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Path Integrals in Quantum Mechanics

Jean Zinn-Justin

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198566748
eISBN:
9780191717994
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198566748.001.0001
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

Path integrals are mathematical objects that can be considered as generalizations to an infinite number of variables, represented by paths, of usual integrals. They share the algebraic properties of ... More


Nuclear fusion reactions

Stefano Atzeni and JÜrgen Meyer-Ter-Vehn

in The Physics of Inertial Fusion: BeamPlasma Interaction, Hydrodynamics, Hot Dense Matter

Published in print:
2004
Published Online:
January 2008
ISBN:
9780198562641
eISBN:
9780191714030
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198562641.003.0001
Subject:
Physics, Nuclear and Plasma Physics

This chapter discusses nuclear fusion reactions. The concepts of reaction cross-section and of Maxwell-averaged reactivity are defined, and the standard parametrization of these two important ... More


Austen’s Intentions

Michael Suk-Young Chwe

in Jane Austen, Game Theorist

Published in print:
2014
Published Online:
October 2017
ISBN:
9780691162447
eISBN:
9781400851331
Item type:
chapter
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691162447.003.0011
Subject:
Political Science, Political Theory

This chapter examines whether Jane Austen intends to impart game theory in her novels. If Austen has no intention of making strategic thinking a central theoretical concern, one would have to explain ... More


Colonel Vivian's Briefing, 1943

Nige West and Oleg Tsarev

in TRIPLEX: Secrets from the Cambridge Spies

Published in print:
2009
Published Online:
October 2013
ISBN:
9780300123470
eISBN:
9780300156416
Item type:
chapter
Publisher:
Yale University Press
DOI:
10.12987/yale/9780300123470.003.0007
Subject:
History, British and Irish Modern History

This chapter focuses on a report from SÖNCHEN, dated 10 May 1943, describing a briefing given to SIS's Section V on 6 March 1943 by Colonel Valentine Vivian, on the subject of Communist penetration ... More


Members and Interests

Robert J. Bennett

in Local Business Voice: The History of Chambers of Commerce in Britain, Ireland, and Revolutionary America, 1760-2011

Published in print:
2011
Published Online:
January 2012
ISBN:
9780199584734
eISBN:
9780191731105
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199584734.003.0014
Subject:
Business and Management, Business History

The membership is assessed in detail for the earliest chambers in terms of their geographical reach, sector structure, balance of company structures, trading markets, overlap with other networks, and ... More


BARRIER PENETRATION: SEMI-CLASSICAL APPROXIMATION

Jean Zinn-Justin

in Path Integrals in Quantum Mechanics

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198566748
eISBN:
9780191717994
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198566748.003.0008
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

A classical particle is always reflected by a potential barrier if its energy is lower than the potential. In contrast, a quantum particle has a non-vanishing probability to tunnel through a barrier, ... More


Quasiclassical Method for Layered Superconductors

Nikolai B. Kopnin

in Theory of Nonequilibrium Superconductivity

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198507888
eISBN:
9780191709722
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198507888.003.07
Subject:
Physics, Theoretical, Computational, and Statistical Physics

The quasiclassical scheme is generalized for layered superconductors. The Ginzburg–Landau theory for layered superconductors known as the Lawrence–Doniach model and the expression for supercurrent ... More


Unstable Vacua In Quantum Field Theory

JEAN ZINN-JUSTIN

in Quantum Field Theory and Critical Phenomena

Published in print:
2002
Published Online:
January 2010
ISBN:
9780198509233
eISBN:
9780191708732
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198509233.003.0040
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter begins with a semi-classical study of barrier penetration in quantum field theory, generalizing the methods explained in quantum mechanics. It has been shown that in quantum mechanics ... More


The Rationality of Perception

Susanna Siegel

Published in print:
2017
Published Online:
February 2017
ISBN:
9780198797081
eISBN:
9780191844348
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198797081.001.0001
Subject:
Philosophy, Philosophy of Mind

One of the most important divisions in the human mind is between perception and reasoning. Perceptual experiences are conscious, but much of our reasoning is unconscious. We reason from information ... More


Relevant lengths

Richard A Klemm

in Layered Superconductors: Volume 1

Published in print:
2011
Published Online:
May 2012
ISBN:
9780199593316
eISBN:
9780191738128
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199593316.003.0005
Subject:
Physics, Condensed Matter Physics / Materials

The chapter, Relevant Lengths, describes the five phenomenological lengths important for layered superconductors. A fundamental length is the c-axis unit cell edge s, or the repeat distance normal to ... More


ICT Services Without Borders: An Opportunity for Egypt?

Omneia Helmy

in Toward More Efficient Services in Egypt: Reforming Tourism, Construction, Information Technology, Wholesale and Retail, Roads, and Banking Services

Published in print:
2011
Published Online:
May 2012
ISBN:
9789774164941
eISBN:
9781617971068
Item type:
chapter
Publisher:
American University in Cairo Press
DOI:
10.5743/cairo/9789774164941.003.0008
Subject:
Society and Culture, Middle Eastern Studies

This chapter presents the recent developments in the ICT sector and asserts that it could be an important driver of economic growth in Egypt's real GDP, employment, investment, international trade, ... More


Perceptual Learning: The Flexibility of the Senses

Kevin Connolly

Published in print:
2019
Published Online:
March 2019
ISBN:
9780190662899
eISBN:
9780190662929
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780190662899.001.0001
Subject:
Philosophy, Philosophy of Mind

Experts from wine tasters to radiologists to bird watchers have all undergone perceptual learning—that is, long-term changes in perception that result from practice or experience. Philosophers have ... More


Thirty-six Thousand Forms of Love: The Queering of Deleuze and Guattari

Verena Andermatt Conley

in Deleuze and Queer Theory

Published in print:
2005
Published Online:
March 2012
ISBN:
9780748634040
eISBN:
9780748652563
Item type:
chapter
Publisher:
Edinburgh University Press
DOI:
10.3366/edinburgh/9780748634040.003.0002
Subject:
Philosophy, General

This chapter analyses the queering of Gilles Deleuze and Felix Guattari. It explains that in the writings of Deleuze and Guattari, the question of homosexuality as queering, as becoming and as an ... More


The Problem of Hijacked Experience

Susanna Siegel

in The Rationality of Perception

Published in print:
2017
Published Online:
February 2017
ISBN:
9780198797081
eISBN:
9780191844348
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198797081.003.0001
Subject:
Philosophy, Philosophy of Mind

Jill suspects that Jack is angry at her. But she doesn’t know that her suspicion will affect the way Jack looks when she sees him. If Jill’s suspicion that Jack is angry makes him appear angry, does ... More


Epistemic Downgrade

Susanna Siegel

in The Rationality of Perception

Published in print:
2017
Published Online:
February 2017
ISBN:
9780198797081
eISBN:
9780191844348
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198797081.003.0004
Subject:
Philosophy, Philosophy of Mind

The examples used to motivate the Rationality of Perception pose the problem of hijacked experience. Part of the problem is that there is some pressure, on the face of it, to deny that these ... More


Periodic semi-classical vacuum, instantons and anomalies

Jean Zinn-Justin

in From Random Walks to Random Matrices

Published in print:
2019
Published Online:
August 2019
ISBN:
9780198787754
eISBN:
9780191829840
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198787754.003.0018
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Chapter 18 describes a few systems where the classical action has an infinite number of degenerate minima but, in the quantum theory, this degeneracy is lifted by barrier penetration effects. The ... More


Hyper-asymptotic expansions and instantons

Jean Zinn-Justin

in From Random Walks to Random Matrices

Published in print:
2019
Published Online:
August 2019
ISBN:
9780198787754
eISBN:
9780191829840
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198787754.003.0024
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Chapter 24 examines the topic of hyper–asymptotic expansions and instantons. A number of quantum mechanics and quantum field theory (QFT) examples exhibit degenerate classical minima connected by ... More


Functional integration: From path to field integrals

Jean Zinn-Justin

in From Random Walks to Random Matrices

Published in print:
2019
Published Online:
August 2019
ISBN:
9780198787754
eISBN:
9780191829840
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198787754.003.0002
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Chapter 2 is rather descriptive and introduces the notion of functional (path and field) integrals, for boson (the holomorphic formalism) as well as fermion systems (this necessitates the ... More


Philby's Letter to Peter Loxley, September 1944, with the Curry Memorandum on Soviet Espionage

Nige West and Oleg Tsarev

in TRIPLEX: Secrets from the Cambridge Spies

Published in print:
2009
Published Online:
October 2013
ISBN:
9780300123470
eISBN:
9780300156416
Item type:
chapter
Publisher:
Yale University Press
DOI:
10.12987/yale/9780300123470.003.0034
Subject:
History, British and Irish Modern History

This chapter discusses Philby's letter to Peter Loxley, September 1944, with a Curry memorandum on Soviet espionage. Philby tells Loxley that six months previously, C [chief of SIS] approved the ... More


Introductory

Michael Jacovides

in Locke's Image of the World

Published in print:
2017
Published Online:
February 2017
ISBN:
9780198789864
eISBN:
9780191831515
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198789864.003.0001
Subject:
Philosophy, History of Philosophy, Metaphysics/Epistemology

This chapter introduces the two projects of the book. First, I promise to interpret Locke’s philosophy in light of its scientific background. In particular, I want to give a complete account of his ... More


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