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Applied Sciences
Special Issues
Analogue Gravitational Dynamics
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Analogue Gravitational Dynamics

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Quantum Science and Technology".

Deadline for manuscript submissions: closed (31 January 2022) | Viewed by 4473

Special Issue Editors

Dr. Francesco Marino

E-Mail Website
Guest Editor
National Institute of Optics INO, Italian National Research Council, Rome, Italy
Interests: analogue gravity; nonlinear dynamics; nonlinear and quantum optics; opto-mechanics; quantum gravity phenomenology
Dr. Alessio Belenchia

E-Mail Website
Guest Editor
Centre for Theoretical Atomic, Molecular, and Optical Physics, School of Mathematics and Physics, Queens University, Belfast BT7 1NN, UK
Interests: analogue gravity; gravitational quantum physics; quantum gravity phenomenology; quantum information; quantum mechanics; quantum thermodynamics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

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

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Analogue gravity
  • Quantum field theory in curved spacetime
  • Emergent gravity
  • Classical and quantum fluids
  • Geometrodynamic
  • Quantum gravity phenomenology

Published Papers (2 papers)

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Research

20 pages, 353 KiB  
Article
Toward a Mechanism for the Emergence of Gravity
by Carlos Barceló, Raúl Carballo-Rubio, Luis J. Garay and Gerardo García-Moreno
Appl. Sci. 2021, 11(18), 8763; https://0-doi-org.brum.beds.ac.uk/10.3390/app11188763 - 21 Sep 2021
Cited by 6 | Viewed by 1775
Abstract
One of the main problems that emergent-gravity approaches face is explaining how a system that does not contain gauge symmetries ab initio might develop them effectively in some regime. We review a mechanism introduced by some of the authors for the emergence of [...] Read more.
One of the main problems that emergent-gravity approaches face is explaining how a system that does not contain gauge symmetries ab initio might develop them effectively in some regime. We review a mechanism introduced by some of the authors for the emergence of gauge symmetries in [JHEP 10 (2016) 084] and discuss how it works for interacting Lorentz-invariant vector field theories as a warm-up exercise for the more convoluted problem of gravity. Then, we apply this mechanism to the emergence of linear diffeomorphisms for the most general Lorentz-invariant linear theory of a two-index symmetric tensor field, which constitutes a generalization of the Fierz–Pauli theory describing linearized gravity. Finally we discuss two results, the well-known Weinberg–Witten theorem and a more recent theorem by Marolf, that are often invoked as no-go theorems for emergent gravity. Our analysis illustrates that, although these results pinpoint some of the particularities of gravity with respect to other gauge theories, they do not constitute an impediment for the emergent gravity program if gauge symmetries (diffeomorphisms) are emergent in the sense discussed in this paper. Full article
(This article belongs to the Special Issue Analogue Gravitational Dynamics)
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21 pages, 304 KiB  
Article
Back-Reaction in Canonical Analogue Black Holes
by Stefano Liberati, Giovanni Tricella and Andrea Trombettoni
Appl. Sci. 2020, 10(24), 8868; https://0-doi-org.brum.beds.ac.uk/10.3390/app10248868 - 11 Dec 2020
Cited by 7 | Viewed by 1649
Abstract
We study the back-reaction associated with Hawking evaporation of an acoustic canonical analogue black hole in a Bose–Einstein condensate. We show that the emission of Hawking radiation induces a local back-reaction on the condensate, perturbing it in the near-horizon region, and a global [...] Read more.
We study the back-reaction associated with Hawking evaporation of an acoustic canonical analogue black hole in a Bose–Einstein condensate. We show that the emission of Hawking radiation induces a local back-reaction on the condensate, perturbing it in the near-horizon region, and a global back-reaction in the density distribution of the atoms. We discuss how these results produce useful insights into the process of black hole evaporation and its compatibility with a unitary evolution. Full article
(This article belongs to the Special Issue Analogue Gravitational Dynamics)
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