I will discuss field configurations of Abelian gauge fields that carry non-zero second Chern number, generated by closed monopole worldlines in four-dimensional Euclidean space. These "Abelian instantons" render the electromagnetic vacuum angle physical. In the presence of gravity, magnetic monopoles that are Reissner-Nordstrom black holes naturally realize these field configurations. Including these instantons in the gravitational path integral makes the electromagnetic theta-term a physical parameter of the Standard Model coupled to gravity,
| Building: | West Hall |
|---|---|
| Event Type: | Lecture / Discussion |
| Tags: | High Energy Theory Seminar, Physics, Science, Seminar, Talk |
| Source: | Happening @ Michigan from Leinweber Institute for Theoretical Physics, Department of Physics, HET Seminars, Leinweber Institute for Theoretical Physics Seminars, Leinweber Institute for Theoretical Physics High Energy Theory Seminars |
Events
Featured
Apr
18
Saturday Morning Physics | The Science of Physicist Jens Zorn's Art
Multiple U-M Faculty Speakers
10:30 AM
170 & 182
Weiser Hall
Upcoming
Apr
16
LITP Public Lecture | What quantum physics teaches us about gravitational waves
Zvi Bern (UCLA)
4:30 PM
4th Floor Amphitheatre
Rackham Graduate School (Horace H.)
Apr
17
Cosmo-Astro Seminar | Weak Gravitational Lensing Cosmology with the Roman Space Telescope High Latitude Imaging Survey
Kaili Cao (Ohio State University)
11:00 AM
3247 Neal Lab
Randall Laboratory
Apr
17
HET Seminar | Abelian Instantons in Quantum Field Theory and Gravity
Isabel Garcia-Garcia
3:00 PM
340
West Hall
