Calculational details of Hawking radiation

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Discussion Overview

The discussion revolves around the calculational details of Hawking radiation, specifically focusing on the original calculations presented in Stephen Hawking's papers. Participants seek resources and clarification on the mathematical aspects of the topic, including the Klein-Gordon equation in Schwarzschild geometry and complex algebra calculations involved in Hawking's work.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant requests help with the original calculations of Hawking radiation and expresses difficulty in understanding certain aspects.
  • Another participant suggests Townsend's lectures as a resource, specifically pointing to Chapter 7, while recommending prior sections based on the inquirer's knowledge level.
  • Further resources are proposed, including "Introduction to Quantum Effects in Gravity" by Mukhanov and Winitzki and "Quantum Field Theory in Curved Spacetime" by Parker and Toms, with the former described as a more accessible introduction.
  • A participant clarifies their interest in detailed calculations and poses specific questions regarding the solutions to the Klein-Gordon equation in Schwarzschild geometry, questioning the completeness of outgoing and ingoing solutions.
  • The same participant seeks guidance on complex algebra calculations used in Hawking's paper, specifically regarding branch cuts and integration techniques.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the specific details of the calculations or the completeness of the solutions to the Klein-Gordon equation, indicating that multiple views and uncertainties remain in the discussion.

Contextual Notes

The discussion highlights limitations in the participants' understanding of the mathematical details, particularly concerning the application of the Klein-Gordon equation and the handling of complex algebra in the context of Hawking radiation.

mritunjay
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Can anybody help me with the original calculations of hawking radiation. I am working out the details of Hawking's original paper on black hole radiation. I am getting stuck at many places. Does anyone know about some place where the detailed calculations can be found.
 
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I'm not sure what kind of detail you are looking for, but the topic is for example covered in Townsend's lectures: http://arxiv.org/PS_cache/gr-qc/pdf/9707/9707012v1.pdf . Chapter 7 deals with Hawking radiation, but depending on your level of knowledge I'd recommend reading the previous sections as well.
 
Polyrhythmic said:
I'm not sure what kind of detail you are looking for

Also, are you looking specifically for the details of the calculations in Hawking's papers, or exposition of Hawking radiation in general? Depending on what you're looking for, another possibility is the first reference that I give in
George Jones said:
To this standard, I'll add

Introduction to Quantum Effects in Gravity by Mukhanov and and Winitzki (2009)
https://www.amazon.com/dp/0521868343/?tag=pfamazon01-20

Quantum Field Theory in Curved Spacetime by Parker and Toms.
https://www.amazon.com/dp/0521877873/?tag=pfamazon01-20

Mukhanov and Winitzki is meant as an "easy", pedagogical, and short introduction.
 
George Jones said:
Also, are you looking specifically for the details of the calculations in Hawking's papers, or exposition of Hawking radiation in general? Depending on what you're looking for, another possibility is the first reference that I give in

Thank you Polyrhythmic and George Jones for the reply and references,

I am looking for detailed calculations. I have some specific questions.

1. when we solve Klein-Gorden equation in Schwarzschild geometry, near scri+ and scri- we get both solutions outgoing and ingoing. how is it that only outgoing forms a complete set of solution near scri+ and ingoing near scri-. What I think is both ingoing as well as outgoing modes should together form a complete set.

2. Can you suggest some place where the complex algebra calculation used in Hawking's paper is done. I want to clearly understand where to put branch cut and how to do the integration.
 

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