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When analyzing the perception of Hawking radiation by different observers, the Hawking effect becomes mixed with the Unruh effect. The separation of both effects is not always clear in the literature. Here we propose an inconsistency-free…

广义相对论与量子宇宙学 · 物理学 2016-11-29 Luis C. Barbado , Carlos Barceló , Luis J. Garay , Gil Jannes

The Unruh effect is a surprising prediction of quantum field theory that asserts accelerating observers perceive a thermal spectrum of particles with a temperature proportional to their acceleration. However, it has recently been shown that…

广义相对论与量子宇宙学 · 物理学 2020-09-02 Laura J. Henderson , Robie A. Hennigar , Robert B. Mann , Alexander R. H. Smith , Jialin Zhang

The Unruh effect is one of the first calculations of what one would see when transiting between an inertial reference frame with its quantum field vacuum state and a non-inertial (specifically, uniformly accelerating) reference frame. The…

广义相对论与量子宇宙学 · 物理学 2023-12-18 Satish Ramakrishna

We show that the Unruh effect can create net quantum entanglement between inertial and accelerated observers depending on the choice of the inertial state. This striking result banishes the extended belief that the Unruh effect can only…

量子物理 · 物理学 2012-05-22 M. Montero , E. Martin-Martinez

We construct a deformed algebraic quantum field theory on bifurcate Killing horizons in stationary axisymmetric spacetimes. The deformation is generated by the commuting actions of affine dilations along the null generators of the horizon…

高能物理 - 理论 · 物理学 2026-03-16 Philipp Dorau , Albert Much , Rainer Verch

This talk aims at questioning the vanishing of Unruh temperature for an inertial observer in Minkovski spacetime with finite lifetime, arguing that in the non eternal case the existence of a causal horizon is not linked to the non-vanishing…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Pierre Martinetti

We generalize the vacuum-Unruh effect to arbitrary excited states in the Fock space and find that the Unruh mode at the horizon induces coherent excitation on the canonical background ensemble measured by an accelerated observer. When there…

广义相对论与量子宇宙学 · 物理学 2023-03-29 Angela Chen

We estimate the transition rates of a uniformly accelerated Unruh-DeWitt detector coupled to a quantum field with reflecting conditions on a boundary plane (a "mirror"). We find that these are essentially indistinguishable from the usual…

广义相对论与量子宇宙学 · 物理学 2012-08-27 Carlo Rovelli , Matteo Smerlak

Entanglement degradation caused by the Unruh effect is discussed for the tripartite GHZ or W states constructed by modes of a non-interacting quantum field viewed by one inertial observer and two uniformly accelerated observers. For…

量子物理 · 物理学 2011-03-09 Mahmoud Shamirzai , Bahram Nasr Esfahani , Morteza Soltani

It has been thirty years since the discovery of the Unruh effect. It has played a crucial role in our understanding that the particle content of a field theory is observer dependent. This effect is important in its own right and as a way to…

广义相对论与量子宇宙学 · 物理学 2008-12-18 Luis C. B. Crispino , Atsushi Higuchi , George E. A. Matsas

We consider Unruh effect as an origin for Schwarzschild black hole entropy thus implying unitarian evolution of gravity. We simulate the black hole by set of Unruh horizons and estimate total entropy of the system. Dependence on mass and…

广义相对论与量子宇宙学 · 物理学 2019-03-25 M. v. Teslyk , O. M. Teslyk , L. V. Zadorozhna

We analyze a generalization of the analogue Unruh effect based on curved graphene. To this end, we consider the fourth order in derivatives field theoretic version of the Pais-Uhlenbeck oscillator, for which the Unruh effect may be…

高能物理 - 理论 · 物理学 2019-03-07 J. Madrigal-Melchor , Jairo Martínez--Montoya , Alberto Molgado , J. R. Suárez-López

This survey reviews the existing literature on the most relevant Bayesian inference methods for univariate and multivariate GARCH models. The advantages and drawbacks of each procedure are outlined as well as the advantages of the Bayesian…

统计理论 · 数学 2014-02-04 Audronė Virbickaitė , M. Concepción Ausín , Pedro Galeano

We present a general framework for Bayesian estimation of incompletely observed multivariate diffusion processes. Observations are assumed to be discrete in time, noisy and incomplete. We assume the drift and diffusion coefficient depend on…

统计方法学 · 统计学 2019-02-04 Frank van der Meulen , Moritz Schauer

This paper develops numerical and causal interpretations of two-way fixed effects (TWFE) regressions in settings with nonbinary, nonstaggered treatments and time-varying covariates. Using the equivalence between TWFE and pooled…

计量经济学 · 经济学 2026-03-24 Shoya Ishimaru

A uniformly accelerated charged particle feels the vacuum as thermally excited and fluctuates around the classical trajectory. Then we may expect additional radiation besides the Larmor radiation. It is called Unruh radiation. In this…

高能物理 - 唯象学 · 物理学 2011-02-24 Satoshi Iso , Yasuhiro Yamamoto , Sen Zhang

In observational studies, unmeasured confounders present a crucial challenge in accurately estimating desired causal effects. To calculate the hazard ratio (HR) in Cox proportional hazard models for time-to-event outcomes, two-stage…

We show that bifurcate Killing horizons with closed torsion form, in spacetimes of arbitrary dimension satisfying a Ricci-structure condition, arise from static Killing vectors. The result applies in particular to $\Lambda$-vacuum…

广义相对论与量子宇宙学 · 物理学 2023-09-28 Piotr T. Chruściel , Marc Mars

The Grouped Horseshoe distribution arises from hierarchical structures in the recent Bayesian methodological literature aimed at selection of groups of regression coefficients. We isolate this distribution and study its properties…

统计理论 · 数学 2024-07-17 Virginia X. He , Matt P. Wand

We analyse the emergence of the Unruh effect within the context of a field Lagrangian theory associated to the Pais-Uhlenbeck fourth order oscillator model. To this end, we introduce a transformation that brings the Hamiltonian bounded from…

广义相对论与量子宇宙学 · 物理学 2017-03-30 Jasel Berra-Montiel , Jairo Martínez-Montoya , Alberto Molgado
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