During the inflationary phase of the early universe, quantum fluctuations in the vacuum generate particles as they stretch beyond the Hubble length. These fluctuations are thought to result in the density fluctuations and gravitational radiation that we can try to observe today. It is possible to calculate the quantum-mechanical evolution of these fluctuations during inflation and the subsequen...

the main purpose of this article is, showing similar fluctuation of temperature series and their consistency with what happened in the global level. in addition, it determines new estimates of regional seasonal and annual temperature trends over iran, after the detection of artificial and natural non homogenous points of 33 synoptic stations for the period of 1960 2010. the 22 stations with sho...

We investigate the motion of a colloidal particle driven out of equilibrium by a time-varying stiffness of the optical trap that produces persistent nonequilibrium work. Measurements of work production for repeated cycles composed of the compression and expansion processes for the optical potential show huge fluctuations due to thermal motion. Using a precise technique to modulate the stiffness...

The third-order optical response function of a chromophore coupled to a bath consisting of noninteracting two-level systems (TLSs) undergoing stochastic jumps is calculated. The results can be applied to a broad class of nonlinear optical techniques in single-molecule spectroscopy and bulk measurements in glasses, polymers, and mixed crystals. In the limit of many TLSs weakly coupled to the chr...

The correlation function of a financial index of the New York stock exchange, the S&P 500, is analyzed at 1min intervals over the 13-year period, Jan 84 – Dec 96. We quantify the correlations of the absolute values of the index increment. We find that these correlations can be described by two different power laws with a crossover time t× ≈ 600min. Detrended fluctuation analysis gives exponents...

Financial sector is an important thing for a country development. Indirectly, the financial will support economy especially during pandemic, including Islamic banking industry. This study aims to analyze performance of in Indonesia based on profitability ratios consisting BOPO, ROA, ROE, liquidity Cash ratio and FDR, as well solvency measured by CAR ratio, COVID-19 pandemic. research descriptiv...

The influence of the expansion corner on pressure fluctuation is an important subject in supersonic flow around high-speed vehicles. Past studies have clarified how alters root-mean-square fluctuating coefficient (Cprms) and power spectral density (PSD) without considering these properties are related to compressible waves. In this paper, we use characteristics determine direction wave propagat...

abstractinduced total pressure by flow, including mean and fluctuating components, around a selected chute block in saf stilling basins downstream of an ogee spillway was studied. several pressure holes were selected on various faces of a selected chute block to get enough information regarding the total pressure field. this paper reports the results of an experimental work and measurement of m...

The hydrogen absorption properties of CeMnGe, CeFeSi and CeCoX (X=Si and Ge) have been investigated. Neutron powder diffraction performed on deuteride CeCoGeD indicates that D-atoms are inserted in the pseudo-tetrahedral interstices [Ce4] of the tetragonal CeFeSi-type structure of this compound. Magnetization and electrical resistivity measurements reveal that the hydrogenation of: (i) CeCoSi a...