KIAS HEP-PH Journal Club meeting

Friday 19 Sept 2025, 11:00 → 13:00 Asia/Seoul

=============== journal club meeting ===============

Time: Friday 11:00-12:00 (KST)

Place: Room 1423

 

- Talk Information

 

Talk1

 

Speaker: Dr. Heejoo Kim ( Welcome Talk)

Title: Fluctuations and Radiation in Axion string network

References: 

Abstract: 

We investigate the dynamics of global axion string networks formed after Peccei-Quinn symmetry breaking in the post-inflationary scenario. Using lattice field simulations, we confirm logarithmic scaling in the string number density and in the power-law index of the axion radiation spectrum. We also introduce the power-law index of the string fluctuation spectrum, which shows logarithmic growth and a close relation to the axion radiation spectrum. A statistical study of long-string configurations further indicates a connection between string dynamics and the scaling properties of axion emission.

 

===========lunch polling===============

Lunch menu will be a bowl of rice.

Please participate in the polling for the options below before 18:00 this Thursday.

By the rule change, lunch will be canceled if there are no external participants.

Menu and vote: https://forms.gle/t9FtryMQH5d4UxYh7

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KIAS official Youtube channel:
https://www.youtube.com/channel/UCDHm-rkJk6lEApBOkj9q-ZQ

KIAS HEP-ph Youtube channel:
https://www.youtube.com/channel/UCVXTeRaZ8oFPEN40IMvgeww

You can find KIAS HEP-ph calendar:
https://indico.kias.re.kr/category/0/calendar