One of the hottest topics in modern physics is trying to understand the scattering of fundamental particles with neither shape nor size - one step up from nothingness. Amazingly, attempts to understand these simple processes theoretically require state-of-the-art mathematics. Theorist Ruth Britto, at Trinity College Dublin, is one of the leaders of this branch of physics. In this edition, she describes how she became interested in this subject and why she finds it so fascinating.This is one of a series of interviews given by world-class experts to Graham on the themes he explores in his new book The Universe Speaks in Numbers.  Hosted on Acast. See acast.com/privacy for more information.

Graham’s guest in this edition is the membrane pioneer Michael Duff. Soon after the Second String Theory Revolution, which began in 1995, membranes became widely acknowledged to be a crucial part of our understanding of the inner workings of Nature.This is one of a number of interviews given by world-class experts to Graham on the themes he explores in his new book The Universe Speaks in Numbers.  Hosted on Acast. See acast.com/privacy for more information.

‘The most perfect microscopic structures in the known universe’ – that is the exquisite description of sub-nuclear scattering amplitudes given by theorist Lance Dixon, based at the Stanford Linear Accelerator in California. Having made his name as a string theorist in the 1980s, Dixon became one of the leading pioneers in the field of scattering-amplitudes, developing a host of ingenious ideas and techniques. In this thoughtful interview, he describes why he switched his research focus, the fascination and importance of the amplitudes, and the prospects for the subject’s future.This is one of a number of interviews given by world-class experts to Graham on the themes he explores in his new book The Universe Speaks in Numbers.  Hosted on Acast. See acast.com/privacy for more information.

The Dutchman Robbert Dijkgraaf is a rarity – not only is he a top-class mathematical physicist, he is also one of the world’s finest science communicators. In this bracing interview with Graham, Dijkgraaf lucidly describes the state of modern fundamental physics and the continually surprising – and extraordinarily productive – symbiosis between this science and modern mathematics. As Graham says: ‘Robbert gives us a real tour de force.’This is one of a number of interviews given by world-class experts to Graham on the themes he explores in his new book The Universe Speaks in Numbers.  Hosted on Acast. See acast.com/privacy for more information.

Science writer Graham Farmelo in conversation with Greg Moore. Physics and mathematics seem to be in ‘pre-established harmony’, a phrase that has long been popular with physicists and mathematicians working at the subjects’ interface. Greg Moore, based at Rutgers University, has discovered many surprising new relationships between quantum field theories and the string framework and concepts in contemporary mathematics. In this interview, he eloquently describes examples of this and explains why he is promoting the notion of ‘physical mathematics’, a discipline that he believes is now well established, with a bright future.This is one of a number of interviews given by world-class experts to Graham on the themes he explores in his new book The Universe Speaks in Numbers.  Hosted on Acast. See acast.com/privacy for more information.

Science writer Graham Farmelo in conversation with Freeman Dyson. Freeman Dyson talks about his being both a theoretical physicist and a mathematician, the troubled relationship between mathematics and physics in his youth, the impressive physicist he knew (no, it’s not Feynman) and string theory. This interview was recorded last summer at the IAS, Princeton, in Freeman’s office – and he’s as lively, counter-orthodox and fearless as ever.This is one of a number of interviews given by world-class experts to Graham on the themes he explores in his new book The Universe Speaks in Numbers.  Hosted on Acast. See acast.com/privacy for more information.

What do philosophers of physics do, and what light might they shed on the work of today’s physicists and astronomers? Michela Massimi, a distinguished philosopher of science at the University of Edinburgh, discusses these and other matters with Graham in this lively interview, recorded in Michela’s office. She has a bracingly optimistic vision for her subject in the coming decades, as Graham heard.This is one of a number of interviews given by world-class experts to Graham on the themes he explores in his new book The Universe Speaks in Numbers.  Hosted on Acast. See acast.com/privacy for more information.

Science writer Graham Farmelo in conversation with Juan Maldacena. Juan Maldacena has been described as the first great theoretician of the twenty-first century. In a series of brilliantly imaginative insights, he has enriched our understanding of gravity, space-time and black holes. During this relaxed and informative interview with Graham, recorded last summer in Princeton, Maldacena describes how he became interested in modern physics, his astonishing discovery of an equivalence between a string theory and a quantum field theory. He also gives his views about the current state of our understanding of the universe and prospects for the future of theoretical physics.Read more in Graham Farmelo's book The Universe Speaks in Numbers. Hosted on Acast. See acast.com/privacy for more information.

Science writer Graham Farmelo in conversation with Sir Roger Penrose. Sir Roger Penrose, a hybrid mathematician-cosmologist, is one of the most accomplished scientific thinkers of the past fifty years. In this compelling interview with Graham, Penrose describes some of the key events of his remarkable career.Read more in Graham Farmelo's book The Universe Speaks in Numbers. Hosted on Acast. See acast.com/privacy for more information.

Science writer Graham Farmelo in conversation with Michael Green. Michael Green is one of the pioneers of the string framework. In collaboration with the Caltech theorist John Schwarz, he made a crucial breakthrough that led in 1984 to the what became known as the First String Revolution.Read more in Graham Farmelo's book The Universe Speaks in Numbers. Hosted on Acast. See acast.com/privacy for more information.