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CONTRADICTIONS. “The existence of a black hole event horizon depends on energy conditions that, while reasonable in a classical context, are known to be violated in quantum field theory.” https://lnkd.in/dUKnus8 View in LinkedIn

GOAL. “The main purpose of this paper is to give a more general discussion of how in the quasi-classical framework the black hole can transition to the white hole.” https://lnkd.in/dUKnus8 View in LinkedIn

GUESTS ARRIVING AT A PARTY. “If the late Hawking radiation is entangled with early Hawking radiation rather than with Hawking "partners" inside the horizon, purifying the state for external observers, there are predictions of a "firewall" along the event horizon.” https://lnkd.in/dUKnus8 View in LinkedIn

NEGATIVE ENERGY. “However, prolonged outflow of negative energy to large radii is problematic, since at large radii the energy density violates minimum average energy density theorems proved for quantum field theory in Minkowski spacetime.” https://lnkd.in/dUKnus8 View in LinkedIn

INFORMATION PARADOX. “Quantum information falling across the event horizon is swallowed up by a singularity or disappears into a "baby universe", unless it can propagate acausally. Could it somehow all remain on or outside the event horizon even as the quantum fields propagate into the black hole?” https://lnkd.in/dUKnus8 View in LinkedIn

BUT OF COURSE. “The metric is smoothly continued into the white hole as a function of a coordinate z related to the circumferential radius by r2 = a2 + z2 , and the effective stress-energy tensor has an outflow of negative energy across the white hole horizon to future null infinity.” https://lnkd.in/dUKnus8 View in LinkedIn

TRANSITORY FORM. “Outside the black hole horizon there is a smooth transition to outflow of positive energy Hawking radiation. The transition to the white hole is at a minimum circumferential radius r = a.” https://lnkd.in/dUKnus8 View in LinkedIn

The ephemeral wysteria flowers’ final moments of violet beauty. View in LinkedIn

EVOLUTION TRENDS. “Generally, biological evolutions are increases of complexity and bio-information. They should correspond to entropy decrease.” https://lnkd.in/d_VMqBf View in LinkedIn

YIKES! “I described a class of spherically symmetric models for an evaporating black hole evolving into a white hole, based on an explicit ansatz for the form of the metric, with a negative energy inflow of Hawking "partners" along ingoing radial null geodesics in the interior of the black hole.” https://lnkd.in/dUKnus8 View in LinkedIn