Research lectures, seminars and events
The events listed in this area are research seminars, workshops and lectures hosted by Durham University departments and research institutes. If you are not a member of the University, but wish to enquire about attending one of the events please contact the organiser or host department.
|October 2020||December 2020|
Events for 2 November 2020
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Narayanaswamy Balakrishnan (Bala): Accelerated Life Testing of One-Shot Devices: Data Collection and Analysis
In this talk, I will introduce the problem of evaluation of reliability of one-shot devices. After providing some practical data sets on different types of tests involving one-shot devices, I will describe various estimation methods under classical setup and also in the framework of accelerated life-testing conditions. I shall also elaborate on model validation and model selection methods. Finally, I shall discuss the problem of optimal design under testing budget constraints. Throughout, I shall use different data sets to illustrate the methods developed.
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In flat space, four-point amplitudes of closed strings in type IIB string theory are described by the Virasoro-Shapiro amplitude. It is of great interest to generalise this to curved backgrounds and in this talk we focus on string theory in AdS5xS5, which is dual to N=4 SYM. We introduce a simple 10d scalar effective field theory describing the stringy corrections to supergravity in AdS5xS5 from which we can systematically derive all four-point 1/2-BPS correlators described by tree-level string theory. To do this we introduce a new 10d formulation of Witten diagrams and the Mellin transform which treats AdS and S on equal footing.