Quantum simulation of particle creation in curved space-time

Autor: Frank K. Wilhelm, Raphael P. Schmit, Bruno G. Taketani
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Phonon
Quantum simulator
Astronomical Sciences
01 natural sciences
General Relativity and Quantum Cosmology
010305 fluids & plasmas
Nanotechnology
Scattering
Radiation
Particle Spin
Curved space
Materials
Physics
Quantum Physics
Multidisciplinary
Magnetism
Acoustic wave
Condensed Matter Physics
Celestial Objects
Physical Sciences
Phonons
Engineering and Technology
Medicine
Hawking radiation
Research Article
Black Holes
Wave propagation
Science
Materials Science
FOS: Physical sciences
Electrons
General Relativity and Quantum Cosmology (gr-qc)
Quantum mechanics
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
0103 physical sciences
Quantum Dots
Computer Simulation
Particle Size
010306 general physics
Particle Physics
Quantum fluctuation
Sound Waves
Condensed Matter - Mesoscale and Nanoscale Physics
Collective Excitations
Acoustics
Micro-Electrical-Mechanical Systems
Models
Theoretical
Black hole
Magnetic Fields
Semiconductors
Waves
Wave Propagation
Quantum Physics (quant-ph)
Zdroj: PLoS ONE, Vol 15, Iss 3, p e0229382 (2020)
PLoS ONE
ISSN: 1932-6203
Popis: Conversion of vacuum fluctuations into real particles was first predicted by L. Parker considering an expanding universe, followed in S. Hawking's work on black hole radiation. Since their experimental observation is challenging, analogue systems have gained attention in the verification of this concept. Here we propose an experimental set-up consisting of two adjacent piezoelectric semiconducting layers, one of them carrying dynamic quantum dots (DQDs), and the other being p-doped with an attached gate on top, which introduces a space-dependent layer conductivity. The propagation of surface acoustic waves (SAWs) on the latter layer is governed by a wave equation with an effective metric. In the frame of the DQDs, this space- and time-dependent metric possesses a sonic horizon for SAWs and resembles that of a two dimensional non-rotating and uncharged black hole to some extent. The non-thermal steady state of the DQD spin indicates particle creation in form of piezophonons.
9 pages, 2 figures, reinterpration of results and new conclusion
Databáze: OpenAIRE
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