Conserved laws and dynamical structure of axions coupled to photons

Rodríguez-Tzompantzi, Omar

doi:10.48550/arxiv.2001.07101

Cited by 2 publications

(2 citation statements)

References 33 publications

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“…In a more contemporary context, in axion electrodynamics, where the Maxwell Lagrangian is augmented by a pseudo-scalar field coupled to the Pontryagin term for U (1), the corresponding junction conditions can also be derived in this way[8].…”

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confidence: 99%

Thin shell dynamics in Lovelock gravity

Guilleminot¹,

Merino²,

Olea³

2022

Preprint

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We study matching conditions for a spherically symmetric thin shell in Lovelock gravity which can be read off from the variation of the corresponding firstorder action. In point of fact, the addition of Myers boundary terms to the gravitational action eliminates the dependence on the acceleration in this functional and such that the canonical momentum appears in the surface term in the variation of the total action. This procedure leads to junction conditions given by the discontinuity of the canonical momentum defined for an evolution normal to the boundary. In particular, we correct existing results in the literature for the thin shell collapse in generic Lovelock theories, which were mistakenly drawn from an inaccurate analysis of the total derivative terms in the system.

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mentioning

confidence: 99%

Thin shell dynamics in Lovelock gravity

Guilleminot¹,

Merino²,

Olea³

2022

Preprint

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 99%

Thin shell dynamics in Lovelock gravity

2022

View full text Add to dashboard Cite

We study matching conditions for a spherically symmetric thin shell in Lovelock gravity which can be read off from the variation of the corresponding first-order action. In point of fact, the addition of Myers’ boundary terms to the gravitational action eliminates the dependence on the acceleration in this functional and such that the canonical momentum appears in the surface term in the variation of the total action. This procedure leads to junction conditions given by the discontinuity of the canonical momentum defined for an evolution normal to the boundary.In particular, we correct existing results in the literature for the thin shell collapse in generic Lovelock theories, which were mistakenly drawn from an inaccurate analysis of the total derivative terms in the system.

show abstract

Conserved laws and dynamical structure of axions coupled to photons

Cited by 2 publications

References 33 publications

Thin shell dynamics in Lovelock gravity

Thin shell dynamics in Lovelock gravity

Thin shell dynamics in Lovelock gravity

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