Changhyun Ahn

collaborators

3 papers

hep-th2026

A Charged and Neutral Spin- $4$ Currents in the Grassmannian-like Coset Model

Changhyun Ahn, Minsu Kang

By calculating the second order pole in the operator product expansion (OPE) of the charged spin- $3$ current with the neutral spin- $3$ current in the Grassmannian-like coset model,…

hep-th2026

Toward A Celestial Soft Symmetry Algebra in the $N = 8$ Supergravity

Changhyun Ahn, Man Hea Kim

From the classical $S O (N = 8)$ extended superconformal algebra between the lowest $N = 8$ multiplet in two dimensions obtained by Ademollo et al. (1976), we generalize it…

hep-th2025

A Supersymmetric $w_{1 + \infty}$ Symmetry, the Extended Supergravity and the Celestial Holography

Changhyun Ahn, Man Hea Kim

We determine the $N = 4$ supersymmetric $W_{1 + \infty}^{2, 2} [I^» = \frac{1}{4}]$ algebra which is an extension of $N = 4$ $S O (4)$ superconformal algebra with vanishing centra…

A Charged and Neutral Spin-4 Currents in the Grassmannian-like Coset Model

Toward A Celestial Soft Symmetry Algebra in the N=8 Supergravity

A Supersymmetric w1+∞​ Symmetry, the Extended Supergravity and the Celestial Holography

A Charged and Neutral Spin- $4$ Currents in the Grassmannian-like Coset Model

Toward A Celestial Soft Symmetry Algebra in the $N = 8$ Supergravity

A Supersymmetric $w_{1 + \infty}$ Symmetry, the Extended Supergravity and the Celestial Holography