Bounds on graviton mass using weak lensing and SZ effect in galaxy clusters
In General Relativity (GR), the graviton is massless. However, a common feature in several theoretical alternatives of GR is a non-zero mass for the graviton. These theories can be described as massive gravity theories. Despite many theoretical complexities in these theories, on phenomenological gro...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-06-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269318302727 |
| _version_ | 1811276337595285504 |
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| author | Akshay Rana Deepak Jain Shobhit Mahajan Amitabha Mukherjee |
| author_facet | Akshay Rana Deepak Jain Shobhit Mahajan Amitabha Mukherjee |
| author_sort | Akshay Rana |
| collection | DOAJ |
| description | In General Relativity (GR), the graviton is massless. However, a common feature in several theoretical alternatives of GR is a non-zero mass for the graviton. These theories can be described as massive gravity theories. Despite many theoretical complexities in these theories, on phenomenological grounds the implications of massive gravity have been widely used to put bounds on graviton mass. One of the generic implications of giving a mass to the graviton is that the gravitational potential will follow a Yukawa-like fall off. We use this feature of massive gravity theories to probe the mass of graviton by using the largest gravitationally bound objects, namely galaxy clusters. In this work, we use the mass estimates of galaxy clusters measured at various cosmologically defined radial distances measured via weak lensing (WL) and Sunyaev–Zel'dovich (SZ) effect. We also use the model independent values of Hubble parameter H(z) smoothed by a non-parametric method, Gaussian process. Within 1σ confidence region, we obtain the mass of graviton mg<5.9×10−30 eV with the corresponding Compton length scale λg>6.82 Mpc from weak lensing and mg<8.31×10−30 eV with λg>5.012 Mpc from SZ effect. This analysis improves the upper bound on graviton mass obtained earlier from galaxy clusters. |
| first_indexed | 2024-04-12T23:54:50Z |
| format | Article |
| id | doaj.art-733637d23e0d46d5bcfacbc195107dae |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-12T23:54:50Z |
| publishDate | 2018-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-733637d23e0d46d5bcfacbc195107dae2022-12-22T03:11:32ZengElsevierPhysics Letters B0370-26932018-06-01781220226Bounds on graviton mass using weak lensing and SZ effect in galaxy clustersAkshay Rana0Deepak Jain1Shobhit Mahajan2Amitabha Mukherjee3Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India; Corresponding author.Deen Dayal Upadhyaya College, University of Delhi, Sector-3, Dwarka, New Delhi 110078, IndiaDepartment of Physics and Astrophysics, University of Delhi, Delhi 110007, IndiaDepartment of Physics and Astrophysics, University of Delhi, Delhi 110007, IndiaIn General Relativity (GR), the graviton is massless. However, a common feature in several theoretical alternatives of GR is a non-zero mass for the graviton. These theories can be described as massive gravity theories. Despite many theoretical complexities in these theories, on phenomenological grounds the implications of massive gravity have been widely used to put bounds on graviton mass. One of the generic implications of giving a mass to the graviton is that the gravitational potential will follow a Yukawa-like fall off. We use this feature of massive gravity theories to probe the mass of graviton by using the largest gravitationally bound objects, namely galaxy clusters. In this work, we use the mass estimates of galaxy clusters measured at various cosmologically defined radial distances measured via weak lensing (WL) and Sunyaev–Zel'dovich (SZ) effect. We also use the model independent values of Hubble parameter H(z) smoothed by a non-parametric method, Gaussian process. Within 1σ confidence region, we obtain the mass of graviton mg<5.9×10−30 eV with the corresponding Compton length scale λg>6.82 Mpc from weak lensing and mg<8.31×10−30 eV with λg>5.012 Mpc from SZ effect. This analysis improves the upper bound on graviton mass obtained earlier from galaxy clusters.http://www.sciencedirect.com/science/article/pii/S0370269318302727 |
| spellingShingle | Akshay Rana Deepak Jain Shobhit Mahajan Amitabha Mukherjee Bounds on graviton mass using weak lensing and SZ effect in galaxy clusters Physics Letters B |
| title | Bounds on graviton mass using weak lensing and SZ effect in galaxy clusters |
| title_full | Bounds on graviton mass using weak lensing and SZ effect in galaxy clusters |
| title_fullStr | Bounds on graviton mass using weak lensing and SZ effect in galaxy clusters |
| title_full_unstemmed | Bounds on graviton mass using weak lensing and SZ effect in galaxy clusters |
| title_short | Bounds on graviton mass using weak lensing and SZ effect in galaxy clusters |
| title_sort | bounds on graviton mass using weak lensing and sz effect in galaxy clusters |
| url | http://www.sciencedirect.com/science/article/pii/S0370269318302727 |
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