Inverse Landau-Khalatnikov transformation and infrared critical exponents of (2+1)-dimensional quantum electrodynamics - INSPIRE

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Inverse Landau-Khalatnikov transformation and infrared critical exponents of (2+1)-dimensional quantum electrodynamics

Jan, 1997

13 pages

Published in:

Phys.Lett.B 402 (1997) 154-158

e-Print:

hep-th/9701087 [hep-th]

DOI:

10.1016/S0370-2693(97)00447-4

Report number:

OUTP-96-76-P

View in:

ADS Abstract Service

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Abstract:

By applying an inverse Landau-Khalatnikov transformation, connecting (resummed) Schwinger-Dyson treatments in non-local and Landau gauges of

QED_3

, we derive the infrared behaviour of the wave-function renormalization in the Landau gauge, and the associated critical exponents in the normal phase of the theory (no mass generation). The result agrees with the one conjectured in earlier treatments. The analysis involves an approximation, namely an expansion of the non-local gauge in powers of momenta in the infrared. This approximation is tested by reproducing the critical number of flavours necessary for dynamical mass generation in the chiral-symmetry-broken phase of

QED_3

.

Note:

13 pages LATEX, 1 Figure (included automatically) Report-no: OUTP-96-76-P

quantum electrodynamics
dimension: 3
Dyson-Schwinger equation: solution
dependence: gauge
expansion 1/N
renormalization

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