Question
In 2015, Strominger et al. showed that a result named for these particles was a Ward identity of certain BMS supertranslations. They’re not photons, but the change in the S matrix when a zero momentum one of these particles is added to a vertex is given by that result, which is Weinberg’s theorem on the “soft” examples of these particles. Two-loop Feynman diagrams of interactions between these particles lead to ultraviolet (*) divergence, but one-loop diagrams are finite due to a Gauss–Bonnet counterterm. The self-interaction of these particles reproduces an action proportional to “square root of negative det g.” These particles are coupled to the stress–energy tensor and hence are only radiated by quadrupole sources. These particles correspond to quantization of the Einstein–Hilbert action. For 10 points, name these spin-2 massless particles that mediate the weakest fundamental force. ■END■
Buzzes
Summary
Tournament | Edition | Exact Match? | TUH | Conv. % | Power % | Neg % | Average Buzz |
---|---|---|---|---|---|---|---|
2024 Chicago Open | 07/28/2024 | Y | 12 | 100% | 8% | 25% | 114.92 |