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gr-qc2025
Constraints on Genesis Cosmology from the Smeared Null Energy Condition
Dong-Hui Yu, Mian Zhu, Yong Cai
The violation of the null energy condition (NEC) is essential for constructing nonsingular cosmological scenarios, such as Genesis cosmology, which avoids the initial singularity b…
gr-qc2025★ 8 cited
Null energy condition violation and beyond Horndeski physics in light of DESI DR2 data
Gen Ye, Yong Cai
Inflation and dark energy (DE), both featuring accelerated expansion, are crucial components of modern cosmology. As indicated by singularity theorems, null energy condition (NEC)…