7 papers
Shadow Completion in Celestial OPEs
Reiko Liu, Zijian Liu, Wen-Jie Ma
We argue that celestial OPEs must be supplemented by shadow-basis operators. Although the shadow transform does not introduce new bulk degrees of freedom, it provides a distinct pr…
Carrollian holography with agentic AI: Real mass is imaginary
Reiko Liu, Wen-Jie Ma, Hu Zheng +1
We introduce LACIA, a verification-driven agentic AI workflow for theoretical physics, and apply it with independent human checks to construct Carrollian conformal bases. We develo…
Unifying soft and hard dynamics: The hard current algebra in celestial holography
Reiko Liu, Wen-Jie Ma
Soft current algebras capture the infrared structure of scattering in asymptotically flat spacetimes, but an analogous algebraic description of finite-energy dynamics has been miss…
Regular celestial amplitudes
Reiko Liu, Wen-Jie Ma
Conventional massless celestial amplitudes are distributional and fail to realize the celestial OPE -- most sharply in the non-MHV paradox, where OPEs predict nonzero celestial amp…
Celestial Optical Theorem
Reiko Liu, Wen-Jie Ma
We establish the nonperturbative celestial optical theorem from the unitarity of -matrix. This theorem provides a set of nonperturbative bootstrap equations of the conformal par…
Massive celestial amplitudes and celestial amplitudes beyond four points
Reiko Liu, Wen-Jie Ma
We compute scalar three-point celestial amplitudes involving two and three massive scalars. The three-point coefficient of celestial amplitudes with two massive scalars contains a…