Found 4 result(s)

16.10.2019 (Wednesday)

TBA

Regular Seminar Davide Cassani (INFN Padua)

at:
14:00 IC
room H503
abstract:

05.12.2012 (Wednesday)

Curved geometries for rigid supersymmetry

Regular Seminar Davide Cassani (King's College)

at:
14:00 IC
room H503
abstract:

Supersymmetry on curved spaces has recently attracted much attention, mainly as a tool towards the exact computation of quantum field theory observables via localization. Taking a holographic perspective, I will discuss how the conditions for rigid supersymmetry to be preserved on a curved boundary arise from the bulk supergravity Killing spinor equations. In particular, I will show that a four-dimensional superconformal field theory can be put on a curved, Lorentzian spacetime if and only if this admits a null conformal Killing vector. For a supersymmetric field theory with an R-symmetry, not necessarily conformal, the vector is further restricted to be Killing. After having presented some illustrative examples, I will conclude comparing with the Euclidean case.

02.11.2011 (Wednesday)

Landscape of consistent reductions with applications

Regular Seminar Davide Cassani (KCL)

at:
13:15 KCL
room S4.23
abstract:

Consistent truncations have proved to be powerful tools in the construction of new string theory solutions. Recently, they have been employed in the holographic description of condensed matter systems. In the talk, I will present a rich class of supersymmetric consistent truncations of higher-dimensional supergravity which are based on geometric structures, focusing on the tri-Sasakian case. Then I will discuss some applications, including a general result relating AdS backgrounds to solutions with non-relativistic Lifshitz symmetry.

24.11.2010 (Wednesday)

Consistent truncations of type IIB supergravity and holography

Regular Seminar Davide Cassani (Padova)

at:
12:00 IC
room H711c
abstract:

In the context of gauge-gravity duality, consistent truncations have proved to be powerful solution-generating tools, their latest application being to the holographic description of condensed matter systems. In the talk, I will discuss a rich class of consistent truncations of type IIB supergravity on squashed Sasaki-Einstein manifolds, leading to N=4 or N=2 gauged supergravity in five dimensions. As examples of the several possible applications, I will present an approach to domain wall gradient flows, as well as a new class of AdS5 backgrounds on the T(1,1) coset, with a comment on some related Lifshitz solutions.