TY - JOUR
T1 - Greybody factors and quasinormal modes for a nonminimally coupled scalar field in a cloud of strings in (2 + 1)-dimensional background
AU - RINCON RIVERO, ANGEL
AU - Panotopoulos, Grigoris
PY - 2018/10/1
Y1 - 2018/10/1
N2 - We study the propagation of a probe massless nonminimally coupled scalar field in a fixed gravitational background of a cloud of strings in (2 + 1) dimensions. We obtain exact analytical expressions for the reflection coefficient, the absorption cross section, the decay rate as well as the quasinormal frequencies. The impact of the nonminimal coupling is investigated in detail. Our results show that universality is not respected in general, and that scalar perturbations are stable.
AB - We study the propagation of a probe massless nonminimally coupled scalar field in a fixed gravitational background of a cloud of strings in (2 + 1) dimensions. We obtain exact analytical expressions for the reflection coefficient, the absorption cross section, the decay rate as well as the quasinormal frequencies. The impact of the nonminimal coupling is investigated in detail. Our results show that universality is not respected in general, and that scalar perturbations are stable.
UR - http://www.scopus.com/inward/record.url?scp=85055425660&partnerID=8YFLogxK
U2 - 10.1140/epjc/s10052-018-6352-5
DO - 10.1140/epjc/s10052-018-6352-5
M3 - Article
AN - SCOPUS:85055425660
VL - 78
JO - European Physical Journal C
JF - European Physical Journal C
SN - 1434-6044
IS - 10
M1 - 858
ER -