caa a22 4500 445386673 CHVBK 20180317143034.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10714-011-1191-9 doi (NATIONALLICENCE)springer-10.1007/s10714-011-1191-9 Energy levels of a scalar particle in a static gravitational field close to the black hole limit [Elektronische Daten] [G. Gossel, J. Berengut, V. Flambaum] The bound-state energy levels of a scalar particle in the gravitational field of finite-sized objects with interiors described by the Florides and Schwarzschild metrics are found. For these metrics, bound states with zero energy (where the binding energy is equal to the rest mass of the scalar particle) only exist when a singularity occurs in the metric. Therefore, in contrast to the Coulomb case, no pairs are produced in the non-singular static metric. For the Florides metric the singularity occurs in the black hole limit, while for the Schwarzschild interior metric it corresponds to infinite pressure at the center. Moreover, the energy spectrum is shown to become quasi-continuous as the metric becomes singular. Springer Science+Business Media, LLC, 2011 Bound states nationallicence Klein-Gordon equation nationallicence Black hole nationallicence Gossel G. School of Physics, University of New South Wales, 2052, Sydney, Australia aut Berengut J. School of Physics, University of New South Wales, 2052, Sydney, Australia aut Flambaum V. School of Physics, University of New South Wales, 2052, Sydney, Australia aut General Relativity and Gravitation Springer US; http://www.springer-ny.com 43/10(2011-10-01), 2673-2683 0001-7701 43:10<2673 2011 43 10714 https://doi.org/10.1007/s10714-011-1191-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10714-011-1191-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gossel G. School of Physics, University of New South Wales, 2052, Sydney, Australia aut NATIONALLICENCE 700 1- Berengut J. School of Physics, University of New South Wales, 2052, Sydney, Australia aut NATIONALLICENCE 700 1- Flambaum V. School of Physics, University of New South Wales, 2052, Sydney, Australia aut NATIONALLICENCE 773 0- General Relativity and Gravitation Springer US; http://www.springer-ny.com 43/10(2011-10-01), 2673-2683 0001-7701 43:10<2673 2011 43 10714 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer