Cavity Detection of Gravitational Waves: Where Do We Stand? Claudio Gatti, Luca Visinelli, and Michael Zantedeschi summarize the current state of research on detecting high-frequency gravitational waves (HFGWs) using resonant cavities. They analyze the sensitivity of existing and planned cavities to detect HFGWs, focusing on signals from the merging of compact objects, such as primordial black holes (PBHs) in the asteroid mass range. The study highlights the challenges posed by the coherence of the source and the limitations in detecting HFGWs due to the actual physical properties of the sources. They compare the results with previous studies and emphasize the importance of considering the coherence of the source in the experimental reach. The authors also discuss the potential for detecting stochastic gravitational wave backgrounds and the implications for fundamental physics and cosmology. The paper outlines the methods used to calculate the sensitivity of the cavities and the results of the analysis, showing that the detection of HFGWs is challenging but possible with the right experimental setups. The study concludes that while the current experimental reach is limited, future experiments may provide new insights into the nature of HFGWs and their sources.Cavity Detection of Gravitational Waves: Where Do We Stand? Claudio Gatti, Luca Visinelli, and Michael Zantedeschi summarize the current state of research on detecting high-frequency gravitational waves (HFGWs) using resonant cavities. They analyze the sensitivity of existing and planned cavities to detect HFGWs, focusing on signals from the merging of compact objects, such as primordial black holes (PBHs) in the asteroid mass range. The study highlights the challenges posed by the coherence of the source and the limitations in detecting HFGWs due to the actual physical properties of the sources. They compare the results with previous studies and emphasize the importance of considering the coherence of the source in the experimental reach. The authors also discuss the potential for detecting stochastic gravitational wave backgrounds and the implications for fundamental physics and cosmology. The paper outlines the methods used to calculate the sensitivity of the cavities and the results of the analysis, showing that the detection of HFGWs is challenging but possible with the right experimental setups. The study concludes that while the current experimental reach is limited, future experiments may provide new insights into the nature of HFGWs and their sources.