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We investigate the thermal emission from magnetic neutron star surfaces in which the cohesive effects of the magnetic field have produced the condensation of the atmosphere and the external layers. This may happen for sufficiently cool…

Astrophysics · Physics 2015-06-24 J. F. Perez--Azorin , J. A. Miralles , J. A. Pons

This article aims to investigate the impact of noise on parameter fitting for an Ornstein-Uhlenbeck process, focusing on the effects of multiplicative and thermal noise on the accuracy of signal separation. To address these issues, we…

Machine Learning · Statistics 2024-07-11 Simon Carter , Lilianne Mujica-Parodi , Helmut H. Strey

We propose an alternative scenario for the propagation of thermal noise in a conductor. In this scenario, the noise in the emf (electromotive force) between two terminals cannot be described as a sum of contributions from uncorrelated…

Statistical Mechanics · Physics 2025-12-12 Jorge Berger , Guy Katriel

We study the thermoelectric conductivities of a strongly correlated system in the presence of a magnetic field by the gauge/gravity duality. We consider a class of Einstein-Maxwell-Dilaton theories with axion fields imposing momentum…

High Energy Physics - Theory · Physics 2015-08-25 Keun-Young Kim , Kyung Kiu Kim , Yunseok Seo , Sang-Jin Sin

We present a novel open-source Python software package, bfieldtools, for magneto-quasistatic calculations with current densities on surfaces of arbitrary shape. The core functionality of the software relies on a stream-function…

Resistive transport near a superconducting phase can arise from the motion of normal-state quasiparticles or that of vortices. The conductivity alone does not distinguish between these mechanisms. We propose an unambiguous method for…

Superconductivity · Physics 2026-05-20 Yifan F. Zhang , Rhine Samajdar , Sarang Gopalakrishnan

The study of charge current fluctuations (noise) can give useful insights into the properties of nanoscale systems. In this work, the peculiar properties of noise in multiterminal hybrid normal-superconducting systems are explored in the…

Mesoscale and Nanoscale Physics · Physics 2025-07-02 Leonardo Pierattelli , Fabio Taddei , Alessandro Braggio

There has been significant interest recently in using complex quantum systems to create effective nonreciprocal dynamics. Proposals have been put forward for the realization of artificial magnetic fields for photons and phonons;…

Quantum Physics · Physics 2018-02-08 Shabir Barzanjeh , Matteo Aquilina , André Xuereb

Very recently, it has been shown that thermal noise and its artificial versions (Johnson-like noises) can be utilized as an information carrier with peculiar properties therefore it may be proper to call this topic Thermal Noise…

General Physics · Physics 2009-11-13 Laszlo B. Kish , Robert Mingesz , Zoltan gingl

Nowadays, micromagnetic simulations are a common tool for studying a wide range of different magnetic phenomena, including the ferromagnetic resonance. A technique for evaluating reliability and validity of different micromagnetic…

We present measurements of the dynamical response of thermal noise to an ac excitation in conductors at low temperature. From the frequency dependence of this response function - the noise thermal impedance - in the range 1 kHz-1 GHz we…

Mesoscale and Nanoscale Physics · Physics 2016-06-16 Edouard Pinsolle , Alexandre Rousseau , Christian Lupien , Bertrand Reulet

We achieved for the first time a direct measurement of the thermal fluctuation of a pendulum in an off-resonant region using a laser interferometric gravitational wave detector. These measurements have been well identified for over one…

Thermal noise of a mirror is one of the most important issues in high precision measurements such as gravitational-wave detection or cold damping experiments. It has been pointed out that thermal noise of a mirror with multi-layer coatings…

Quantum Physics · Physics 2011-01-31 Kentaro Somiya

We present a method to numerically add thermal noise to the equations of motion for a circuit of Josephson junctions. A new noise term, which we call "linearly interpolated Gaussian noise," replaces the usual white noise process. It…

Superconductivity · Physics 2016-10-19 Kenneth Segall , Dan Schult , Ushnish Ray , Toshiro Ohsumi

We calculate the thermal noise in half-infinite mirrors containing a layer of arbitrary thickness and depth made of excessively lossy material but with the same elastic material properties as the substrate. For the special case of a thin…

General Relativity and Quantum Cosmology · Physics 2014-11-17 N. Nakagawa , A. M. Gretarsson , E. K. Gustafson , M. M. Fejer

Magnetic flux leakage measurements help identify the position, size and shape of corrosion-related defects in steel casings used to protect boreholes drilled into oil and gas reservoirs. Images constructed from magnetic flux leakage data…

Data Analysis, Statistics and Probability · Physics 2015-11-10 Anastasiya V. Pimenova , Denis S. Goldobin , Jeremy Levesley , Peter Elkington , Mark Bacciarelli

Coated conductors with magnetic substrates are thin multilayer structures; their high aspect ratio and nonlinear material properties present significant difficulties for numerical simulation. Using the high width-to-thickness ratio of…

Superconductivity · Physics 2023-05-03 Leonid Prigozhin , Vladimir Sokolovsky

We develop a high frequency, wide bandwidth radiometer operating at room temperature, which augments the traditional technique of Johnson noise thermometry for nanoscale thermal transport studies. Employing low noise amplifiers and an…

Mesoscale and Nanoscale Physics · Physics 2016-03-15 Jesse Crossno , Xiaomeng Liu , Thomas A. Ohki , Philip Kim , Kin Chung Fong

Rotating magnetic field is an efficient method of actuation of synthetic colloids in liquids. In this Letter we theoretically study the effect of the thermal noise on torque-driven steering of magnetic nanohelices. Using a combination of…

Soft Condensed Matter · Physics 2025-12-02 Ashwani Kr. Tripathi , Konstantin I. Morozov , Boris Y. Rubinstein , Alexander M. Leshansky

Experimental observation of highly reduced thermal conductivity in surface-roughness dominated silicon nanowires have generated renewed interest in low-dimensional thermoelectric devices. Using a previous work where the scattering of…

Mesoscale and Nanoscale Physics · Physics 2019-06-18 S. Abhinav , K. A. Muttalib
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