Supersymmetric world from a conservative viewpoint
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Lubos,At what point do you think the theoretical physics community would start seriously worrying about a lack of gravitational wave detection?On the one hand, we've seen the decay in neutron star orbits, and LIGO is quite the marvel of engineering. On the other hand... you never know...
David,I think that a theorist would only start to be afraid of general relativity's well-being once we had a semi-reliable lower bound on the number and intensity of various gravity wave sources that would exceed the upper bound set by LIGO and similar experiments. We don't have such a contradiction now, of course.I think that even if LIGO is gonna see nothing - even in the future - it is still a good investment to try to build the even more sensitive gadgets because if they get better, they could tell us new kinds of things about the Universe.