Gravity Seminars

Measurement of gravitational waves can give precision tests of the nature of black holes and compact objects. In this work, Giddings' nonviolent nonlocality proposal is tested with gravitational waves. It posits that the quantum information is transferred by viable metric perturbations due to a nonlocal interaction. In contrast to firewalls, these quantum fluctuations would be spread out over a larger distance range — up to a Schwarzschild radius away. We modify the nonspinning EOBNRv2 effective one body waveform to include metric perturbations that are due to a random Gaussian process. The waveform exhibits random deviations which are particularly important in the late inspiral-plunge phase. We find an optimal dephasing parameter for detecting this effect with a principal component analysis. Nonviolent nonlocality predicts that the dephasing parameter will be random across different gravitational wave events. We estimate the constraint on the perturbations in nonviolent nonlocality with events for the LIGO-Virgo network and for a third generation network. We found that the typical dephasing that nonviolent nonlocality gives is different than the power law behavior in the parameterized post-Einsteinian framework. We show how using any model to search for phase deviation is receptive to this, and show this can be geometrically understood by examining the signal manifold.