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A statistical method for the estimation of spatial correlation lengths of Gaussian-shaped fluctuating signals with two measurement points is examined to quantitatively evaluate its reliability (variance) and accuracy (bias error). The…

等离子体物理 · 物理学 2016-08-24 Jaewook Kim , Y. U. Nam , M. Lampert , Y. -c. Ghim

Imaging technique is applied to two-proton correlation functions to extract quantitative information about the space-time properties of the emitting source and about the fraction of protons that can be attributed to fast emission…

核实验 · 物理学 2009-11-10 G. Verde , P. Danielewicz , W. G. Lynch , D. A. Brown , C. K. Gelbke , M. B. Tsang , .

The response of a detector to gravitational wave is a function of frequency. When the time a photon moving around in the Fabry-Perot cavities is the same order of the period of a gravitational wave, the phase-difference due to the…

广义相对论与量子宇宙学 · 物理学 2016-08-01 Zhe Chang , Chao-Guang Huang , Zhi-Chao Zhao

Quantum fluctuations of the vacuum stress-energy tensor are highly non-Gaussian, and can have unexpectedly large effects on spacetime geometry. In this paper, we study a two-dimensional dilaton gravity model coupled to a conformal field, in…

广义相对论与量子宇宙学 · 物理学 2020-12-18 S. Carlip , Ricardo A. Mosna , J. P. M. Pitelli

Gravitational waves perturb the paths of photons, impacting both the time-of-flight and the arrival direction of light from stars. Pulsar timing arrays can detect gravitational waves by measuring the variations in the time of flight of…

广义相对论与量子宇宙学 · 物理学 2018-07-18 Logan O'Beirne , Neil J. Cornish

In order to compare theoretical calculations of thermal fluctuations of conserved quantities, such as charge susceptibilities or the specific heat, to experimentally measured correlations and fluctuations in heavy ion collisions, one must…

核理论 · 物理学 2017-05-31 Scott Pratt , Clint Young

Quantum gravity is quite elusive at the experimental level; thus a lot of interest has been raised by recent searches for quantum gravity effects in the propagation of light from distant sources, like gamma ray bursters and active galactic…

综合物理 · 物理学 2010-12-03 Stefano Ansoldi , Edoardo Milotti

We examine the space-time structure of the particle-emitting sources with fluctuating initial conditions in smoothed particle hydrodynamics. The two-pion correlation functions of single events for the sources exhibit event-by-event…

高能物理 - 唯象学 · 物理学 2008-08-18 Yan-Yu Ren , Wei-Ning Zhang , Jian-Li Liu

We investigate the influence of the vacuum fluctuations of a background electric field over a charged test particle in the presence of a perfectly reflecting flat wall. A switching function connecting different stages of the system is…

高能物理 - 理论 · 物理学 2016-11-30 V. A. De Lorenci , C. C. H. Ribeiro , M. M. Silva

It was recently proposed to use extra-galactic point sources to constrain space-time quantum fluctuations in the universe. In these proposals, the fundamental "fuzziness" of distance caused by space-time quantum fluctuations have been…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Yanbei Chen , Linqing Wen

We use the high sensitivity to magnetic flux of mesoscopic conductance fluctuations in large quantum dots to investigate changes in the two-dimensional electron dispersion caused by an in-plane magnetic field. In particular, changes in…

介观与纳米尺度物理 · 物理学 2009-11-10 D. M. Zumbuhl , J. B. Miller , C. M. Marcus , V. I. Fal'ko , T. Jungwirth , J. S. Harris

We will provide a review of some of the physics which can be addressed by studying fluctuations and correlations in heavy ion collisions. We will discuss Lattice QCD results on fluctuations and correlations and will put them into context…

核理论 · 物理学 2008-10-15 Volker Koch

The method of photon distribution function (PDF) is used to study fluctuations of light beams propagating through a turbulent atmosphere. Our analysis concerns the regime of saturated fluctuations. The focus is on the phenomena of beam…

量子物理 · 物理学 2022-06-07 V. L. Andriichuk , O. O. Chumak , L. A. Derzhypolska , I. V. Matsniev

For equilibrium systems, the magnitude of thermal fluctuations is closely linked to the dissipative response to external perturbations. This fluctuation-dissipation relation has been described for material particles in a wide range of…

量子气体 · 物理学 2023-01-24 Fahri Emre Öztürk , Frank Vewinger , Martin Weitz , Julian Schmitt

A distribution function approach is applied to describe the dynamics of the laser beam in the Earth atmosphere. Using a formal solution of the kinetic equation for the distribution function, we have developed an iterative scheme for…

量子物理 · 物理学 2016-03-23 Oleksandr O. Chumak , Roman A. Baskov

We derive analytically the spatial correlation functions for gap fluctuations in two-band scenario with intra- and interband pair-transfer interactions. These functions demonstrate the changes in spatial functionality due to the presence of…

超导电性 · 物理学 2012-09-21 Artjom Vargunin , Teet Örd

Quantum fluctuations can endow spacetime with a foamy structure. In this review article we discuss our various proposals to observationally constrain models of spacetime foam. One way is to examine if the light wave-front from a distant…

广义相对论与量子宇宙学 · 物理学 2022-07-12 Y. Jack Ng , Eric S. Perlman

We present a formalism for computing time-dependent fluctuations in the cosmological photoionizing radiation background, extending background fluctuations models beyond the steady-state approximation. We apply this formalism to estimate…

宇宙学与河外天体物理 · 物理学 2018-11-01 Avery Meiksin , Matthew McQuinn

Magnetic fluctuations with a zero mean field in a random flow with a finite correlation time and a small yet finite magnetic diffusion are studied. Equation for the second-order correlation function of a magnetic field is derived. This…

天体物理学 · 物理学 2009-11-07 N. Kleeorin , I. Rogachevskii , D. Sokoloff

Casimir physics covers a wealth of phenomena where forces between macroscopic objects are induced by long range fluctuations of either classical or quantum origin. Fluctuations of the quantum electrodynamic vacuum epitomize this type of…

介观与纳米尺度物理 · 物理学 2020-04-15 Ariane Soret , Karyn Le Hur , Eric Akkermans