Analogue Gravitational Dynamics

Dear Colleagues,

Analogue gravity models provide a powerful test-bed for simulating in condensed-matter systems the propagation of fields on curved spacetime geometries and related phenomena, such as, e.g., Hawking radiation, superradiance, and cosmological particle production. These models generally consider the evolution of linearized fluctuations over a given background solution of the full nonlinear problem. As such, the gravitational analogy works only at the kinematical level: while the curved spacetime determines the propagation of the elementary excitations, it is not affected by the excitations propagating on it. However, it was later realized that when the first nonlinear corrections (backreaction) are taken into account, some of these models can be generalized to give rise also to a kind of gravitational dynamics.

This Special Issue is intended to collect contributions aimed at exploring this side of the analogy, i.e., focusing on condensed-matter systems and emergent analogue gravitational dynamics, both at the “Newtonian” and “relativistic” levels. Topics of interest include (but are not limited to) massive elementary excitations and back-reaction effects, the emergence of Newtonian and Lorentz invariant gravitational interactions, the geometrization of field dynamics, etc. Both research and review papers are welcomed.

Dr. Francesco Marino
Dr. Alessio Belenchia
Guest Editors

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