Toy models of black hole, white hole and wormhole: thermal effects and information loss problem

Abstract

In this paper, by setting proper boundaries in the Minkowski spacetime, we construct three toy model spacetimes, a toy black hole, a toy white hole, and a toy wormhole. Based on these model spacetimes, we discuss the Hawking radiation and the information loss problem. By counting the number of the field modes inside and outside the horizon, we show the thermal radiation of the toy black hole. We show that the white hole have a thermal absorption. We show that in the whole toy wormhole spacetime, there is no information lost. In addition, we show the black hole radiation and the white hole absorption are independent of the choices of boundary conditions at the singularity. We also show the physical effects caused by two particular boundary conditions.

References in corpus (13)

• Observation of quantum Hawking radiation and its entanglement in an analogue black hole
• Observation of self-amplifying Hawking radiation in an analog black hole laser
• Observation of thermal Hawking radiation at the Hawking temperature in an analogue black hole
• Black-hole radiation in Bose-Einstein condensates
• Hawking black body spectrum from tunneling mechanism
• Black hole and Hawking radiation by type-II Weyl fermions
• Hawking radiation of Dirac particles via tunneling from Kerr black hole
• Quasinormal modes, scattering and Hawking radiation in the vicinity of Einstein-dilaton-Gauss-Bonnet black hole
• The Information Paradox for Black Holes
• Hawking Radiation of Spin-1 Particles From Three Dimensional Rotating Hairy Black Hole
• Black hole radiation of massive spin-2 particles in (3+1) dimensions
• Scattering state and bound state of scalar field in Schwarzschild spacetime: Exact solution
• Scalar scattering in Schwarzschild spacetime: Integral equation method