We propose a novel black hole model in which singular and regular black holes
are combined as a whole and more precisely singular and regular black holes are
regarded as different states of parameter evolution. We refer to them as
singular and regular states, respectively. Furthermore, the regular state is
depicted by the final state of parameter evolution in the model. We also
present the sources that can generate such a black hole spacetime in the
framework of F(R) gravity. This theory of modified gravity is adopted because
it offers a possible resolution to a tough issue in the thermodynamics of
regular black holes, namely the discrepancy between the thermal entropy and
Wald entropy. The dynamics and thermodynamics of the novel black hole model are
also discussed when a singular state evolves into a regular state during the
change of charge or horizon radius from its initial value to its extreme value.Comment: 36 pages, 23 figures, references adde
