Artigo
Charged three-body system with arbitrary masses near conformal invariance
Fecha
2009-11-01Registro en:
Physical Review A. College Pk: Amer Physical Soc, v. 80, n. 5, p. 5, 2009.
1050-2947
10.1103/PhysRevA.80.052509
WOS:000272310000079
WOS000272310000079.pdf
8621258845956348
Autor
Universidade Federal Fluminense (UFF)
Instituto Tecnológico de Aeronáutica (ITA)
Universidade Estadual Paulista (Unesp)
Centro Brasileiro de Pesquisas Físicas (CBPF)
Resumen
Within an adiabatic approximation to the three-body Coulomb system, we study the strength of the leading-order conformaly invariant attractive dipole interaction produced when a slow charged particle q(3) (with mass m(3)) is captured by the first-excited state of a dimer [with individual masses and charges (m(1),q(1)) and (m(2),q(2)=-q(1))]. The approach leads to a universal mass-charge critical condition for the existence of three-body level condensation, (m(1)(-1)+m(2)(-1))/[(m(1)+m(2))(-1)+m(3)(-1)]>vertical bar q(1)/(24q(3))vertical bar, as well as the ratio between the geometrically scaled energy levels. The resulting expressions can be relevant in the analysis of recent experimental setups with charged three-body systems, such as the interactions of excitons, or other matter-antimatter dimers, with a slow charged particle.