Anomalous Heat Flows and Quantum Otto Engine with (In)definite Causal OrderRemoveQing-Feng Xue, Qi Zhang, Xu-Cai Zhuang, Ying-Jie Zhang, Yun-Jie Xia, Enrico Russo, Giulio Chiribella, Rosario Lo Franco, and Zhong-Xiao ManPhys. Rev. Lett. 137, 030404 (2026)
