Dirac's contour representation in thermofield dynamics

A Vourdas; RF Bishop

doi:10.1103/PhysRevA.53.R1205

Dirac's contour representation in thermofield dynamics

A Vourdas, RF Bishop

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Abstract

The Dirac contour representation and its properties are studied. It provides an elegant formalism for an extension of the harmonic-oscillator Hilbert space into a larger space that is suitable for the description of oscillator systems at both positive and negative temperatures. The analytic continuation of various physical quantities into the negative temperature region is examined in detail, and several interesting connections are revealed.

Original language	English
Pages (from-to)	R1205-R1208
Number of pages	4
Journal	Physical Review A (Atomic, Molecular and Optical Physics)
Volume	53
DOIs	https://doi.org/10.1103/PhysRevA.53.R1205
Publication status	Published - 1996

Keywords

INDEPENDENT-CLUSTER PARAMETRIZATIONS; MODEL FIELD-THEORIES; WAVE-FUNCTIONS; STATES

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10.1103/PhysRevA.53.R1205

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title = "Dirac's contour representation in thermofield dynamics",

abstract = "The Dirac contour representation and its properties are studied. It provides an elegant formalism for an extension of the harmonic-oscillator Hilbert space into a larger space that is suitable for the description of oscillator systems at both positive and negative temperatures. The analytic continuation of various physical quantities into the negative temperature region is examined in detail, and several interesting connections are revealed.",

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AU - Bishop, RF

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AB - The Dirac contour representation and its properties are studied. It provides an elegant formalism for an extension of the harmonic-oscillator Hilbert space into a larger space that is suitable for the description of oscillator systems at both positive and negative temperatures. The analytic continuation of various physical quantities into the negative temperature region is examined in detail, and several interesting connections are revealed.

KW - INDEPENDENT-CLUSTER PARAMETRIZATIONS; MODEL FIELD-THEORIES; WAVE-FUNCTIONS; STATES

U2 - 10.1103/PhysRevA.53.R1205

DO - 10.1103/PhysRevA.53.R1205

M3 - Article

SN - 1050-2947

VL - 53

SP - R1205-R1208

JO - Physical Review A (Atomic, Molecular and Optical Physics)

JF - Physical Review A (Atomic, Molecular and Optical Physics)

ER -

Dirac's contour representation in thermofield dynamics

Abstract

Keywords

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