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The electron drift in germanium detectors is modeled making many assumptions. Confronted with data, these assumptions have to be revisited. The temperature dependence of the drift of electrons was studied in detail for an n-type segmented…

We revisit the problem of the decoherence and relaxation of a central spin coupled to a bath of conduction electrons. We consider both metallic and semiconducting baths to study the effect of a gap in the bath density of states (DOS) on the…

Mesoscale and Nanoscale Physics · Physics 2013-04-16 Juliana Restrepo , R. Chitra , S. Camalet , Emilie Dupont

Weakly magnetized shock waves are paramount to a large diversity of environments, including supernova remnants, blazars, and binary-neutron-star mergers. Understanding the distribution of energy between electrons and ions within these…

High Energy Astrophysical Phenomena · Physics 2024-10-22 Arno Vanthieghem , Vasileios Tsiolis , Frederico Fiuza , Kazuhiro Sekiguchi , Anatoly Spitkovsky , Yasushi Todo

We study the response of an accelerated Unruh-DeWitt detector to a one-parameter family of ``kappa Rindler'' vacua, which generalize the standard Unruh effect. These states, parameterized by $\kappa$, continuously interpolate between the…

High Energy Physics - Theory · Physics 2025-09-09 Arash Azizi

Dissipative effects during neutrino decoupling in the early universe create a small backreaction on the Hubble rate, and lead to a small rise in temperature and entropy. We use a simplified thermo-hydrodynamic model, which provides a causal…

Astrophysics · Physics 2015-06-24 Roy Maartens , Josep Triginer

The behavior of the electron dephasing time near zero temperature, $\tau_\phi^0$, has recently attracted vigorous attention. This renewed interest is primarily concerned with whether $\tau_\phi^0$ should reach a finite or an infinite value…

Mesoscale and Nanoscale Physics · Physics 2012-08-17 J. J. Lin , T. J. Li , Y. L. Zhong

Utilizing quantum coherence monotone, we reexamine the thermal nature of the Unruh effect of an accelerating detector. We consider an UDW detector coupling to a n-dimensional conformal field in Minkowski spacetime, whose response spectrum…

High Energy Physics - Theory · Physics 2022-05-20 Jun Feng , Jing-Jun Zhang , Yihao Zhou

Electron and ion energization (i.e., heating and nonthermal acceleration) is a fundamental, but poorly understood, outcome of plasma turbulence. In this work, we present new results on this topic from particle-in-cell simulations of driven…

High Energy Astrophysical Phenomena · Physics 2019-02-13 Vladimir Zhdankin , Dmitri A. Uzdensky , Gregory R. Werner , Mitchell C. Begelman

We study Unruh phenomena for a qudit detector coupled to a quantized scalar field, comparing its response to that of a standard qubit-based Unruh-DeWitt detector. We show that there are limitations to the utility of the detailed balance…

Quantum Physics · Physics 2024-02-14 Caroline Lima , Everett Patterson , Erickson Tjoa , Robert B. Mann

In the past 50 years, calorimeters have become the most important detectors in many particle physics experiments, especially experiments in colliding-beam accelerators at the energy frontier. In this paper, we describe and discuss a number…

Instrumentation and Detectors · Physics 2017-04-04 Michele Livan , Richard Wigmans

A very preliminary study for a trigger for the PEP-N experiment is presented. Its aim is to show the feasibility of a very efficient trigger for multihadronic events based on energy releases in the electromagnetic calorimeter. Though the…

High Energy Physics - Experiment · Physics 2007-05-23 E. Pasqualucci

We investigate whether state-of-the-art classification features commonly used to distinguish electrons from jet backgrounds in collider experiments are overlooking valuable information. A deep convolutional neural network analysis of…

Data Analysis, Statistics and Probability · Physics 2021-07-07 Julian Collado , Jessica N. Howard , Taylor Faucett , Tony Tong , Pierre Baldi , Daniel Whiteson

In this letter, we derive the Hawking temperature in the tunneling method by considering the system is open to the environment. This consideration yields the temperature which is higher than the standard one. The correction of temperatures…

General Relativity and Quantum Cosmology · Physics 2009-04-27 Haryanto M. Siahaan

Recently J.S. Hoye, I.Brevik, J.B. Aarseth, and K.A. Milton [Phys. Rev. E v.67, 056116 (2003); quant-ph/0212125] proposed that if the Lifshitz formula is combined with the Drude model, the transverse electric zero mode does not contribute…

Quantum Physics · Physics 2007-05-23 V. B. Bezerra , G. L. Klimchitskaya , V. M. Mostepanenko

(abridged) We have studied the effects of electron-ion non-equipartition in the outer regions of relaxed clusters for a wide range of masses in the \LambdaCDM cosmology using one-dimensional hydrodynamic simulations. The effects of the…

Cosmology and Nongalactic Astrophysics · Physics 2010-10-14 Ka-Wah Wong , Craig L. Sarazin

We investigate the dynamics of a small long-range interacting system, in contact with a large long-range thermal bath. Our analysis reveals the existence of striking anomalies in the energy flux between the bath and the system. In…

Extending previous studies of nonthermal electron transport in solar flares which include the effects of collisional energy diffusion and thermalization of fast electrons, we present an analytic method to infer more accurate estimates of…

Solar and Stellar Astrophysics · Physics 2015-08-19 E. P. Kontar , N. L. S. Jeffrey , A. G. Emslie , N. H. Bian

Leading finite temperature effects on the neutrino decoupling temperature in the early Universe have been studied. We have incorporated modifications of the dispersion relation and the phase space distribution due to the presence of…

High Energy Physics - Phenomenology · Physics 2009-10-30 N. Fornengo , C. W. Kim , J. Song

A model detector undergoing constant, infinite-duration acceleration converges to an equilibrium state described by the Hawking-Unruh temperature $T_a=(a/2\pi)(\hbar/c)$. To relate this prediction to experimental observables, a point-like…

High Energy Physics - Phenomenology · Physics 2022-06-08 B. M. Hegelich , L. Labun , O. Z. Labun , G. Torrieri , H. Truran

Heating of charged particles via collisionless shocks, while ubiquitous in the universe, is an intriguing yet puzzling plasma phenomenon. One outstanding question is how electrons and ions approach an equilibrium after they were heated to…

High Energy Astrophysical Phenomena · Physics 2024-05-16 Masahiro Ichihashi , Aya Bamba , Yuichi Kato , Satoru Katsuda , Hiromasa Suzuki , Tomoaki Kasuga , Hirokazu Odaka , Kazuhiro Nakazawa