ON ARTIFICIAL BLACK HOLES

2007 ◽  
Vol 16 (12b) ◽  
pp. 2541-2550 ◽  
Author(s):  
ULF LEONHARDT ◽  
THOMAS G. PHILBIN
Keyword(s):  
Black Holes ◽  
Analog Model ◽  
Hawking Effect ◽  
Quantum Radiation ◽  
Simple Analog

We explain some of the main motivations for creating laboratory analogs of horizons (artificial black holes). We present a concise derivation of the Hawking effect, the quantum radiation of black holes, using a simple analog model.

Frontiers of Quantum Black Holes

2020 ◽  
Vol 29 (11) ◽  
pp. 10-16
Author(s):  
Wontae KIM ◽  
Mu-In PARK
Keyword(s):  
Black Holes ◽  
General Relativity ◽  
Black Hole ◽  
Direct Detection ◽  
Occupation Number ◽  
Theory Of Relativity ◽  
General Theory Of Relativity ◽  
Quantum Radiation ◽  
Points Of View ◽  
Massless Quantum

A black hole is a theoretical prediction of Einstein’s general theory of relativity, differently from Newtonian gravity, which is a non-relativistic gravity. In recent few years, its direct detection via gravitational waves and other multi-messenger observations have made it possible to test the prediction and hence its associated general relativity. From purely theoretical points of view, general relativity cannot be a complete description due to its not being compatible with quantum mechanics, which is a successful description of microscopic objects. In this article, we introduce the conceptional development of quantum-gravity theories and give brief sketches of fundamental problems in quantum black holes. As an interesting model of quantum black holes, we consider a collapsing shell of matter to form a Hayward black hole and investigate semiclassically quantum radiation from the shell. By using the Israel’s formulation and the functional Schrödinger formulation for massless quantum radiation, we find that the Hawking temperature can be deduced from the occupation number of excited states when the shell approaches its own horizon.

scholarly journals Amplifying the Hawking Signal in BECs

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Roberto Balbinot ◽  
Alessandro Fabbri
Keyword(s):  
Black Holes ◽  
Casimir Effect ◽  
Pair Creation ◽  
Time Dependent ◽  
Dynamical Casimir Effect ◽  
Hawking Effect ◽  
Acoustic Black Holes ◽  
Bose Einstein ◽  
Simple Models

We consider simple models of Bose-Einstein condensates to study analog pair-creation effects, namely, the Hawking effect from acoustic black holes and the dynamical Casimir effect in rapidly time-dependent backgrounds. We also focus on a proposal by Cornell to amplify the Hawking signal in density-density correlators by reducing the atoms’ interactions shortly before measurements are made.

scholarly journals Evaporation of black hole under the effect of quantum gravity

2021 ◽  
Author(s):  
Riasat Ali ◽  
Rimsha Babar ◽  
Muhammad Asgher ◽  
Syed Asif Ali Shah
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Quantum Gravity ◽  
Generalized Uncertainty Principle ◽  
Hawking Temperature ◽  
Charged Black Hole ◽  
Global Monopole ◽  
De Sitter ◽  
Quantum Radiation ◽  
Charged Boson

This paper provides an extension for Hawking temperature of Reissner–Nordström-de Sitter (RN-DS) black hole (BH) with global monopole as well as [Formula: see text]D charged black hole. We consider the black holes metric and investigate the effects of quantum gravity ([Formula: see text]) on Hawking radiation. We investigate the charged boson particles tunneling through the horizon of black holes by using the Hamilton–Jacobi ansatz phenomenon. In our investigation, we study the quantum radiation to analyze the Lagrangian wave equation with generalized uncertainty principle and calculate the modified Hawking temperatures for black holes. Furthermore, we analyze the charge and correction parameter effects on the modified Hawking temperature and examine the stable and unstable condition of RN-DS BH with global monopole as well as [Formula: see text]D charged black hole.

scholarly journals Dielectric black holes induced by a refractive index perturbation and the Hawking effect

2011 ◽  
Vol 83 (2) ◽  
Author(s):  
F. Belgiorno ◽  
S. L. Cacciatori ◽  
G. Ortenzi ◽  
L. Rizzi ◽  
V. Gorini ◽  
...  
Keyword(s):  
Black Holes ◽  
Refractive Index ◽  
Hawking Effect

scholarly journals Quantum radiation of general nonstationary black holes

2009 ◽  
Vol 85 (3) ◽  
pp. 30007 ◽  
Author(s):  
Jia-Chen Hua ◽  
Yong-Chang Huang
Keyword(s):  
Black Holes ◽  
Quantum Radiation

Quantum particle creation (Hawking effect) in nonstationary black holes

1976 ◽  
Vol 29 (2) ◽  
pp. 1012-1021 ◽  
Author(s):  
I. V. Volovich ◽  
V. A. Zagrebnov ◽  
V. P. Frolov
Keyword(s):  
Black Holes ◽  
Quantum Particle ◽  
Particle Creation ◽  
Hawking Effect

Hawking effect of some axially symmetric non-stationary black holes

1994 ◽  
Vol 109 (5) ◽  
pp. 483-491 ◽  
Author(s):  
Zhao Zheng ◽  
Luo Zhi-qiang ◽  
Dai Xian-xin
Keyword(s):  
Black Holes ◽  
Axially Symmetric ◽  
Hawking Effect

Application of the Resistance-Capacitance Heat-Flow Analog to Soil Systems

1968 ◽  
Vol 5 (4) ◽  
pp. 181-191
Author(s):  
Roger J Pedersen ◽  
Hilbert Schenck, Jr.
Keyword(s):  
Heat Transfer ◽  
Soil Mass ◽  
Two Dimensional ◽  
Analog Model ◽  
Solution Maps ◽  
Soil Systems ◽  
Scale Factors ◽  
Sinusoidal Surface ◽  
Local Anomalies ◽  
Simple Analog

An electrical analog of two-dimensional heat transfer systems, easily constructed of small resistors and capacitors, has many uses in the shady of heat transfer in soils. Scale factors are established and a 146-node model is applied to the design of a pit to be used for inserting thermistor probes laterally into a soil mass. The model is also used to obtain general solution maps to other soil systems with results displayed on generalized graphs of equivalent depths. This graphical approach, explained herein, is useful for illustrating the effect of local anomalies in two-dimensional soil systems having sinusoidal surface temperatures. Limitations of this simple analog model are discussed.

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