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Events Archive 2022

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Computing DIS coefficient functions at 4-loop

I'll will discuss our recent progress in computing the non-singlet nf^2 contribution to the DIS coefficient functions at 4-loop. The computation is performed in Mellin space by employing a system of differential equations to generate a finite expansion in Mellin moments. The computation of the Mellin moments via ...
The Higgs Centre Seminar Room, JCMB

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de Sitter space as a Glauber-Sudarshan stateKeshav DASGUPTA

In this talk I will first discuss why it is impossible to get a de Sitter space in the absence of quantum corrections and temporal dependence of degrees of freedom. I will then point out why it is not feasible to realize de Sitter space as a vacuum solution in ...
Higgs Centre Seminar Room, JCMB

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Towards a Dark Sector Model from String TheoryHeliudson BERNARDO

I will describe a proposal for a unified dark sector model in string theory with the following features: The model-independent axion descending from the Kalb-Ramond 2-form field is identified with the dark-matter field, and the real part of a Kahler modulus field associated to the radius of one of the ...
Higgs Centre Seminar Room, JCMB

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Higgs Boson Birthday

Did you know that the 4th July is the 10th anniversary of the discovery of the Higgs boson? Peter Higgs is an Edinburgh local and conducted his research at the University of Edinburgh. We are therefore putting on a very special 10th anniversary party. Come and celebrate with us, at ...
National Museum of Scotland, Chambers Street, Edinburgh

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Higgs Centre Alumni MeetingGiovanni ARMANDOArjun BERERALuigi DEL DEBBIOEinan GARDIAlkistis POURTSIDOUNeil TUROK

As part of the Higgs Centre’s Decennial celebrations, we are holding an alumni meeting on 25 June 2022. We will also provide an online experience. This event is part of the Higgs Centre Decennial so the agenda will focus on that, but we are happy to welcome graduates and ...
Playfair Library, University of Edinburgh

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Seminar by Andrew McLeod: A New Amplitude/Form Factor Duality

Traditional methods for computing quantities such as scattering amplitudes and form factors in quantum field theory become intractable at high perturbative orders. However, a great deal is now known about the mathematical properties of these quantities, especially in supersymmetric gauge theories. In this talk, I will describe how this knowledge ...

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Career Talk with Niclas Westerberg

Nic’s connection to the Higgs Centre is through an MSc in Theoretical Physics that he completed in 2015, after which he continued to do a PhD with the Scottish Centre for Doctoral Training in Condensed Matter Physics. Under the supervision of Patrik Öhberg, and based at Heriot-Watt University, he ...
Higgs Centre Seminar Room, JCMB

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Toward data-driven reduced-order modeling and control of flows with complex chaotic dynamicsMichael D. GRAHAM

Many fluid flows are characterized by chaotic dynamics, a large number of degrees of freedom, and multiscale structure in space and time. We build on the idea that many dynamical systems that are nominally described by a state variable of very high or infinite dimension -- such as the Navier-Stokes equations ...
Higgs Centre Seminar Room, JCMB

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Gravitational Regge bounds

Gravitational Regge bounds I will review the basic assumptions and spell out the arguments that lead to the bound on the Regge growth of gravitational scattering amplitudes. I will discuss the Regge bounds both at fixed transfer momentum and smeared over it. Our basic conclusion is that gravitational scattering amplitudes ...

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Career Talk with Brian Coyle

Brian moved to Edinburgh from Ireland in 2016 for the MSc programme offered by the Higgs centre in Theoretical Physics. Afterwards, he remained in Edinburgh (but moved to the Informatics forum) for a joint MRes/PhD programme in the CDT for Pervasive Parallelism, supervised by Prof. Elham Kashefi. Here, he ...

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From Weyl to Cotton: The 3D Double CopyWilliam EMOND

From Weyl to Cotton: The 3D Double Copy Recent developments in scattering amplitudes have enabled the construction of classical physics in terms of on-shell scattering amplitudes. Among the powerful tools that can be mapped over is the double copy relation between gauge theory and gravity. This has yielded a number ...
Zoom

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On-shell Amplitudes for Supersymmetric Massive GravityLaura JOHNSON

On-shell Amplitudes for Supersymmetric Massive Gravity Abstract: Enhancing the symmetry of physical theories to include supersymmetry has a history of leading to important insights, and so we are investigating whether supersymmetry has interesting things to teach us about massive gravity. In this talk, we start by introducing massive spin-2 theories ...
Zoom

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Career Talk with Chiara Decaroli

Chiara Decaroli is originally from a small village in Italy. She fell in love with quantum mechanics during her high school years after reading a book on quantum entanglement which she did not understand. Wanting to dig deeper, she came to the University of Edinburgh for her Bachelors in Physics ...

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The holonomy group and the double copy

The holonomy group and the double copy I will talk about global aspects of the classical non-perturbative double copy based on 2​107.01114 . More specifically, I will review the concept of Holonomy of Riemannian manifolds which allows us to classify manifolds based on their holonomy groups. I will show ...
Zoom

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Color-kinematics duality and double-copy for form factorsGuanda LIN

Color-kinematics duality and double-copy for form factors Gravity amplitudes are closely linked to gauge theory amplitudes via the double copy as "gravity=gauge^2", in which the color-kinematics (CK) duality for gauge theory amplitudes plays a a crucial role. Given the huge success of studying the CK duality and double-copy ...
Zoom

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Career Talk with Ava Khamseh

Ava Khamseh graduated with a PhD in Theoretical Particle Physics, under the supervision of Luigi Del Debbio at the Higgs Centre, in 2017 (after also having been an undergraduate degree in Physics at Edinburgh). After a year of postdoc in Prof Chris Ponting’s lab, she became a Cross-Disciplinary Fellow ...
Online

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Scattering amplitudes and inspiraling black holesMao ZENG

This will be a hybrid event with Mao presenting from the Higgs Centre. Future gravitational wave detectors require highly precise predictions for the waveforms from inspiraling black holes and neutron stars. We present advances in binary inspiral dynamics by taking classical limits of scattering amplitudes in perturbative quantum gravity. The ...
Higgs Centre Seminar Room, JCMB

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Career Talk with Lettie Roach

Lettie Roach graduated from the Mathematical Physics MPhys programme at the University of Edinburgh in 2015 and went on to do a PhD at Victoria University of Wellington and a postdoc at the University of Washington in climate physics. She is currently an Associate Research Scientist at NASA GISS in ...
Online

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The case of the missing solutions: a biadjoint mysteryChris WHITE

A correspondence called the double copy relates quantities in gauge and gravity theories, as well as a novel scalar theory with two types of colour charge (“biadjoint scalar theory”). It is not yet known whether the double copy is fully non-perturbative, and previous attempts to double copy nonperturbative solutions of ...
JCMB Lecture Theatre B

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The Penrose tiling, self-similar quasicrystals, and fundamental physicsLatham BOYLE

I will begin with the Penrose tiling -- the most famous example of a self-similar quasi-periodic pattern. In addition to its beauty and mathematical interest, this pattern has a classic physical application to exotic materials called quasicrystals. But, in this talk, I will explain two new physical contexts in which such ...
Higgs Centre Seminar Room, JCMB

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Career Talk with Gavin Cullen

Gavin studied an MPhys Mathematical Physics at Edinburgh and continued to complete a PhD in Particle Theory under the supervision of Thomas Binoth and Gudrun Heinrich looking at (what was at the time) state of the art one-loop calculations. After a postdoc at DESY, Zeuthen, Gavin took up a position ...
Online

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Career Talk with Jack Medley

Jack was a PhD student and worked at the Higgs Centre for Theoretical Physics with Jenni Smillie, focussing on Z/gamma* emissions in the presence of multiple high energy QCD jets. In 2016, he finished his PhD and went to work at Gambit Research working on building models to trade ...
Online

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From abstract matrix models to observations in the skySuddhasattwa BRAHMA

The BFSS matrix model is a proposed non-perturbative definition of M-theory in which space is emergent. In this talk, I shall present a new paradigm of early-universe cosmology in the context of the BFSS theory. Specifically, I will show that matrix theory leads to an emergent, non-singular cosmology which, at ...
Higgs Centre Seminar Room, JCMB