Junction conditions in gravity theories with extra scalar degrees of freedom

Rosa, João Luís

doi:10.1103/physrevd.109.064018

Phys. Rev. D

2024

DOI: 10.1103/physrevd.109.064018

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Junction conditions in gravity theories with extra scalar degrees of freedom

João Luís Rosa

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2024

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Cited by 3 publications

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Junction conditions for local rotationally symmetric spacetimes in the 1+1+2 covariant formalism

Rosa,

Carloni

2024

Phys. Rev. D

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Junction conditions for local rotationally symmetric spacetimes in the 1+1+2 covariant formalism

Rosa,

Carloni

2024

Phys. Rev. D

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Multiway junction conditions: Booklets and webs

Shen,

Peng,

2024

Phys. Rev. D

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Junction conditions play a crucial role in constructing new gravity solutions. In this paper, we derive the junction condition for gluing together an arbitrary number of spacetimes along a common interface. We develop a geometric technique of reverse extension and provide precise definitions of geometric quantities at the interface. This leads to a geometric derivation of the multiway junction condition. As a cross-check, we independently rederive the junction condition by varying the action of some specific gravitational models including both Einstein gravity and dilaton gravity. We demonstrate that the junction condition is invariant under a change of frames, and the form of the junction condition is the same for both space- and timelike interfaces. Published by the American Physical Society 2024

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Neutron stars in Aether scalar-tensor theory

Reyes,

Sakstein

2024

Phys. Rev. D

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Junction conditions in gravity theories with extra scalar degrees of freedom

Cited by 3 publications

References 78 publications

Junction conditions for local rotationally symmetric spacetimes in the 1+1+2 covariant formalism

Junction conditions for local rotationally symmetric spacetimes in the 1+1+2 covariant formalism

Multiway junction conditions: Booklets and webs

Neutron stars in Aether scalar-tensor theory

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