cf9efabf8b
https://surrey.eprints-hosting.org/850566/
https://surrey.eprints-hosting.org/850566/
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 12, Pp 1-43 (2018)
Journal of High Energy Physics
Journal of High Energy Physics
We present all the symmetry superalgebras $\mathfrak{g}$ of all warped AdS$_k\times_w M^{d-k}$, $k>2$, flux backgrounds in $d=10, 11$ dimensions preserving any number of supersymmetries. First we give the conditions for $\mathfrak{g}$ to decompose in
Publikováno v:
Physics Letters
Physics Letters B, Vol 780, Iss, Pp 166-168 (2018)
Physics Letters B, Vol 780, Iss, Pp 166-168 (2018)
We construct a new class of solutions to the dispersionless hyper--CR equation, and show how any solution to this equation gives rise to a supersymmetric Einstein--Maxwell cosmological space--time in $(3+1)$--dimensions.
5 pages
5 pages