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Research PapersNo Access

SECOND-ORDER CORRECTIONS TO QED COUPLING AT LOW TEMPERATURE

SAMINA S. MASOOD

Department of Physics, University of Houston Clear Lake, Houston TX 77058, USA

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and

Physics Department, COMSATS Institute of Information Technology, Islamabad, Pakistan

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https://doi.org/10.1142/S0217751X08041712Cited by:5 (Source: Crossref)

Abstract

We calculate the second-order corrections to vacuum polarization tensor of photons at low temperatures, i.e. T ≪ 10¹⁰K(T ≪ m_e). The thermal contributions to the QED coupling constant are evaluated at temperatures below the electron mass that is T < m_e. Renormalization of QED at these temperatures has explicitly been checked. The electromagnetic properties of such a thermal medium are modified. Parameters like electric permittivity and magnetic permeability of such a medium are no more constant and become functions of temperature.

Keywords:

PACS: 11.10 Gh, 11.10.hi, 13.40 Ks, 05.10 Cc, 12.20.-m

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Vol. 23, No. 29

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History

Received 23 November 2007

Revised 26 May 2008

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