TY - JOUR

T1 - Schwarzschild black hole surrounded by quintessential matter field as an accelerator for spinning particles

AU - Sheoran, Pankaj

AU - Nandan, Hemwati

AU - Hackmann, Eva

AU - Nucamendi, Ulises

AU - Abebe, Amare

N1 - Funding information: The authors would like to thank the anonymous referee for the constructive comments and suggestions which helped us to improve the presentation of this paper. H. N. is thankful to Prof. Philippe Jetzer for invaluable insights and suggestions during the early stage of this work. P. S. would like to thank Programa de Desarrollo Profesional Docente (PRODEP) of the Secretaría de Educacíon Pública (SEP) of the Mexican government, for providing the financial support. H. N. would like to thank Science and Engineering Research Board (SERB), New Delhi, India for financial support through Grant No. EMR/2017/000339. He also thankful to Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune, India (where a part of the work was completed) for support in form of academic visits under its Associateship programme. E. H. is grateful for support from the research training group RTG 1620 “Models of Gravity” and the center of excellence EXC 2123 “QuantumFrontiers,” both funded by the German Research Foundation (DFG). U. N. acknowledges support from PRODEP-SEP, SNI-CONACYT and CIC-UMSNH. A. A. acknowledges that this work is based on the research supported in part by the National Research Foundation (NRF) of South Africa (Grants No. 109257 and No. 112131). He also acknowledges the hospitality of the High Energy and Astroparticle Physics Group of the Department of Physics of Sultan Qaboos University, where part of this work was completed.

PY - 2020/9/16

Y1 - 2020/9/16

N2 - We study the collision of two massive particles with nonzero intrinsic spin moving in the equatorial plane in the background of a Schwarzschild black hole surrounded by quintessential matter field (SBHQ). For the quintessential matter equation of state (EOS) parameter, we assume three different values. It is shown that for collisions outside the event horizon, but very close to it, the centre-of-mass energy (ECM) can grow without bound if exactly one of the colliding particles is what we call near-critical, i.e., if its constants of motion are fine tuned such that the time component of its four-momentum becomes very small at the horizon. In all other cases, ECM only diverges behind the horizon if we respect the Møller limit on the spin of the particles. We also discuss radial turning points and constraints resulting from the requirement of subluminal motion of the spinning particles.

AB - We study the collision of two massive particles with nonzero intrinsic spin moving in the equatorial plane in the background of a Schwarzschild black hole surrounded by quintessential matter field (SBHQ). For the quintessential matter equation of state (EOS) parameter, we assume three different values. It is shown that for collisions outside the event horizon, but very close to it, the centre-of-mass energy (ECM) can grow without bound if exactly one of the colliding particles is what we call near-critical, i.e., if its constants of motion are fine tuned such that the time component of its four-momentum becomes very small at the horizon. In all other cases, ECM only diverges behind the horizon if we respect the Møller limit on the spin of the particles. We also discuss radial turning points and constraints resulting from the requirement of subluminal motion of the spinning particles.

UR - http://www.scopus.com/inward/record.url?scp=85092445290&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.102.064046

DO - 10.1103/PhysRevD.102.064046

M3 - Article

AN - SCOPUS:85092445290

VL - 102

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 6

M1 - 064046

ER -