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Events Archive 2022
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Computing DIS coefficient functions at 4loop
I'll will discuss our recent progress in computing the nonsinglet nf^2 contribution to the DIS coefficient functions at 4loop. 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 GlauberSudarshan state—Keshav 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 Theory—Heliudson BERNARDO
I will describe a proposal for a unified dark sector model in string theory with the following features: The modelindependent axion descending from the KalbRamond 2form field is identified with the darkmatter 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 Meeting—Giovanni 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 HeriotWatt University, he ...
Higgs Centre Seminar Room, JCMB
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Toward datadriven reducedorder modeling and control of flows with complex chaotic dynamics—Michael 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 NavierStokes 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 Copy—William EMOND
From Weyl to Cotton: The 3D Double Copy
Recent developments in scattering amplitudes have enabled the construction of classical physics in terms of onshell 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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Onshell Amplitudes for Supersymmetric Massive Gravity—Laura JOHNSON
Onshell 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
spin2 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 nonperturbative double copy based on 2107.01114 . 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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Colorkinematics duality and doublecopy for form factors—Guanda LIN
Colorkinematics duality and doublecopy for form factors
Gravity amplitudes are closely linked to gauge theory amplitudes via the double copy as "gravity=gauge^2", in which the colorkinematics (CK) duality for gauge theory amplitudes plays a a crucial role. Given the huge success of studying the CK duality and doublecopy ...
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 CrossDisciplinary Fellow ...
Online
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Scattering amplitudes and inspiraling black holes—Mao 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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The oneloop central emission vertex for two gluons in N=4 super YangMills theory—Emmet BYRNE
The oneloop central emission vertex for two gluons in N=4 super YangMills theory
In this talk I will summarise our recent investigation of the 2to4 gluon amplitude in a central NexttoMultiRegge limit, where the two central (in rapidity) gluons are not necessarily strongly ordered in rapidity. I will review ...
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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 mystery—Chris 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 nonperturbative, and previous attempts to double copy nonperturbative solutions of ...
JCMB Lecture Theatre B
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The Penrose tiling, selfsimilar quasicrystals, and fundamental physics—Latham BOYLE
I will begin with the Penrose tiling  the most famous example of a selfsimilar quasiperiodic 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 oneloop calculations. After a postdoc at DESY, Zeuthen, Gavin took up a position ...
Online
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A new picture of the cosmos: a twosheeted, CPTsymmetric universe—Latham BOYLE
After reviewing some key hints and puzzles from the early universe, I will introduce recent work with Neil Turok suggesting a rigid and predictive new approach to addressing them.
Our universe seems to be dominated by radiation at early times, and positive vacuum energy at late times. Taking the symmetry ...
Higgs Centre Seminar Room, JCMB
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The Cotton Double Copy—Nathan MOYNIHAN
The Cotton Double Copy
I will discuss some aspects of the Cotton double copy, the threedimensional cousin of the Weyl double copy.
Zoom
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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 sky—Suddhasattwa BRAHMA
The BFSS matrix model is a proposed nonperturbative definition of Mtheory in which space is emergent. In this talk, I shall present a new paradigm of earlyuniverse cosmology in the context of the BFSS theory. Specifically, I will show that matrix theory leads to an emergent, nonsingular cosmology which, at ...
Higgs Centre Seminar Room, JCMB
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