TY  - JOUR
AU  - Bueno Rogerio, R. J.
AU  - Lima, R. D.
AU  - Duarte, L.
AU  - Hoff da Silva, J. M.
AU  - Dias, M.
AU  - Senise, C. R.
PY  - 2019
DA  - 2019//
TI  - Mass-dimension-one fermions and their gravitational interaction
T2  - EPL
JO  - Europhysics Letters
SP  - 20004
EP  - 6pp
VL  - 128
IS  - 2
PB  - Iop Publishing Ltd
AB  - We investigate in detail the interaction between the spin-(1/2) field endowed with mass dimension one and the graviton. We obtain an interaction vertex that combines the characteristics of scalar-graviton and Dirac's fermion-graviton vertices, due to the scalar-dynamic attribute and the fermionic structure of the mass-dimension-one field. It is shown that this vertex obeys the Ward-Takahashi identity, ensuring the gauge invariance for the interaction. In the contribution of the mass-dimension-one fermion to the graviton propagator at one-loop level, we found the conditions for the cancellation of the tadpole term by a cosmological counterterm. We calculate the scattering process for arbitrary momentum. For low energies, the result reveals that only the scalar sector present in the vertex contributes to the gravitational potential. Finally, we evaluate the non-relativistic limit of the gravitational interaction and obtain an attractive Newtonian potential, as required for a dark-matter candidate.
SN  - 0295-5075
UR  - https://arxiv.org/abs/1902.01379
UR  - https://doi.org/10.1209/0295-5075/128/20004
DO  - 10.1209/0295-5075/128/20004
LA  - English
N1  - WOS:000518763000003
ID  - BuenoRogerio_etal2019
ER  -