IGAP Geometry and Physics Seminar 13/04

[Christian]

Dear all,

This is a reminder for today's seminar.

Please find all of the info below.

See you there,

Christian

On 4/8/21 3:51 PM, Christian wrote:
>
>>
>> Dear everyone,
>>
>> Next *Tuesday April 13th at 11:00 (notice earlier time)* we will have 
>> the fourth talk of the Geometry and Physics Webinar series:
>>
>> Speaker: Yasunori Lee (Tokyo U., IPMU)
>
>> Title: Some comments on 6d global gauge anomalies
>>
>> Abstract: Given a G gauge theory, there can be global 
>> (non-perturbative) gauge transformations under which the partition 
>> function is not invariant. In 6d, relevant cases include G = SU(2), 
>> SU(3), and G2, and the old computations utilizing homotopy groups 
>> affirmed that the anomalous phases can indeed arise in all three 
>> cases. On the other hand, from the modern point of view utilizing 
>> bordism groups, there should not be such global gauge anomalies in 
>> the first place. In this talk, I will describe how this 
>> apparent conflict is resolved by carefully examining the cancellation 
>> of perturbative gauge anomalies via 6d Green-Schwarz mechanism.
>
>> The meeting will be on Zoom at the following coordinates:
>>
>> https://sissa-it.zoom.us/j/84054732508?pwd=eEE2b2h2cTU5Z2dpV0lqZUQwN3pTZz09 
>> <https://sissa-it.zoom.us/j/84054732508?pwd=eEE2b2h2cTU5Z2dpV0lqZUQwN3pTZz09>
>>
>>
>>
>> or
>>
>> Meeting ID: 840 5473 2508
>>
>
>> Passcode: igapgeophy
>>
>>
>>
>> See you there,
>>
>>
>>
>> The Organizers (Francesco Benini, Giulio Bonelli, Christian Copetti, 
>> Pavel Putrov and Alessandro Tanzini)