Axion mass and the topology of high-temperature QCD
Axion is a promising candidate for the cold dark matter, which is originated from the Peccei-Quinn mechanism for resolving the strong CP problem in QCD.
To determine the evolution of the axion mass and its density from the early universe (at a very high temperature) to the present one at ~2.7 degree Kelvin, it requires the input of the QCD topological susceptibility for all temperatures.
For the crucial intermediate temperatures (150 MeV < T < 600 MeV), topological susceptibility can only be reliably determined non-perturbatively with lattice QCD.
In this talk, I present preliminary results of the first determination of topological susceptibility in lattice QCD with physical (u,d,s,c) domain-wall quarks, for the temperatures in the range, 0 < T < 550 MeV.
[Lunchbox Registration]
If you will attend the seminar and would like to have a lunchbox on that day, please fill out the online registration form below by 10:00AM Dec. 16th (Wednesday morning). Late registration will not be accepted.
*Note:
1. The lunchboxes will only be prepared for the participation of professors and postdoctoral researchers.
2. In order to prevent the potential spread of COVID-19, we suggest that you bring your own face mask and wear it while attending the seminar.
3. You may check this web page again later after you have completed the online registration. The data for the list of registered attendees will be updated every 5 minutes and shown at the bottom of the page.
[List of Attendees Registered for the Lunchboxes]
[Lunchbox Registration]
If you will attend the seminar and would like to have a lunchbox on that day, please fill out the online registration form below by 10:00AM Dec. 16th (Wednesday morning). Late registration will not be accepted.
*Note:
1. The lunchboxes will only be prepared for the participation of professors and postdoctoral researchers.
2. In order to prevent the potential spread of COVID-19, we suggest that you bring your own face mask and wear it while attending the seminar.
3. You may check this web page again later after you have completed the online registration. The data for the list of registered attendees will be updated every 5 minutes and shown at the bottom of the page.
[List of Attendees Registered for the Lunchboxes]
