This week

Tuesday

TBA

Regular Seminar Radu Tatar (Liverpool)

at:
15:00 City U.
room C305
abstract:

Wednesday

Gauge theories phases of 5d SCFTs: an M-theory/type IIA perpective

Regular Seminar Cyril Closset ()

at:
14:00 IC
room H503
abstract:

I will revisit the well-known construction of 5d SCFTs from M-theory on a CY3 singularity. Upon massive deformation, such 5d SCFTs are often expected to have 5d N=1 supersymmetric gauge theory descriptions at low energy. I will present a new way to study these 5d ``gauge theory phases'' systematically using type-IIA string theory, and I will comment on the phenomenon of "UV duality." Along the way, I will discuss some slightly subtle properties of the 5d N=1 Coulomb branch prepotential.

String theory compactifications with sources

Regular Seminar Alessandro Tomasiello (Universita di Milano-Bicocca)

at:
13:15 KCL
room S2.49
abstract:

In recent years, more and more compactifications have emerged whose existence depends crucially on the presence of internal sources to the supergravity fields, such as D-branes and orientifold planes. I will review some solutions of this type in various dimensions, and illustrate their applications to holography and potentially to the problem of finding de Sitter solutions.

Thursday

How logarithms are born

Regular Seminar Melissa van Beekveld (IMAPP Njimegen)

at:
14:00 QMW
room G O Jones 610
abstract:

I will show how large logarithms arise in a perturbative calculation and how resummation solves the issue of having these large logarithms. If there is some time left, I want to show some recent progress that we have made on pinning down the origin of the next-to-leading class of logarithms.