The 2023 Shanghai Symposium on Particle Physics and Cosmology: Phase Transitions, Gravitational Waves, and Colliders (SPCS 2023)

Session

Sunday 1

24 Sept 2023, 08:30

Tsung-Dao Lee Institute/S5F-S500 - Lecture Hall (Tsung-Dao Lee Institute)

Conveners

Sunday 1

• Yaquan Fang (Institute of High Energy Physics)

7. Collider tests of nanohertz gravitational waves from minimal dark phase transition

Shaoping Li

24/09/2023, 08:30

Recently, compelling evidence of nanohertz gravitational waves is indicated by the pulsar timing array collaborations. In this talk, I will present an MeV-scale first-order phase transition from a minimal dark sector to explain the gravitation waves, with a focus on the collider tests via a minimal Higgs portal. I will demonstrate that to explain the observed gravitational waves, the Higgs...

23. Have pulsar timing array methods detected a cosmological phase transition?

Prof. Antonino Marciano (Fudan University and INFN Frascati)

24/09/2023, 09:00

We show [1] that the recent detection of a gravitational wave (GW) background reported by various pulsar timing array (PTA) collaborations including NANOGrav-15yr, PPTA, EPTA, and CPTA can be explained in terms of first order phase transitions (FOPTs) from dark sector models (DSM). Specifically, we explore a model for first order phase transitions that involves the majoron, a Nambu-Goldstone...

25. Detecting High-Frequency Gravitational Waves with Astronomical Tools

Tao Liu (HKUST)

24/09/2023, 09:30

TBD

32. First Order Phase Transitions: How, When and Why?

Andrea Addazi (SiChuan University)