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We derive spectral fluctuation--dissipation--response inequalities for finite-state Markov jump processes. By comparing the causal susceptibility to its passive equilibrium reference, we establish frequency-resolved and frequency-integrated…

统计力学 · 物理学 2026-04-23 Jie Gu

It was shown by a study of the incoherent part of the low-frequency resonance fluorescence spectrum of the polar quantum emitter driven by semiclassical external laser field and damped by non-squeezed vacuum reservoir that the emitted…

量子物理 · 物理学 2021-12-23 Andrey V. Soldatov

A full understanding of transport in dense, interacting suspensions requires analysis frameworks sensitive to self and collective dynamics across all relevant spatial and temporal scales. Here we introduce a trajectory-free approach to…

软凝聚态物质 · 物理学 2025-12-22 Eleanor K. R. Mackay , Anna Drummond Young , Adam Carter , Sophie Marbach , Alice L. Thorneywork

The possibility of thermal and quantum fluctuations induced attractive interaction leading to a pairing gap \Delta_tq in the single-particle spectrum of d-p model in the limit of a large N of fermion flavor is investigated analytically.…

超导电性 · 物理学 2009-11-13 Partha Goswami

The mirror relative motion of a suspended Fabry-Perot cavity is studied in the frequency range 3-10 Hz. The experimental measurements presented in this paper, have been performed at the Low Frequency Facility, a high finesse optical cavity…

The anomalous Hall effect in a multiband tight-binding model is numerically studied taking into account both elastic scattering by disorder and inelastic scattering by the electron-phonon interaction. The Hall conductivity is obtained as a…

强关联电子 · 物理学 2012-07-19 Atsuo Shitade , Naoto Nagaosa

Pseudogap is a ubiquitous phenomenon in strongly correlated systems such as high-$T_{\rm c}$ superconductors, ultracold atoms and nuclear physics. While pairing fluctuations inducing the pseudogap are known to be enhanced in low-dimensional…

量子气体 · 物理学 2020-09-23 Hiroyuki Tajima , Shoichiro Tsutsui , Takahiro M. Doi

We calculate suppression of inter- and intralayer superconducting currents due to equilibrium phase fluctuations and find that, in contrast to a recent prediction, the effect of thermal fluctuations cannot account for linear temperature…

超导电性 · 物理学 2009-10-31 S. N. Artemenko , S. V. Remizov

Cold-atom experiments which measure Fermi-gas properties near unitarity confine fermionic atoms to a region of space using trapping potentials of various shapes. The presence of a trapping potential introduces a new characteristic physical…

量子气体 · 物理学 2026-05-29 Silas R. Beane , Adèle Le Borgne , Domenico Orlando , Susanne Reffert

We study the effects of random fluctuations on quantum phase transitions by the energy gap analysis. For the infinite-ranged spin-glass models with a transverse field, we find that a strong sample-to-sample fluctuation effect leads to broad…

无序系统与神经网络 · 物理学 2010-04-13 Kazutaka Takahashi , Yoshiki Matsuda

We analyze the rates of noise-induced transitions between period-two attractors. The model investigated is an underdamped oscillator parametrically driven by a field at nearly twice the oscillator eigenfrequency. The activation energy of…

光学 · 物理学 2016-09-08 M. I. Dykman , C. M. Maloney , V. N. Smelyanskiy , M. Silverstein

We study the small-scale asymptotic behaviour of the cosmic density-fluctuation power spectrum in the Zel'dovich approximation. For doing so, we extend Laplace's method in arbitrary dimensions and use it to prove that this power spectrum…

宇宙学与河外天体物理 · 物理学 2023-05-08 Sara Konrad , Matthias Bartelmann

We examine the effects of thermal fluctuations on thin elastic filaments with non-circular cross-section and arbitrary spontaneous curvature and torsion. Analytical expressions for orientational correlation functions and for the persistence…

软凝聚态物质 · 物理学 2009-10-31 S. Panyukov , Y. Rabin

This paper analyzes how power injections affect frequency quality in power systems. We first derive a general expression linking active and reactive power injections at buses to the system's frequency. This formulation explicitly considers…

系统与控制 · 电气工程与系统科学 2025-05-20 Angel Vaca , Federico Milano

We study the role of charge density-wave fluctuations on the temperature dependence of Seebeck coefficient in quasi-one dimensional conductors with a Peierls instability. The description of low-dimensional incommensurate charge density-wave…

强关联电子 · 物理学 2020-03-25 M. Mbodji , C. Bourbonnais

A recently developed Shastry's formalism for energy transport is used to analyze the temporal and spatial behaviors of the energy and heat transport in metals under delta function excitation at the surface. Comparison with Cattaneo's model…

介观与纳米尺度物理 · 物理学 2010-10-14 Younes Ezzahri , Karl Joulain , Ali Shakouri

Using ordinary Fourier analysis, the asymptotic decay behavior of the density matrix F(r,r') is derived for the case of a metal at a finite electronic temperature. An oscillatory behavior which is damped exponentially with increasing…

凝聚态物理 · 物理学 2009-10-31 S. Goedecker

In many physical situations the behavior of a quantum system is affected by interaction with a larger environment. We develop, using the method of influence functional, how to deduce the density matrix of the quantum system incorporating…

高能物理 - 唯象学 · 物理学 2009-10-28 M. Hotta , I. Joichi , Sh. Matsumoto , M. Yoshimura

It is shown that in many-electron systems quantum transfer amplitudes and thus transfer probabilities may be strongly influenced by fast fluctuating fields, in particular, caused by simultaneous electron transfers. Corresponding mutual…

统计力学 · 物理学 2007-05-23 Yu. E. Kuzovlev

We present results of the numerical simulations and the scaling characteristics of one-dimensional random fluctuations with heavy tailed probability distribution functions. Assuming that the distribution function of the random fluctuations…

统计力学 · 物理学 2017-08-16 Mohsen Ghasemi Nezhadhaghighi