Analogue cosmological particle creation in an ultracold quantum fluid of light

• URL: http://arxiv.org/abs/2102.08279v1
• Date: Tue, 16 Feb 2021 17:01:36 GMT
• Title: Analogue cosmological particle creation in an ultracold quantum fluid of light
• Authors: Jeff Steinhauer, Murad Abuzarli, Tangui Aladjidi, Tom Bienaim\'e, Clara Piekarski, Wei Liu, Elisabeth Giacobino, Alberto Bramati and Quentin Glorieux
• Abstract summary: We report the spontaneous creation of analogue cosmological particles in a quantum fluid. We observe acoustic peaks in the density power spectrum, in close quantitative agreement with the quantum-field theoretical prediction. This work introduces a new quantum fluid, as cold as an atomic Bose-Einstein condensate.
• Score: 3.8615606427366194
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In inflationary cosmology, the rapid expansion of the early universe resulted in the spontaneous production of cosmological particles from vacuum fluctuations, observable today in the cosmic microwave background anisotropies. The analogue of cosmological particle creation in a quantum fluid could provide insight, but an observation has not yet been achieved. Here we report the spontaneous creation of analogue cosmological particles in the laboratory, using a quenched 3-dimensional quantum fluid of light. We observe acoustic peaks in the density power spectrum, in close quantitative agreement with the quantum-field theoretical prediction. We find that the long-wavelength particles provide a window to early times, and we apply this principle to the cosmic microwave background. This work introduces a new quantum fluid, as cold as an atomic Bose-Einstein condensate.

Related papers

• Is Planckian discreteness observable in cosmology? [47.03992469282679]
  A Planck scale inflationary era produces the scale invariant spectrum of inhomogeneities with very small tensor-to-scalar ratio of perturbations. Here we evoke the possibility that some of the major puzzles in cosmology would have an explanation rooted in quantum gravity.
  arXiv  Detail & Related papers  (2024-05-21T06:53:37Z)
• A Theory of Quantum Jumps [44.99833362998488]
  We study fluorescence and the phenomenon of quantum jumps'' in idealized models of atoms coupled to the quantized electromagnetic field. Our results amount to a derivation of the fundamental randomness in the quantum-mechanical description of microscopic systems.
  arXiv  Detail & Related papers  (2024-04-16T11:00:46Z)
• Observations in Quantum Cosmology [0.0]
  We look at whether a canonical quantization of general relativity can produce testable predictions for cosmology. In particular, we examine how this approach can be used to model the evolution of primordial perturbations. We conclude that the subject of quantum geometrodynamics illuminates conceptual issues in quantum gravitation.
  arXiv  Detail & Related papers  (2023-06-26T18:00:01Z)
• Fermion production at the boundary of an expanding universe: a cold-atom gravitational analogue [68.8204255655161]
  We study the phenomenon of cosmological particle production of Dirac fermions in a Friedman-Robertson-Walker spacetime. We present a scheme for the quantum simulation of this gravitational analogue by means of ultra-cold atoms in Raman optical lattices.
  arXiv  Detail & Related papers  (2022-12-02T18:28:23Z)
• Cosmological Particle Production: A Review [0.0]
  The needed formalism of quantum field theory in curved spacetime will be summarized. Estimates for the creation rate will be given and applied to inflationary cosmology models. Analog models which illustrate the same physical principles and may be experimentally realizable are also discussed.
  arXiv  Detail & Related papers  (2021-12-04T23:09:33Z)
• The de Broglie-Bohm Quantum Theory and its Application to Quantum Cosmology [0.0]
  We review the de Broglie-Bohm quantum theory. It is an alternative description of quantum phenomena in accordance with all the quantum experiments already performed.
  arXiv  Detail & Related papers  (2021-11-04T17:59:20Z)
• Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
  We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators. We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure. The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
  arXiv  Detail & Related papers  (2021-05-27T18:00:02Z)
• New Stringy Physics beyond Quantum Mechanics from the Feynman Path Integral [0.0]
  We prove that elementary quantum particle dynamics are directly associated to single compact (cyclic) world-line parameters. This allows us to formulate a novel purely four-dimensional stringy description of elementary particles as possible physics beyond quantum mechanics.
  arXiv  Detail & Related papers  (2021-03-22T09:02:38Z)
• Classical Physics and Hamiltonian Quantum Mechanics as Relics of the Big Bang [0.0]
  We discuss the origin of the "quasiclassical realm" of familiar experience and Hamiltonian quantum mechanics. It is argued that these features of the universe are not general properties of quantum theory, but rather approximate features that are emergent after the Planck time.
  arXiv  Detail & Related papers  (2021-03-15T17:42:46Z)
• Analog cosmological reheating in an ultracold Bose gas [58.720142291102135]
  We quantum-simulate the reheating-like dynamics of a generic cosmological single-field model in an ultracold Bose gas. Expanding spacetime as well as the background oscillating inflaton field are mimicked in the non-relativistic limit. The proposed experiment has the potential of exploring the evolution up to late times even beyond the weak coupling regime.
  arXiv  Detail & Related papers  (2020-08-05T18:00:26Z)
• Quantum Hall phase emerging in an array of atoms interacting with photons [101.18253437732933]
  Topological quantum phases underpin many concepts of modern physics. Here, we reveal that the quantum Hall phase with topological edge states, spectral Landau levels and Hofstadter butterfly can emerge in a simple quantum system. Such systems, arrays of two-level atoms (qubits) coupled to light being described by the classical Dicke model, have recently been realized in experiments with cold atoms and superconducting qubits.
  arXiv  Detail & Related papers  (2020-03-18T14:56:39Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.