# Width of photon decay in a magnetic field: Elementary semiclassical derivation and sensitivity to Lorentz violation

@article{Satunin2013WidthOP, title={Width of photon decay in a magnetic field: Elementary semiclassical derivation and sensitivity to Lorentz violation}, author={Petr Satunin}, journal={Physical Review D}, year={2013}, volume={87}, pages={105015} }

We present an elementary derivation of the width of photon decay in a weak magnetic field using the semiclassical method of worldline instantons. The calculation is generalized to a model of quantum electrodynamics with broken Lorentz symmetry. Implications for the search of deviations from Lorentz invariance in the cosmic ray experiments are discussed.

## 11 Citations

### Study of neutrino decay in a magnetic field within the “worldline instanton” approach

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The decay of a heavy neutral scalar particle into fermions and into charged scalars are analyzed when in the presence of an external magnetic field and finite temperature. Working in the one-loop…

### Semiclassical analysis of pair creation in de Sitter space

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We study a massive scalar field theory in de Sitter space. Using a worldline instanton approach, we calculate the pair creation probability in the weak-field limit. In addition to the exponential…

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### Effect of a primordial magnetic field on the inflaton decay process in a warm inflation scenario

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Magnetic fields appear everywhere in the Universe. Their widespread presence at high redshifts and very large scales suggests that their origin could be primordial. In particular, their presence…

### Worldline instantons for nonlinear Breit-Wheeler pair production and Compton scattering

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Worldline instantons have previously been used to study the probability of Schwinger pair production (both the exponential and pre-exponential parts) and photon-stimulated pair production (the…

### Impact of Lorentz violation on anomalous magnetic moments of charged leptons

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- 2022

We address the question whether a violation of Lorentz symmetry can explain the tension between the measurement and the Standard-Model prediction of the anomalous magnetic moment of the muon, (g −…

### Breit-Wheeler pair production from Worldline Instantons

- Physics
- 2018

We calculate the cross-section of Breit-Wheeler process γγ → e+ e- in external electric field below the perturbative threshold by the semiclassical method of worldline instantons.

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