We point out that the initial-value (Cauchy) problem for self-interacting vector fields presents the same well-posedness issues as for first-order derivative self-interacting scalar fields (often referred to as k-essence). For the latter, suitable strategies have been employed in the last few years to successfully evolve the Cauchy problem at the level of the infrared theory, without the need for an explicit ultraviolet completion. We argue that the very same techniques can also be applied to self-interacting vector fields, avoiding a number of issues and “pathologies” recently found in the literature.

The well-posedness of the Cauchy problem for self-interacting vector fields / Barausse, Enrico; Bezares, Miguel; Crisostomi, Marco; Lara, Guillermo. - In: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. - ISSN 1475-7516. - 2022:11(2022), pp. 1-4. [10.1088/1475-7516/2022/11/050]

The well-posedness of the Cauchy problem for self-interacting vector fields

Barausse, Enrico;Bezares, Miguel;Crisostomi, Marco;Lara, Guillermo
2022-01-01

Abstract

We point out that the initial-value (Cauchy) problem for self-interacting vector fields presents the same well-posedness issues as for first-order derivative self-interacting scalar fields (often referred to as k-essence). For the latter, suitable strategies have been employed in the last few years to successfully evolve the Cauchy problem at the level of the infrared theory, without the need for an explicit ultraviolet completion. We argue that the very same techniques can also be applied to self-interacting vector fields, avoiding a number of issues and “pathologies” recently found in the literature.
2022
11
1
4
050
10.1088/1475-7516/2022/11/050
https://arxiv.org/abs/2207.00443
Barausse, Enrico; Bezares, Miguel; Crisostomi, Marco; Lara, Guillermo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/130210
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