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순수물리이론 연구단
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Gauge independence of induced gravitational waves

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Title
Gauge independence of induced gravitational waves
Author(s)
Keisuke Inomata; Takahiro Terada
Publication Date
2020-01
Journal
PHYSICAL REVIEW D, v.101, no.2, pp.023523 -
Publisher
AMER PHYSICAL SOC
Abstract
We study gauge (in)dependence of the gravitational waves (GWs) induced from curvature perturbations. For the GWs produced in a radiation-dominated era, we find that the observable (late-time) GWs in the transverse-traceless (synchronous) gauge and in the Newtonian gauge arc the same in contrast to a claim in the literature. We also mention the interpretation of the gauge dependence of the tensor perturbations which appears in the context of the induced GWs. © 2020 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/7022
ISSN
2470-0010
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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