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The Wave Function of a Godless Universe

Quentin Smith

in Theism, Atheism, and Big Bang Cosmology

Published in print:
1995
Published Online:
October 2011
ISBN:
9780198263838
eISBN:
9780191682650
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198263838.003.0012
Subject:
Religion, Philosophy of Religion, Theology

This chapter discusses the wave function of a Godless universe. It analyses the concept of nothingness, the interpretation of quantum cosmology, and Stephen Hawking's quasi-instrumentalist ... More


Imaginary time

George Jaroszkiewicz

in Images of Time: Mind, Science, Reality

Published in print:
2016
Published Online:
January 2016
ISBN:
9780198718062
eISBN:
9780191787553
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198718062.003.0021
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter discusses the role of imaginary time in physics. It emphasizes the difference between imaginary (or complex path) time and complex time. Starting with Minkowski’s famous 1908 lecture, ... More


Thermodynamic Green’s Functions and Spectral Structure

Norman J. Morgenstern Horing

in Quantum Statistical Field Theory: An Introduction to Schwinger's Variational Method with Green's Function Nanoapplications, Graphene and Superconductivity

Published in print:
2017
Published Online:
January 2018
ISBN:
9780198791942
eISBN:
9780191834165
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198791942.003.0007
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Multiparticle thermodynamic Green’s functions, defined in terms of grand canonical ensemble averages of time-ordered products of creation and annihilation operators, are interpreted as tracing the ... More


Statistical field theory

Tom Lancaster and Stephen J. Blundell

in Quantum Field Theory for the Gifted Amateur

Published in print:
2014
Published Online:
June 2014
ISBN:
9780199699322
eISBN:
9780191779435
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199699322.003.0026
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

There is a rather subtle connection between quantum field theory and statistical physics, and this is explored here, where the concepts of imaginary time and the Wick rotation are introduced.


Mathematical images of time

George Jaroszkiewicz

in Images of Time: Mind, Science, Reality

Published in print:
2016
Published Online:
January 2016
ISBN:
9780198718062
eISBN:
9780191787553
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198718062.003.0007
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter discusses the mathematics underpinning various models of time, starting with a review of the requirements that any reasonable model of time should satisfy. This is followed by a detailed ... More


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