Friday, November 09, 2018

11:00 AM -
12:00 PM

Lauritsen 469

# High Energy Theory Seminar

't Hooft Defects, Monopole Bubbling, and SQM Localization

T. Daniel Brennan

*,*Rutgers University*,*'t Hooft defect are a good probe of non-perturbative phenomena in quantum field theories. In 4D N=2 supersymmetric gauge theories, we can exactly compute their expectation value using tools such as localization, spectral networks, and AGT techniques. From this we can learn about phenomena such as wall crossing of framed BPS states and monopole bubbling. However, the expectation value of 't Hooft defects computed using localization does not always match the result computed by other techniques. In this talk we will examine this flaw and discuss its physical interpretation and resolution.

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For more information, please contact Carol Silberstein by phone at 6685 or by email at carol@theory.caltech.edu or visit http://www.theory.caltech.edu/people/seminar/schedule.html