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   Articles with "quantum fluctuations" as a keyword



Building flat space-time from information exchange between quantum fluctuations

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recommendations! 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

Markov model of quantum fluctuations at the transition to lasing of semiconductor nanolasers

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recommendations! 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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recommendations! 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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recommendations! 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

Quantum fluctuations can enhance or reduce positional uncertainty at finite temperature

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recommendations! Published in 2025 at "Journal of Statistical Mechanics: Theory and Experiment"

DOI: 10.1088/1742-5468/adfcc5

Abstract: The uncertainty principle guarantees a non-zero value for the positional uncertainty, ⟨Δx2⟩>0, even without thermal fluctuations. This implies that quantum fluctuations inherently enhance positional uncertainty at zero temperature. A natural question then arises: what happens… read more here.

Keywords: temperature; reduce positional; quantum fluctuations; uncertainty ... See more keywords

Ferrimagnetism from quantum fluctuations in Kitaev materials

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recommendations! Published in 2025 at "Physical Review B"

DOI: 10.1103/77j9-wh8n

Abstract: Ferrimagnetism appears in the temperature-field phase diagrams of several candidate Kitaev materials, such as the honeycomb cobaltates Na$_2$Co$_2$TeO$_6$ and Na$_3$Co$_2$SbO$_6$. In a number of instances, however, the exact nature of the corresponding ground states remains… read more here.

Keywords: ferrimagnetism quantum; ground state; symmetry; quantum fluctuations ... 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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recommendations! 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

Tuning the two-step melting of magnetic order in a dipolar kagome spin ice by quantum fluctuations

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recommendations! 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

Stress energy correlator in de Sitter spacetime: Its conformal masking or growth in connected Friedmann universes

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recommendations! 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

Quantum fluctuations of entropy production for fermionic systems in the Landauer-Büttiker state.

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recommendations! 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

Quantum Fluctuations along Symmetry Crossover in a Kondo-Correlated Quantum Dot.

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recommendations! 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