This week

Wednesday

3d mirror symmetry with four supercharges

Regular Seminar Sergio Benvenuti (INFN, Trieste)

at:
14:00 KCL
room S0.12
abstract:

3d mirror symmetry for theories with eight supercharges is understood in terms of Hanany-Witten brane setups and plays an important role in many areas of supersymmetric qft’s. The generalization to theories with four supercharges, in the non-Abelian case, has been a long standing open problem. In this talk, based on work with Riccardo Comi and Sara Pasquetti, we focus on brane setups with NS and D5’ branes, proposing that the related quiver gauge theories involve ‘improved bifundamentals’, that is strongly coupled SCFT's which are ancestors of the well known T[SU(N)] theories. Our proposal leads to 3d mirror dualities that can be exactly proven, reducing them to known Seiberg-like dualities. This gives strong support to the proposal. The simplest example is the duality between adjoint SQCD with F flavors, and a quiver with F-1 nodes and F-2 improved bifundamentals.

Thursday

Lonti: Geodesics and Singularity Theorems in General Relativity (1/4)

Regular Seminar Sunil Mukhi (ICTS)

at:
10:30 Other
room LIMS
abstract:

These lectures will summarise mathematical aspects of classical General Relativity that are helpful in understanding current developments in the field. Lecture I will focus on Lorentzian-signature geometry, with an emphasis on causal structure. Some topological notions will also be introduced. In Lecture II we will go on to study the behaviour of geodesics in General Relativity and derive the famous Raychaudhuri equation. The null version of this equation, due to Sachs, will also be derived. Lecture III will focus on the "Hawking singularity theorem", namely that cosmological spacetimes with positive local Hubble constant are geodesically incomplete in the past under suitable conditions. In Lecture IV we will discuss the "Penrose singularity theorem" for black holes.

Lonti: Geodesics and Singularity Theorems in General Relativity (2/4)

Regular Seminar Sunil Mukhi (ICTS)

at:
13:30 Other
room LIMS
abstract:

These lectures will summarise mathematical aspects of classical General Relativity that are helpful in understanding current developments in the field. Lecture I will focus on Lorentzian-signature geometry, with an emphasis on causal structure. Some topological notions will also be introduced. In Lecture II we will go on to study the behaviour of geodesics in General Relativity and derive the famous Raychaudhuri equation. The null version of this equation, due to Sachs, will also be derived. Lecture III will focus on the "Hawking singularity theorem", namely that cosmological spacetimes with positive local Hubble constant are geodesically incomplete in the past under suitable conditions. In Lecture IV we will discuss the "Penrose singularity theorem" for black holes.

Gravitational Wave Initiative

Conference Inaugural meeting (Queen Mary University)

at:
10:00 QMUL
room Social Hub SMS
abstract:

https://sites.google.com/view/gwiinauguralmeeting/home

Friday

TBA

Regular Seminar Zahra Zahraee (CERN)

at:
14:00 QMUL
room G. O. Jones 610 and Zoom
abstract:

TBA