For even convex polynomially bounded dispersion relations, an effective horizon controls the outgoing modes so that Bogoliubov coefficients agree with the tunneling result and the emission spectrum deviates from exact thermality in a controlled way.
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Simulations indicate that negative-curvature graphene membranes can form stable analogue horizons whose local density of states exhibits thermal character at a few tens of Kelvin.
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Hawking radiation with dispersion: reconciling the Bogoliubov and tunneling approaches
For even convex polynomially bounded dispersion relations, an effective horizon controls the outgoing modes so that Bogoliubov coefficients agree with the tunneling result and the emission spectrum deviates from exact thermality in a controlled way.
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Exploring Event Horizons and Hawking Radiation through Deformed Graphene Membranes
Simulations indicate that negative-curvature graphene membranes can form stable analogue horizons whose local density of states exhibits thermal character at a few tens of Kelvin.