Massive gravitons in arbitrary spacetimes
We present two different versions of the consistent theory of massive gravitons in arbitrary spacetimes which are simple enough for practical applications. The theory is described by a nonsymmetric rank-2 tensor whose equations of motion imply six algebraic and five differential constraints, reducin...
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| Veröffentlicht in: | Physical review. D 2017-12, Vol.96 (12), Article 124023 |
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| container_title | Physical review. D |
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| creator | Mazuet, Charles Volkov, Mikhail S. |
| description | We present two different versions of the consistent theory of massive gravitons in arbitrary spacetimes which are simple enough for practical applications. The theory is described by a nonsymmetric rank-2 tensor whose equations of motion imply six algebraic and five differential constraints, reducing the number of independent components to five. The theory reproduces the standard description of massive gravitons in Einstein spaces. In generic spacetimes it does not show the massless limit and always propagates five degrees of freedom, even for the vanishing mass parameter. We illustrate these features by an explicit calculation for a homogeneous and isotropic cosmological background. We find that the gravitons are stable if they are sufficiently massive, hence they may be a part of dark matter at present. We also discuss other possible applications. |
| doi_str_mv | 10.1103/PhysRevD.96.124023 |
| format | Article |
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D</title><description>We present two different versions of the consistent theory of massive gravitons in arbitrary spacetimes which are simple enough for practical applications. The theory is described by a nonsymmetric rank-2 tensor whose equations of motion imply six algebraic and five differential constraints, reducing the number of independent components to five. The theory reproduces the standard description of massive gravitons in Einstein spaces. In generic spacetimes it does not show the massless limit and always propagates five degrees of freedom, even for the vanishing mass parameter. We illustrate these features by an explicit calculation for a homogeneous and isotropic cosmological background. We find that the gravitons are stable if they are sufficiently massive, hence they may be a part of dark matter at present. 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D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mazuet, Charles</au><au>Volkov, Mikhail S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Massive gravitons in arbitrary spacetimes</atitle><jtitle>Physical review. D</jtitle><date>2017-12-15</date><risdate>2017</risdate><volume>96</volume><issue>12</issue><artnum>124023</artnum><issn>2470-0010</issn><eissn>2470-0029</eissn><abstract>We present two different versions of the consistent theory of massive gravitons in arbitrary spacetimes which are simple enough for practical applications. The theory is described by a nonsymmetric rank-2 tensor whose equations of motion imply six algebraic and five differential constraints, reducing the number of independent components to five. The theory reproduces the standard description of massive gravitons in Einstein spaces. In generic spacetimes it does not show the massless limit and always propagates five degrees of freedom, even for the vanishing mass parameter. We illustrate these features by an explicit calculation for a homogeneous and isotropic cosmological background. We find that the gravitons are stable if they are sufficiently massive, hence they may be a part of dark matter at present. We also discuss other possible applications.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevD.96.124023</doi></addata></record> |
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| ispartof | Physical review. D, 2017-12, Vol.96 (12), Article 124023 |
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| subjects | Dark matter Differential equations Equations of motion General Relativity and Quantum Cosmology Gravitons High Energy Physics - Theory Mathematical analysis Physics Spacetime Tensors |
| title | Massive gravitons in arbitrary spacetimes |
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