Free energy and effective mass of the polaron at finite temperatures

D. P.L. Castrigiano; N. Kokiantonis; H. Stierstorfer

doi:10.1016/0375-9601(84)90818-1

Free energy and effective mass of the polaron at finite temperatures

D. P.L. Castrigiano
, N. Kokiantonis
, H. Stierstorfer

Chair of Global Analysis

Ludwig-Maximilians-Universität München
Max Planck Institute for Plasma Physics

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Explicit expressions depending on two variational parameters are derived for the free energy and the effective mass of the Fröhlich polaron at finite temperatures. The variation is carried out with Feynman's trial action and an arbitrary external electric force. All path integrals occurring in that connection are evaluated exactly. Asymptotic expressions in the weak and strong coupling case as well as diagrams for the main formulae are given.

Original language	English
Pages (from-to)	364-369
Number of pages	6
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	104
Issue number	6-7
DOIs	https://doi.org/10.1016/0375-9601(84)90818-1
State	Published - 10 Sep 1984

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title = "Free energy and effective mass of the polaron at finite temperatures",

abstract = "Explicit expressions depending on two variational parameters are derived for the free energy and the effective mass of the Fr{\"o}hlich polaron at finite temperatures. The variation is carried out with Feynman's trial action and an arbitrary external electric force. All path integrals occurring in that connection are evaluated exactly. Asymptotic expressions in the weak and strong coupling case as well as diagrams for the main formulae are given.",

author = "Castrigiano, \{D. P.L.\} and N. Kokiantonis and H. Stierstorfer",

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T1 - Free energy and effective mass of the polaron at finite temperatures

AU - Castrigiano, D. P.L.

AU - Kokiantonis, N.

AU - Stierstorfer, H.

PY - 1984/9/10

Y1 - 1984/9/10

N2 - Explicit expressions depending on two variational parameters are derived for the free energy and the effective mass of the Fröhlich polaron at finite temperatures. The variation is carried out with Feynman's trial action and an arbitrary external electric force. All path integrals occurring in that connection are evaluated exactly. Asymptotic expressions in the weak and strong coupling case as well as diagrams for the main formulae are given.

AB - Explicit expressions depending on two variational parameters are derived for the free energy and the effective mass of the Fröhlich polaron at finite temperatures. The variation is carried out with Feynman's trial action and an arbitrary external electric force. All path integrals occurring in that connection are evaluated exactly. Asymptotic expressions in the weak and strong coupling case as well as diagrams for the main formulae are given.

UR - https://www.scopus.com/pages/publications/33744592411

U2 - 10.1016/0375-9601(84)90818-1

DO - 10.1016/0375-9601(84)90818-1

M3 - Article

AN - SCOPUS:33744592411

SN - 0375-9601

VL - 104

SP - 364

EP - 369

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 6-7

ER -

Free energy and effective mass of the polaron at finite temperatures

Abstract

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