TY - GEN AU - de la Cruz,Leonardo AU - Kniss,Alexander AU - Weinzierl,Stefan TI - Double Copies of Fermions as Matter that Interacts Only Gravitationally SN - 1079-7114 PY - 2018///0126 N1 - Publication Type: Journal Article UR - https://doi.org/10.1103/PhysRevLett.116.201601 ER -