SPCS 2026: 70th Anniversary of the Discovery of Parity Nonconservation and Prospects in Frontier Physics & SPCS 2026 Summer School

Session

Session I (Day 2)

23 Jun 2026, 09:00

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

Conveners

Session I (Day 2)

• Yi Yang

35. Extra-Dimensional Axions: Axion Quality and Phenomenology

Prof. Kiwoon Choi

23/06/2026, 09:00

Plenary Talk

I discuss characteristic features of extra-dimensional axions arising from higher-dimensional gauge fields. Particular attention will be paid to the axion quality needed to solve the strong CP problem and to distinctive features of their low-energy couplings compared with conventional four-dimensional field-theoretic axions.

17. Analogue of Chern-Simons invariant in non-metricity gravity and axion cosmology

Shin'ichi Nojiri (Nagoya University/KEK)

23/06/2026, 09:30

Plenary Talk

This talk is mainly based on the paper 2504.09218, a joint study with Sergei D. Odintsov.
We consider a pseudo-scalar quantity analogous to the Chern-Simons invariant within the framework of non-metric gravity.
By taking into account the coupling between this pseudoscalar and the axion, we present a scenario that may solve the axion misalignment problem, the S8 problem, and issues concerning...

28. Theoretical Predictions and the Little Red Dots in the Universe

YU QING LOU (Tsinghua University)

23/06/2026, 10:00

Plenary Talk

James Webb Space Telescope (JWST) discovered remarkably numerous Little Red Dots (LRDs) in the Universe for a wide redshift z range from ~2 to ~7. Such LRDs, characterized by prominent V shaped continuum spectra with unusually broad Hα and Hβ lines (FWHM ~10^3 to ~10^4 km/s), are inferred to be extremely luminous, compact, massive, metal poor yet without detectable X-ray and radio emissions....