Theoretical Physics - From Outer Space to Plasma-logo

Theoretical Physics - From Outer Space to Plasma

Education Podcasts

Members of the Rudolf Peierls Centre for Theoretical Physics host a morning of Theoretical Physics roughly three times a year on a Saturday morning. The mornings consist of three talks pitched to explain an area of our research to an audience familiar with physics at about the second-year undergraduate level and are open to all Oxford Alumni. Topics include Quantum Mechanics, Black Holes, Dark Matter, Plasma, Particle Accelerators and The Large Hadron Collider.

Members of the Rudolf Peierls Centre for Theoretical Physics host a morning of Theoretical Physics roughly three times a year on a Saturday morning. The mornings consist of three talks pitched to explain an area of our research to an audience familiar with physics at about the second-year undergraduate level and are open to all Oxford Alumni. Topics include Quantum Mechanics, Black Holes, Dark Matter, Plasma, Particle Accelerators and The Large Hadron Collider.

Location:

United States

Description:

Members of the Rudolf Peierls Centre for Theoretical Physics host a morning of Theoretical Physics roughly three times a year on a Saturday morning. The mornings consist of three talks pitched to explain an area of our research to an audience familiar with physics at about the second-year undergraduate level and are open to all Oxford Alumni. Topics include Quantum Mechanics, Black Holes, Dark Matter, Plasma, Particle Accelerators and The Large Hadron Collider.

Language:

English


Episodes

Strings and Fields

1/16/2021
Will strings be the theory of everything?, presented by Prof Luis Fernando Alday.

Duration:00:32:07

Classical and Quantum Black Holes

1/16/2021
Prof March-Russell explains our latest understanding of black holes, some of the most mysterious objects in the Universe.

Duration:00:36:15

Why is Quantum Gravity so hard?

1/16/2021
A pressing question in our quest to understand the Universe is how to unify quantum mechanics and gravity, the very small and the very large.

Duration:00:33:05

Machine learning techniques in modern quantum-mechanics experiments

3/22/2020
In this talk, Dr Elliott Bentine shall discuss how recent experiments have exploited machine-learning techniques, both to optimize the operation of these devices and to interperet the data they produce. Modern table-top experiments can engineer physical systems that are deeply into the quantum mechanical regime. These cutting-edge instruments provide new insights into fundamental physics, and a pathway to future devices that will harness the power of quantum mechanics. They typically require...

Duration:00:37:14

Machine Learning and String Theory

3/22/2020
Professor Andre Lukas will discuss how string theorists have started to use methods from data science - particularly machine learning - to analyse the vast landscape of string data.

Duration:00:52:23

An Introduction to deep learning

3/22/2020
Professor Ard Louis gives a basic introduction to deep learning for physicists and addresses a few questions such as: Is the hype around deep learning justified, or are we about to hit some fundamental limitations? In less than ten years, machine learning techniques based on deep neural networks have moved from relative obscurity to central stage in the AI industry. Large firms such as Google and Facebook are pouring billions into research and development of these new technologies. The use...

Duration:00:52:45

Welcome by Ian Shipsey Head of the Department of Physics

3/22/2020
Ian Shipsey give an update on the department and introduces the next three talk on 'AI in Physics'.

Duration:00:06:01

Cosmic acceleration revealed by Type la supernovae?

11/1/2019
In this talk Subir Sarkar will explain how deflagration supernovae have been used to infer that the Hubble expansion rate is accelerating, and critically assess whether the acceleration is real and due to `dark energy’.

Duration:00:40:58

Supernova Explosions and their Role in the Universe

11/1/2019
In this talk, Philipp Podsiadlowski will explain how this energy (sometimes) creates a visible fireball, before going on to explain the role of supernovae in the production of the heaviest elements in the periodic table.

Duration:00:48:49

What makes stars go bang?

11/1/2019
In this talk, James Binney will outline the physics that leads to prodigeous release of energy in core-collapse and deflagration supernovae.

Duration:00:46:51

... from collisions to the Higgs boson

5/16/2019
To study the Higgs boson at the LHC we also need to understand how highly energetic quarks and gluons interact, among themselves and with the Higgs. These interactions are described by quantum field theory, a beautiful mathematical framework that combines quantum mechanics with Einstein’s theory of special relativity. In recent years, our understanding of quantum field theory has progressed significantly, allowing us to develop a new generation of accurate theoretical predictions for key LHC...

Duration:00:35:01

From protons to collisions…

5/16/2019
We learn about the Higgs Boson and its interactions at the LHC by examining the debris produced by colliding protons head-on at unprecedented high energies. However, we know from our theory of strong interactions - quantum chromodynamics (QCD) - that protons themselves are highly complex bound states of more fundamental 'quarks', held together by the force carriers of QCD, the 'gluons'. The question is then: how do we go from the collision of these complicated protons to a theoretical...

Duration:00:36:13

What the Large Hadron Collider is telling us about the Higgs sector and its new interactions

5/16/2019
Over the past two years, CERN’s Large Hadron Collider (LHC) has started to directly probe a qualitatively new class of interactions, associated with the Higgs boson. These interactions, called Yukawa interactions, are unlike any other interaction that we have probed at the quantum level before. In particular, unlike the electromagnetic, weak and strong forces, they have an interaction strength that does not come in multiples of some underlying unit charge. Yukawa interactions are believed to...

Duration:00:44:51

Why the world is simple - Prof Ard Louis

2/15/2019
The coding theorem from algorithmic information theory (AIT) - which should be much more widely taught in Physics! - suggests that many processes in nature may be highly biased towards simple outputs. Here simple means highly compressible, or more formally, outputs with relatively lower Kolmogorov complexity. I will explore applications to biological evolution, where the coding theorem implies an exponential bias towards outcomes with higher symmetry, and to deep learning neural networks,...

Duration:00:38:47

Topology in Biology - Prof Julia Yeomans FRS

2/15/2019
Active systems, from cells and bacteria to flocks of birds, harvest chemical energy which they use to move and to control the complex processes needed for life. A goal of biophysicists is to construct new physical theories to understand these living systems, which operate far from equilibrium. Topological defects are key to the behaviour of certain dense active systems and, surprisingly, there is increasing evidence that they may play a role in the biological functioning of bacterial and...

Duration:00:38:38

Welcome from the Head of the Physics Department

2/15/2019
Ian Shipsey delivers the welcome speech for the Saturday Mornings of Theoretical Physics.

Duration:00:13:41

Entropy from Entanglement

12/3/2018
Siddharth Parameswaran, Associate Professor, Physics Department. The usual picture of entropy in statistical mechanics is that it quantifies our degree of ignorance about a system. Recent advances in cooling and trapping atoms allow the preparation of quantum systems with many interacting particles isolated from any external environment. Textbook discussions of entropy — that invoke the presence of a “large” environment that brings the system to thermal equilibrium at a fixed temperature ---...

Duration:00:42:12

Entropy: two short stories

12/3/2018
John Chalker, Head of Theoretical Physics, gives a talk on entropy. Thermodynamics and statistical mechanics give us two alternative ways of thinking about entropy: in terms of heat flow, or in terms of the number of micro-states available to a system. John Chalker will describe a physical setting to illustrate each of these. By applying thermodynamics in a realm far beyond its origins, we can use the notion of an ideal heat engine to find the temperature of a black hole. And by applying...

Duration:00:39:53

Entropy: Gaining Knowledge by Admitting Ignorance

12/3/2018
Alexander Schekochihin, Professor of Theoretical Physics, gives a talk on entropy. When dealing with physical systems that contain many degrees of freedom, a researcher's most consequential realisation is of the enormous amount of detailed information about them that she does not have, and has no hope of obtaining. It turns out that this vast ignorance is not a curse but a blessing: by admitting ignorance and constructing a systematic way of making fair predictions about the system that rely...

Duration:00:52:31

Networked Quantum Information Technologies

7/6/2018
This talk reviews the developments in quantum information processing.

Duration:00:21:09