Analogue gravity

C Barcelo, S Liberati, M Visser - Living reviews in relativity, 2011 - Springer
Analogue gravity is a research programme which investigates analogues of general
relativistic gravitational fields within other physical systems, typically but not exclusively …

Topological steering of light by nematic vortices and analogy to cosmic strings

C Meng, JS Wu, II Smalyukh - Nature Materials, 2023 - nature.com
Liquid crystals are widely known for their technological uses in displays, electro-optics,
photonics and nonlinear optics, but these applications typically rely on defining and …

Rotating curved spacetime signatures from a giant quantum vortex

P Švančara, P Smaniotto, L Solidoro, JF MacDonald… - Nature, 2024 - nature.com
Gravity simulators are laboratory systems in which small excitations such as sound or
surface waves, behave as fields propagating on a curved spacetime geometry. The analogy …

A rapidly expanding Bose-Einstein condensate: an expanding universe in the lab

S Eckel, A Kumar, T Jacobson, IB Spielman… - Physical Review X, 2018 - APS
We study the dynamics of a supersonically expanding, ring-shaped Bose-Einstein
condensate both experimentally and theoretically. The expansion redshifts long-wavelength …

Gibbons-Hawking Effect in the Sonic de Sitter Space-Time<? format?> of an Expanding Bose-Einstein-Condensed Gas

PO Fedichev, UR Fischer - Physical review letters, 2003 - APS
We propose an experimental scheme to observe the Gibbons-Hawking effect in the acoustic
analog of a (1+ 1)-dimensional de Sitter universe, produced in an expanding, cigar-shaped …

Black hole shadows of massive particles and photons in plasma

K Kobialko, I Bogush, D Gal'tsov - Physical Review D, 2024 - APS
Explicitly covariant analytical expressions are derived that describe the boundaries of
shadows cast by massive particles scattered by a gravitating object. This covers scenarios …

“Cosmological” quasiparticle production in harmonically trapped superfluid gases

PO Fedichev, UR Fischer - Physical Review A—Atomic, Molecular, and Optical …, 2004 - APS
We show that a variety of cosmologically motivated effective quasiparticle space-times can
be produced in harmonically trapped superfluid Bose and Fermi gases. We study the analog …

Geometric theory of topological defects: methodological developments and new trends

S Fumeron, B Berche, F Moraes - Liquid Crystals Reviews, 2021 - Taylor & Francis
Liquid crystals generally support orientational singularities of the director field known as
topological defects. These latter modify transport properties in their vicinity as if the geometry …

Gravitational lensing of acoustic charged black holes

NU Molla, U Debnath - The Astrophysical Journal, 2023 - iopscience.iop.org
We study the gravitational lensing of acoustic charged black holes in strong and weak field
limit approximations. For this purpose, we first numerically obtain the deflection limit …

Particle motion and lensing with plasma of acoustic Schwarzschild black hole

A Ditta, T **a, M Yasir - International Journal of Modern Physics A, 2023 - World Scientific
This paper is motivationally based on the study revealing the characteristics of Acoustic
Schwarzschild BHs in respect of particle dynamics, and weak gravitational plasma lensing …