Cancellation of infrared divergences to all orders in light front QED - INSPIRE

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Cancellation of infrared divergences to all orders in light front QED

Jai D. More
(
- Mumbai U.
)
,
Anuradha Misra
(
- Mumbai U.
)

Feb 20, 2014

8 pages

Published in:

Phys.Rev.D 89 (2014) 10, 105021

Published: May 22, 2014

e-Print:

1402.4924 [hep-th]

DOI:

10.1103/PhysRevD.89.105021

View in:

ADS Abstract Service

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Abstract: (APS)

We present an all-order proof of the cancellation of infrared (IR) divergences in light-front quantum electrodynamics using a coherent state approach. It is shown, using fermion mass renormalization as an example, that the true IR divergences are eliminated to all orders in a light-front time-ordered perturbative calculation if one uses a coherent state basis instead of the usual Fock basis to calculate the Hamiltonian matrix elements.

Note:

15 pages, 7 figures

11.10.Ef
12.20.Ds
12.38.Bx
field theory: light front
mass: renormalization
fermion: mass
infrared problem
coherent state
perturbation theory

References(19)

Figures(7)

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