The main page content begins here.

Events Archive 2021

This event is a Event.

-

Quantum aspects of two-field cosmologyThomas COLAS

In single-field inflation, cosmological perturbations are placed in a two-mode squeezed state from which cosmological structures later form. The generalization to two-field cosmology naturally leads to the concept of four-mode squeezed states. In this talk, I will introduce these states, show how they can be understood as two two-mode squeezed ...
4312

This event is a Event.

-

Strong field QED: probing fundamental physics with intense lasersAnton ILDERTON

I will give an overview of efforts to probe non-perturbative structures in QED using intense laser fields, beginning with an introduction to the Furry expansion of observables in strong backgrounds, which is the basis of most modern theory calculations in "strong field QED". I will then introduce the Ritus-Narozhny conjecture ...
Higgs Centre Seminar Room, JCMB

This event is a Event.

-

Seminar by Gang Chen

HEFT kinematic algebra, heavy double copy and classical gravitational scattering In this talk, I will introduce the kinematic algebra and a new double copy in heavy effective field theory (HEFT). I will also present the application of the novel double copy to classical gravitational scattering. Recently we proposed a new ...
Higgs Centre Seminar Room, JCMB

This event is a Event.

-

Interference, Caustics and Oscillatory IntegralsJob FELDBRUGGE

Interference is one of the most universal phenomena in nature. In classical physics, the linear superposition of sound waves, surface waves, radio waves, light or gravitational waves all exhibit the same characteristic patterns of constructive and destructive interference. Interference is also fundamental to quantum physics, as exemplified by the Feynman ...
Higgs Centre Seminar Room, JCMB

This event is a Event.

-

Yang-Mills observables: from KMOC to eikonal through EFTLeonardo DE LA CRUZ

In this talk we present the integrated result of NLO conservative Yang-MIlls observables in the KMOC formalism. On the other hand, extending a recently-introduced framework based on scattering amplitudes and effective field theory (EFT) to consider colour-charged objects, we obtain a conservative Hamiltonian describing the interactions of two charged bodies ...
Higgs Centre Seminar Room, JCMB

This event is a Event.

-

Cosmology with radio and optical surveysAlkistis POURTSIDOU

I will describe how radio telescope arrays like MeerKAT and the Square Kilometre Array can kick off an exciting new era in cosmology using the innovative neutral hydrogen intensity mapping technique. I will also talk about the forthcoming Euclid satellite mission, concentrating on the theoretical modelling challenges we need to ...
The Higgs Centre for Theoretical Physics

This event is a Event.

-

Big vs Small: What Is the Mass of the First Stars?Volker BROMMAnna FREBELStefania SALVADORI

Light from stars is one of the main tools that aids in the exploration of the Universe through cosmic time. To do so a good understanding of the properties of stars in particular their masses and luminosities is required. Detailed measurements of individual stars close to us suggest that the ...

This event is a Event.

-

Detection of New Physics From the Muon g-2 Experiment: Much Ado About Nothing?Christoph LEHNERLaurent LELLOUCH

Answering questions such as "What is dark matter?" or "What happened directly after the Big Bang?" requires finding new physics, like not yet known particles or forces. Via quantum effects such new physics will contribute tiny amounts to properties of known particles and could be discovered by observing small deviations ...