Articles with "quantum fluctuations" as a keyword



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Building flat space-time from information exchange between quantum fluctuations

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Published in 2019 at "Journal of High Energy Physics"

DOI: 10.1007/jhep07(2019)140

Abstract: Abstract We consider a hypothesis in which classical space-time emerges from information exchange (interactions) between quantum fluctuations in the gravity theory. In this picture, a line element would arise as a statistical average of how… read more here.

Keywords: information exchange; quantum fluctuations; space time; space ... See more keywords
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Markov model of quantum fluctuations at the transition to lasing of semiconductor nanolasers

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Published in 2019 at "Physica E: Low-dimensional Systems and Nanostructures"

DOI: 10.1016/j.physe.2018.08.028

Abstract: A Markov model of semiconductor nanolaser is constructed in order to describe finely the effects of quantum fluctuations in the dynamics of the laser, in particular by considering the transition to lasing. Nanolasers are expected… read more here.

Keywords: quantum fluctuations; semiconductor; transition lasing; model ... See more keywords
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An introduction to quantum optics and quantum fluctuations

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Published in 2019 at "Contemporary Physics"

DOI: 10.1080/00107514.2019.1660717

Abstract: The quantum theory of light is central to an understanding of the world around us on the most fundamental level. Quantum optics treats everything from the relatively mundane phenomenon of spontaneo... read more here.

Keywords: quantum; quantum fluctuations; quantum optics; optics ... See more keywords
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Quantum fluctuations in percolating superconductors: an evolution with effective dimensionality.

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Published in 2017 at "Nanotechnology"

DOI: 10.1088/1361-6528/aa5e88

Abstract: We investigate percolating films of superconducting nanoparticles and observe an evolution from superconducting to metallic to insulating states as the surface coverage of the nanoparticles is decreased. We demonstrate that this evolution is correlated with… read more here.

Keywords: quantum fluctuations; superconductors evolution; dimensionality; evolution effective ... See more keywords
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Nature of the Lamb shift in weakly anharmonic atoms: From normal-mode splitting to quantum fluctuations

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Published in 2018 at "Physical Review A"

DOI: 10.1103/physreva.98.053808

Abstract: When a two-level system (TLS) is coupled to an electromagnetic resonator, its transition frequency changes in response to the quantum vacuum fluctuations of the electromagnetic field, a phenomenon known as the Lamb shift. Remarkably, by… read more here.

Keywords: shift; lamb shift; quantum fluctuations; mode splitting ... See more keywords
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Tuning the two-step melting of magnetic order in a dipolar kagome spin ice by quantum fluctuations

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Published in 2020 at "Physical Review B"

DOI: 10.1103/physrevb.101.134414

Abstract: Complex magnetic orders in frustrated magnets may exhibit rich melting processes when the magnet is heated toward the paramagnetic phase. We show that one may tune such melting processes by quantum fluctuations. We consider a… read more here.

Keywords: quantum fluctuations; sqrt ifmmode; order; transverse field ... See more keywords
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Stress energy correlator in de Sitter spacetime: Its conformal masking or growth in connected Friedmann universes

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Published in 2020 at "Physical Review D"

DOI: 10.1103/physrevd.102.085009

Abstract: Semiclassical Physics in gravitational scenario, in its first approximation (1st order) cares only for the expectation value of stress energy tensor and ignores the inherent quantum fluctuations thereof. In the approach of stochastic gravity, on… read more here.

Keywords: quantum fluctuations; physics; friedmann universes; stress energy ... See more keywords
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Quantum fluctuations of entropy production for fermionic systems in the Landauer-Büttiker state.

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Published in 2017 at "Physical Review E"

DOI: 10.1103/physreve.96.052124

Abstract: The quantum fluctuations of the entropy production for fermionic systems in the Landauer-Büttiker nonequilibrium steady state are investigated. The probability distribution, governing these fluctuations, is explicitly derived by means of quantum field theory methods and… read more here.

Keywords: quantum fluctuations; production; fluctuations entropy; entropy production ... See more keywords
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Quantum Fluctuations along Symmetry Crossover in a Kondo-Correlated Quantum Dot.

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Published in 2017 at "Physical review letters"

DOI: 10.1103/physrevlett.118.196803

Abstract: Universal properties of entangled many-body states are controlled by their symmetry and quantum fluctuations. By the magnetic-field tuning of the spin-orbital degeneracy in a Kondo-correlated quantum dot, we have modified quantum fluctuations to directly measure… read more here.

Keywords: quantum fluctuations; along symmetry; correlated quantum; kondo correlated ... See more keywords
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Quantum Fluctuations in Quasi-One-Dimensional Dipolar Bose-Einstein Condensates.

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Published in 2017 at "Physical review letters"

DOI: 10.1103/physrevlett.119.050403

Abstract: Recent experiments have revealed that beyond-mean-field corrections are much more relevant in weakly interacting dipolar condensates than in their nondipolar counterparts. We show that in quasi-one-dimensional geometries quantum corrections in dipolar and nondipolar condensates are… read more here.

Keywords: quantum fluctuations; one dimensional; physics; fluctuations quasi ... See more keywords
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Chaotic Dynamical Ferromagnetic Phase Induced by Nonequilibrium Quantum Fluctuations.

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Published in 2018 at "Physical review letters"

DOI: 10.1103/physrevlett.120.130603

Abstract: We investigate the robustness of a dynamical phase transition against quantum fluctuations by studying the impact of a ferromagnetic nearest-neighbor spin interaction in one spatial dimension on the nonequilibrium dynamical phase diagram of the fully… read more here.

Keywords: phase; quantum fluctuations; dynamical ferromagnetic; dynamical phase ... See more keywords