Found 7 result(s)

25.04.2024 (Thursday)

2702' style='color:#f0ad4e'>

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

Regular Seminar Sunil au:Mukhi'><span class='hl'>Sunil</span> Mukhi (IISER, Pune)

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.

22.04.2024 (Monday)

2701' style='color:#f0ad4e'>

Lonti: Geodesics and Singularity Theorems in General Relativity (3/4)

Regular Seminar Sunil au:Mukhi'><span class='hl'>Sunil</span> Mukhi (IISER, Pune)

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.

18.04.2024 (Thursday)

2699' style='color:#f0ad4e'>

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

Regular Seminar Sunil au:Mukhi'><span class='hl'>Sunil</span> 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.

18.04.2024 (Thursday)

2700' style='color:#f0ad4e'>

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

Regular Seminar Sunil au:Mukhi'><span class='hl'>Sunil</span> 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.

30.05.2018 (Wednesday)

1770' style='color:#f0ad4e'>

Exotic Rational CFT and the Modular Bootstrap

Regular Seminar Sunil au:Mukhi '><span class='hl'>Sunil</span> Mukhi (IISER, Pune)

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

I will summarise old and recent developments on the classification and solution of Rational Conformal Field Theories in 2 dimensions using the method of Modular Differential Equations. Novel and exotic theories are found with small numbers of characters and simple fusion rules, one of these being the Baby Monster CFT. Correlation functions for many of these theories can be computed using crossing-symmetric differential equations.

16.05.2018 (Wednesday)

1769' style='color:#f0ad4e'>

Exotic Rational CFT and the Modular Bootstrap

Regular Seminar Sunil au:Mukhi'><span class='hl'>Sunil</span> Mukhi (IISER Pune)

at:
13:15 KCL
room K4.31
abstract:

I will summarise old and recent developments on the classification and solution of Rational Conformal Field Theories in 2 dimensions using the method of Modular Differential Equations. Novel and exotic theories are found with small numbers of characters and simple fusion rules, one of these being the Baby Monster CFT. Correlation functions for many of these theories can be computed using crossing-symmetric differential equations.

30.01.2008 (Wednesday)

567' style='color:#f0ad4e'>

Dyon Death Eaters

Triangular Seminar Sunil au:Mukhi'><span class='hl'>Sunil</span> Mukhi (Tata Institute)

at:
16:00 KCL
room K1.28
abstract:

I will describe and analyse general two-body decays of primitive and non-primitive 1/4-BPS dyons in four-dimensional type IIB string compactifications. For half-BPS decays, a relation is found between walls of marginal stability and the mathematics of Farey sequences and Ford circles. The relationship of marginal decay to the breakup of multi-centred dyons will also be discussed.