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There is an analogy between the propagation of fields on a curved spacetime and shallow water waves in an open channel flow. By placing a streamlined obstacle into an open channel flow we create a region of high velocity over the obstacle…

广义相对论与量子宇宙学 · 物理学 2015-06-12 Silke Weinfurtner , Edmund W. Tedford , Matthew C. J. Penrice , William G. Unruh , Gregory A. Lawrence

We propose that Hawking radiation-like phenomena may be observed in systems that show butterfly effects. Suppose that a classical dynamical system has a Lyapunov exponent $\lambda_L$, and is deterministic and non-thermal ($T=0$). We argue…

高能物理 - 理论 · 物理学 2021-01-08 Takeshi Morita

The Hawking radiation of Dirac particles in an arbitrarily rectilinearly accelerating Kinnersley black hole is studied by using a method of the generalized tortoise coordinate transformation. Both the location and the temperature of the…

广义相对论与量子宇宙学 · 物理学 2009-11-07 Wu Shuang-Qing , Cai Xu

We take into account the subcritical case for dielectric media by exploiting an approximation allowing us to perform perturbative analytical calculations and still not implying low dispersive effects. We show that in the background of a…

高能物理 - 理论 · 物理学 2023-07-19 Simone Trevisan , Francesco Belgiorno , Sergio Luigi Cacciatori

These notes introduce the fundamentals of black hole geometry, the thermality of the vacuum, and the Hawking effect, in spacetime and its analogues. Stimulated emission of Hawking radiation, the trans-Planckian question, short wavelength…

广义相对论与量子宇宙学 · 物理学 2015-06-12 Ted Jacobson

To identify what replaces the key notion of black hole horizon when working with theories which break Lorentz invariance at high energy, we study the modes responsible for the Hawking effect in the presence of high frequency dispersion. We…

广义相对论与量子宇宙学 · 物理学 2014-12-10 Antonin Coutant , Renaud Parentani

The Hawking-Unruh effect of thermal radiance from a black hole or observed by an accelerated detector is usually viewed as a geometric effect related to the existence of an event horizon. Here we propose a new viewpoint, that the detection…

广义相对论与量子宇宙学 · 物理学 2007-05-23 B. L. Hu

We analyze in this work some analogies between thermal emission of nano objects and Hawking's radiation. We first focus on the famous expression of the black hole radiating temperature derived by Hawking in 1974 and consider the case of…

经典物理 · 物理学 2018-08-27 Karl Joulain

Recent studies [J. Steinhauer, Nature Phys., $\textbf{10}$, 864 (2014); Phys. Rev. D $\textbf{92}$, 024043 (2015)] provide compelling evidences that Hawking radiation could be experimentally proven by using an analogue black hole. In this…

广义相对论与量子宇宙学 · 物理学 2016-09-20 I. Sakalli , A. Ovgun , K. Jusufi

We study, in the framework of open quantum systems, the dynamics of a radially polarizable two-level atom in multi-polar coupling to fluctuating vacuum electromagnetic fields which is placed at a fixed radial distance outside a radiating…

广义相对论与量子宇宙学 · 物理学 2013-10-30 Jiawei Hu , Wenting Zhou , Hongwei Yu

We study the Hawking radiation of the spherically symmetric, asymptotically flat black holes in the infrared modified Horava-Lifshitz gravity by applying the methods of covariant anomaly cancellation and effective action, as well as the…

高能物理 - 理论 · 物理学 2010-03-26 Jun-Jin Peng , Shuang-Qing Wu

We consider one model of a black hole radiation, in which the equation of motion of a matter field is modified to cut off high frequency modes. The spectrum in the model has already been analytically derived in low frequency range, which…

广义相对论与量子宇宙学 · 物理学 2009-10-31 H. Saida , M. Sakagami

Hawking's radiation effect of Klein-Gordon scalar field, Dirac particles and Maxwell's electromagnetic field in the non-stationary rotating de Sitter cosmological space-time is investigated by using a method of generalized tortoise…

广义相对论与量子宇宙学 · 物理学 2011-04-28 Ng. Ibohal , T. Ibungochouba

In this paper we generalize the Parikh-Wilczek scheme to a holographic screen in the framework of the ultraviolet self-complete quantum gravity. We calculate that the tunneling probabilities of the massless and massive particles depend on…

广义相对论与量子宇宙学 · 物理学 2017-11-22 Ying-Jie Zhao

Hawking radiation, the spontaneous emission of thermal photons from an event horizon, is one of the most intriguing and elusive predictions of field theory in curved spacetimes. A formally analogue phenomenon occurs at the supersonic…

量子气体 · 物理学 2017-12-06 A. Parola , M. Tettamanti , S. L. Cacciatori

A white hole (WH) is a time-reversed black hole (BH) solution in General relativity with a spacetime region to which cannot be entered from the outside. Recently they have been proposed as a possible solution to the information loss problem…

广义相对论与量子宇宙学 · 物理学 2018-06-22 Kimet Jusufi

We consider a sonic analog of a black hole realized in the one-dimensional flow of a Bose-Einstein condensate. Our theoretical analysis demonstrates that one- and two-body momentum distributions accessible by present-day experimental…

量子气体 · 物理学 2015-07-09 D. Boiron , A. Fabbri , P. -É. Larré , N. Pavloff , C. I. Westbrook , P. Ziń

Gravity and gauge theory are concretely linked by the double copy. Although well-studied at the level of perturbative scattering in vacuum, far less is known about non-perturbative aspects or extensions of the double copy beyond trivial…

高能物理 - 理论 · 物理学 2026-03-03 Anton Ilderton , William Lindved , Karthik Rajeev

We present a method for computing the spectrum of black hole radiation of a scalar field satisfying a wave equation with high frequency dispersion. The method involves a combination of Laplace transform and WKB techniques for finding…

高能物理 - 理论 · 物理学 2008-11-26 Steven Corley

Acoustic holes are the hydrodynamic analogue of standard black holes. Featuring an acoustic horizon, these systems spontaneously emit phonons at the Hawking temperature. We derive the Hawking temperature of the acoustic horizon by fully…

广义相对论与量子宇宙学 · 物理学 2021-05-21 Massimo Mannarelli , Dario Grasso , Silvia Trabucco , Maria Luisa Chiofalo