Zobrazeno 1 - 4
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pro vyhledávání: '"Priyesh Chakraborty"'
Autor:
Priyesh Chakraborty, John Stout
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-48 (2024)
Abstract We study the dynamics of scalar fields with compact field spaces, or axions, in de Sitter space. We argue that the field space topology can qualitatively affect the physics of these fields beyond just which terms are allowed in their actions
Externí odkaz:
https://doaj.org/article/4fdf85c0a33f474a8fe4b3b2f375d9fd
Autor:
Priyesh Chakraborty, John Stout
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-47 (2024)
Abstract We study the self-energies of weakly interacting scalar fields in de Sitter space with one field much lighter than the Hubble scale. We argue that self-energies drastically simplify in this light limit. We illustrate this in theories with tw
Externí odkaz:
https://doaj.org/article/2ca8c24f610642269f8685f9978ffed3
Autor:
Priyesh Chakraborty, Anthony R. Pullen
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 488:1828-1845
Weak gravitational lensing of the 21 cm radiation is expected to be an important cosmological probe for post-reionization physics. We investigate the reconstruction of the matter density perturbations using a quadratic minimum variance estimator. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04dd9adfd758ecdf7a0650bb94a2f182
https://doi.org/10.1093/mnras/stz1781
https://doi.org/10.1093/mnras/stz1781
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2022:038
Upcoming cosmic microwave background (CMB) lensing measurements and tomographic galaxy surveys are expected to provide us with high-precision data sets in the coming years, thus paving the way for fruitful cross-correlation analyses. In this paper we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::596c0d4e7e7f86809c5fbe4b53e94a07
https://doi.org/10.1088/1475-7516/2022/07/038
https://doi.org/10.1088/1475-7516/2022/07/038