3 papers
hep-th2026
Loop integrals in de Sitter spacetime: The parity-split IBP system and -form differential equations
Jiaqi Chen, Bo Feng, Zhehan Qin +1
We develop integration-by-parts (IBP) reduction and differential equations for massive loop integrals of cosmological correlators in de Sitter (dS) spacetime, demonstrating the fea…
hep-th2025
-split from Feynman diagrams and Expansions
Bo Feng, Liang Zhang, Kang Zhou
In this paper, we investigate the -split behavior of tree-level amplitudes of bi-adjoint scalar (BAS), Yang-Mills (YM), non-linear sigma model (NLSM), and general relativity (GR…
hep-th2025
Hidden Zeros and -split via BCFW Recursion Relation
Bo Feng, Liang Zhang, Kang Zhou
In this paper, we provide another angle to understand recent discoveries, i.e., the hidden zeros and corresponding 2-split behavior using the BCFW recursion relation. For the hidde…